{"title":"Whatman","description":"","products":[{"product_id":"grade-4-qualitative-filter-paper-standard-grade-circle-4-7cm","title":"Whatman™ Grade 4 Qualitative Filter Paper, Standard Whatman™ Grade, circle, 4.7cm","description":"\u003cp\u003eWhatman Grade  4 Qualitative Filter Papers\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 4 Qualitative Filter Papers are standard grade high flow rate cellulose filter papers for fast filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nOverview\u003cbr\u003e\r\nWhatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003cbr\u003e\r\n\u003cbr\u003e\r\nExtremely high flow rate:\u003cbr\u003e\r\n•Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003cbr\u003e\r\n•Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\n**IMAGE is a sample only**\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53657892454691,"sku":"WHAT1004-047","price":12.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1004.jpg?v=1782860457"},{"product_id":"grade-1-qualitative-filter-paper-standard-grade-circle-4-7cm","title":"Whatman™ Grade 1 Qualitative Filter Paper, Standard Whatman™ Grade, circle, 4.7cm","description":"\u003cp\u003eWhatman™ Grade 1 Qualitative Filter Papers\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 1 Qualitative Filter Papers are the most widely used standard grade medium flow rate cellulose filter papers.\u003cbr\u003e\r\n\u003cbr\u003e\r\nOverview\u003cbr\u003e\r\nWhatman Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate\u003cbr\u003e\r\n•Agricultural soil analysis and seed testing procedures\u003cbr\u003e\r\n•Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid\u003cbr\u003e\r\n•Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity\u003cbr\u003e\r\n•Gas detection by quantitative chromogenesis with optical reflectance\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53657894748451,"sku":"WHAT1001-047","price":13.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1001-047.jpg?v=1783465834"},{"product_id":"whatman-grade-3236-seed-test-paper-grey-pleated-strips-50-double-pleats-110-20-mm","title":"Whatman™ Grade 3236 seed test paper, grey pleated Strips, 50 double pleats 110 × 20mm","description":"\u003cp\u003eWhatman Grade 3236 seed test paper, grey pleated strips, 50 double pleats 110 × 20 mm, 500\/PK\u003cbr\u003e\r\n\u003cbr\u003e\r\nOverview\u003cbr\u003e\r\nGrade 3236 pleated strips for seed testing.\u003cbr\u003e\r\nOwing to their extremely high purity our seed testing papers provide reliable and reproducible results. The papers are made from pure cellulose without any additives and do not contain any substances that could influence the growth of the seeds. The constant water absorption of the papers ensures the continuous provision of the required amount of water.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe better contrast of the color seed testing papers makes evaluation easier, particularly for seeds with fine white rootlets or under artificial light. This makes work easier, improves the results, and saves time. The dyes that we use have been thoroughly investigated and have no influence on the growth of the seeds.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53657906741539,"sku":"WHAT10345573","price":846.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10345573.png?v=1781227934"},{"product_id":"polydisc-gw-filter-50-mm-nylon-with-quartz-fiber-prefilter-0-45-µm-bulk-pack","title":"Polydisc GW Filter 50mm, nylon with quartz fiber prefilter, 0.45 µm (Bulk Pack)","description":"\u003cp\u003eWhatman™ Polydisc In-Line Filters, Ground Water\u003cbr\u003e\r\nWhatman Polydisc GW (Ground Water) in-line filter is specifically designed for preparation of ground water samples for dissolved metals analysis.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53657908773155,"sku":"WHAT10463402","price":1248.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10463402.png?v=1782860462"},{"product_id":"grade-226-qualitative-filter-paper-creped-grey-20cm","title":"Whatman™ Grade 226 Qualitative Filter Paper, creped, grey, 20cm","description":"\u003cp\u003eWhatman® filter paper, Grade 226, creped, grey\u003cbr\u003e\r\ncircles, diam. 200 mm (7.9 in.), pkg of 100 ea\u003cbr\u003e\r\n\u003cbr\u003e\r\nGeneral description\u003cbr\u003e\r\nFilter papers are manufactured primarily for non-critical industrial laboratory filtration applications requiring inexpensive filters of consistent performance.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade 226 is a unique filter paper with a creped, grey surface providing optical contrast for white or dark filtrates. Retains coarse or gelatinous precipitates. Filtration speed is high. Grade 226 is used extensively in sugar laboratories for routine and\/or repetitive filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nNote; These papers should not be used for kjeldahl nitrogen analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFeatures and Benefits\u003cbr\u003e\r\n•High filtration speed\u003cbr\u003e\r\n•Retains coarse or gelatinous particulates\u003cbr\u003e\r\n•Unique crêped gray surface provides optical contrast for white or dark filtrates\u003cbr\u003e\r\n\u003cbr\u003e\r\nLegal Information\u003cbr\u003e\r\nWhatman is a registered trademark of Cytiva\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53657911132451,"sku":"WHAT5226-200","price":41.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/5226-200.jpg?v=1787625013"},{"product_id":"high-purity-glass-soxhlet-extraction-thimble-43-123-mm","title":"High Purity Glass Soxhlet Extraction Thimble, 43 × 123mm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva's Whatman 100% borosilicate glass microfiber (HP-GF) thimbles are designed to fit most Soxhlet extraction units. They are well-suited to pollution monitoring when analysis of hot and acidic gases is required.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Resistant to temperatures up to 500°C\u003cbr\u003e\r\n•Binder-free, no chemical additives\u003cbr\u003e\r\n•Nominal particle retention rating: 0.8 µm\u003cbr\u003e\r\n•Effective when used with solvents incompatible with cellulose materials\u003cbr\u003e\r\n\u003cbr\u003e\r\nExtraction thimbles in glass, quartz, or cellulose are also available - Ask us for more information\u003cbr\u003e\r\n\u003cbr\u003e\r\nGlass Soxhlet extraction thimble applications\u003cbr\u003e\r\n•Analysis of hot and acidic gases during emission control and smoke stack gas monitoring\u003cbr\u003e\r\n•Analysis of pesticide residues using Soxhlet extraction\u003cbr\u003e\r\n•Determination of oil\/fat content of foods\u003cbr\u003e\r\n•Analysis of oil and grease in solid wastes\u003cbr\u003e\r\n\u003cbr\u003e\r\nHigh-purity glass Soxhlet thimble sizes\u003cbr\u003e\r\nWhatman brand high-purity glass thimbles are available in a range of sizes and wall thicknesses for optimal use in a variety of air sampling and Soxhlet extraction units. Thimbles come in packs of 25 pieces, with four internal diameter sizes:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•90 mm\u003cbr\u003e\r\n•90 mm tapered\u003cbr\u003e\r\n•100 mm\u003cbr\u003e\r\n123 mm\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014739747,"sku":"WHAT2814-432","price":366.7,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2814-432.jpg?v=1788490824"},{"product_id":"grade-gf-f-filter-for-tclp-test-use-4-7cm-circle","title":"Whatman™ Grade GF\/F Filter for TCLP Test Use, 4.7cm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Grade GF\/F binder-free borosilicate glass microfiber fiber is commonly used for biomolecule purification techniques such as DNA purification and protein precipitation as well as landfill leachate toxicity testing.\u003cbr\u003e\r\n\u003cbr\u003e\r\nStringent particle retention size for biochemical filtering\u003cbr\u003e\r\nApplications include:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•DNA purification and binding\u003cbr\u003e\r\n•Filtration for protein purification\u003cbr\u003e\r\n•Clarifying difficult biochemical solutions and fluids\u003cbr\u003e\r\n•Landfill leachate toxicity testing\u003cbr\u003e\r\n\u003cbr\u003e\r\nDue to its stringent particle retention size specification and pure borosilicate glass composition, the Whatman Grade GF\/F glass microfiber filter was chosen by the US Environmental Protection Agency (EPA) for use in developing the Toxicity Characteristic Leaching Procedure (TCLP) 1311. It remains a prominent component for measuring landfill leachate composition\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Stringent 0.6-0.8 µm particle retention specification\u003cbr\u003e\r\n•Manufactured from pure borosilicate glass\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade GF\/F binder-free glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThis pure borosilicate glass fiber filter offers very fine particle retention with high loading capacity and flow rate.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFind the right particle retention rating and thickness for your analysis in the Whatman glass microfiber binder-free range.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014772515,"sku":"WHAT1825-047","price":147.1,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1825_bdd0cb31-e401-4cd1-abed-a0791a5478c4.jpg?v=1788490215"},{"product_id":"benchkote-surface-protector-460-mm-50-m-reel","title":"Benchkote Surface Protector, 460mm × 50 m Reel ","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Benchkote surface protector is an absorbent lab paper that protects surfaces against hazardous spills. After use, the bench protector sheet is incinerated or disposed of according to local regulations. \u003cbr\u003e\r\n\u003cbr\u003e\r\n•Strong: Benchkote surface protector is strong and tear resistant when wet or dry\u003cbr\u003e\r\n•Ease-of-use: Smooth white surface can be written on with ink or pencil and lies flat\u003cbr\u003e\r\n•Clean: Suitable for saturation with disinfectant to protect benches where pathogens and other bacteria are present\u003cbr\u003e\r\n•Disposable: Benchkote paper can be incinerated after use\u003cbr\u003e\r\n•Safe combustion: Polyethylene layer is rapidly consumed when incinerated and does not melt or drip\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014805283,"sku":"WHAT2300-731","price":200.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/3927_10061.jpg?v=1784614816"},{"product_id":"acid-alkali-universal-ph-indicator-blue-strip-book-20-strips-each-litmus","title":"Acid-Alkali Universal pH Indicator, Blue Strip Book, 20 Strips each, Litmus","description":"\u003cp\u003eBlue and red litmus paper and phenophthalein strips are mixed-indicator tests designed for fast, accurate, and reliable pH solution testing.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014838051,"sku":"WHAT2600-601","price":122.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2600-201A.jpg?v=1784072747"},{"product_id":"kjeldahl-analysis-weighing-paper-grade-b-2-4-4-in-b2-101-6x101-6mm","title":"Kjeldahl Analysis Weighing Paper, Grade B-2, 4 × 4 in (B2 101.6x101.6mm)","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nGrade B-2 Whatman weighing paper from Cytiva dissolves residue-free in acid solution, which is critical in applications such as Kjeldahl analysis of nitrogen in soil.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Thin (0.04 mm) and lightweight (43 g\/m²)\u003cbr\u003e\r\n•Transparent and smooth parchment surface\u003cbr\u003e\r\n•Simple weighing out and sample transfer\u003cbr\u003e\r\n•Reliable for quantitative transfer\u003cbr\u003e\r\n•Range of sheet sizes for ease-of-use\u003cbr\u003e\r\n•Low nitrogen paper that is residue-free for accurate chemical analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva also offers weighing boats for Kjeldahl analysis.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014870819,"sku":"WHAT10347672","price":64.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10347672_b14d3b79-5c3e-4703-9637-e616865deb08.jpg?v=1785202813"},{"product_id":"grade-5-qualitative-filter-paper-standard-grade-circle-18-5cm","title":"Whatman™ Grade 5 Qualitative Filter Paper Standard Whatman™ Grade, circle, 18.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nA standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.\u003cbr\u003e\r\nThese cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade 5: 2.5 µm\u003cbr\u003e\r\nThe maximum degree of fine particle filtration in the qualitative range. Capable of retaining the fine precipitates encountered in chemical analysis. Slow flow rate. Excellent clarifying filter for cloudy suspensions and for water and soil analysis. Also available prepleated as Grade 5V.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660014969123,"sku":"WHAT1005-185","price":55.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1005-185.jpg?v=1788490218"},{"product_id":"kjeldahl-analysis-weighing-paper-grade-b-2-5-6-in-b2-152-4x152-4mm","title":"Kjeldahl Analysis Weighing Paper, Grade B-2, 5 × 6 in (B2 152.4x152.4mm)","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nGrade B-2 Whatman weighing paper from Cytiva dissolves residue-free in acid solution, which is critical in applications such as Kjeldahl analysis of nitrogen in soil.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Thin (0.04 mm) and lightweight (43 g\/m²)\u003cbr\u003e\r\n•Transparent and smooth parchment surface\u003cbr\u003e\r\n•Simple weighing out and sample transfer\u003cbr\u003e\r\n•Reliable for quantitative transfer\u003cbr\u003e\r\n•Range of sheet sizes for ease-of-use\u003cbr\u003e\r\n•Low nitrogen paper that is residue-free for accurate chemical analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva also offers weighing boats for Kjeldahl analysis.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015001891,"sku":"WHAT10347673","price":67.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10347673_5fdaf813-3132-49b7-9c8c-90ad57cc2ae4.png?v=1785202816"},{"product_id":"nuclepore-hydrophilic-membrane-0-2-µm-pore-size-47-mm-circle","title":"Nuclepore Hydrophilic Membrane, 0.2 µm pore size, 47mm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Nuclepore™ track-etched membrane filters offer a highly defined pore size cutoff in the sub-micron range, enabling particle deformity measurement and capture of extremely small particles. These membranes come in a range of pores sizes and diameters and are also available in sheet format. Whatman™ Nuclepore™ membranes are suitable for a wide range of sample types and applications, including bioassays, microscopy, cytology, parasitology, certain air and oceanography analyses, cell biology, cell culture and chemotaxis, and environment analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Track-etched for highly defined pore size and high pore density\u003cbr\u003e\r\n•Low protein binding and low extractables, minimizing filtration sample contamination risk\u003cbr\u003e\r\n•High chemical resistance and good thermal stability for a wide range of sample types\u003cbr\u003e\r\n•Low, consistent ash and low tare weights\u003cbr\u003e\r\n•Smooth flat membrane surface for high particle visibility\u003cbr\u003e\r\n\u003cbr\u003e\r\nNuclepore™ track-etched polycarbonate membranes are manufactured from high-quality polycarbonate film and have sharply defined pore sizes, high flow rates, and excellent chemical and thermal resistance. The membranes have a smooth flat surface and exhibit very low levels of extractables. The thin and uniform cylindrical pores also facilitate rapid cell migration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe hydrophilic membrane filters are manufactured from high-quality polycarbonate film track-etched membrane for high nominal pore size precision and are treated with polyvinylpyrrolidone (PVP).\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015034659,"sku":"WHAT10417012","price":286.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10417004.jpg?v=1785203415"},{"product_id":"grade-5-qualitative-filter-paper-standard-grade-circle-4-9cm","title":"Whatman™ Grade 5 Qualitative Filter Paper Standard Whatman™ Grade, circle, 9cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Acid-treated for high wet-strength\u003cbr\u003e\r\n•Extremely low ash content (0.006% ash maximum)\u003cbr\u003e\r\n•Nominal particle retention of 8 µm\u003cbr\u003e\r\n•Medium flow rate (Herzberg filtration speed 200 s)\u003cbr\u003e\r\n•High chemical resistance to strong acid and alkali suspensions\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva''s business offers hardened ashless filter paper for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGravimetric analysis of acid and alkali suspensions\u003cbr\u003e\r\nCytiva''s hardened, ashless Grade 540 lab filter paper is frequently used as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. The acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015067427,"sku":"WHAT1454-090","price":38.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1540-150.jpg?v=1785203418"},{"product_id":"grade-gf-b-filter-for-liquid-scintillation-2-5cm-circle","title":"Whatman™ Grade GF\/B Filter for Liquid Scintillation, 2.5cm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nA standard grade filter for boiler water analysis.\u003cbr\u003e\r\nThese cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003cbr\u003e\r\n\u003cbr\u003e\r\nTwice as fast as Grade 5 with similar fine particle retention. Often specified for boiler water analysis applications.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015100195,"sku":"WHAT1821-025","price":42.1,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1821.jpg?v=1788490221"},{"product_id":"grade-40-ashless-filter-paper-for-pollution-analysis-11cm","title":"Whatman™ Grade 40 Ashless Filter Paper for Pollution Analysis, 11cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade 40 high-purity filters from Cytiva are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•High-purity filters contain 0.007% maximum ash content\u003cbr\u003e\r\n•Medium nominal particle retention rating of 8 µm\u003cbr\u003e\r\n•Medium filtration speed (Herzberg 340 s)\u003cbr\u003e\r\n•Particularly useful for gravimetric analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\nApplications for high-purity Grade 40 filters\u003cbr\u003e\r\nHigh-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples. Cytiva''s high-purity Whatman™ Grade 40 ashless paper is suited to:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Soil analysis, when separating solid matter from aqueous extracts\u003cbr\u003e\r\n•Quantitative determination of milk sediment\u003cbr\u003e\r\n•Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry\u003cbr\u003e\r\n•Analysis of constituent components in cements, clays, iron, and steel products\u003cbr\u003e\r\n•Collection of trace elements and radionuclides from the atmosphere\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015362339,"sku":"WHAT1440-110","price":39.4,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1440-110_b2750aff-5c71-4df9-93aa-a0a845726b5d.jpg?v=1788490223"},{"product_id":"grade-541-ashless-fast-filter-paper-15cm","title":"Whatman™ Grade 541 Ashless Fast Filter Paper 15cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•High wet-strength\u003cbr\u003e\r\n•High chemical resistance to strong acid and alkali suspensions\u003cbr\u003e\r\n•Retention of gelatinous precipitate\u003cbr\u003e\r\n•22 µm nominal particle retention rating\u003cbr\u003e\r\n•Fast flow rate (Herzberg filtration speed 34 s)\u003cbr\u003e\r\n•Maximum of 0.006% ash concentration\u003cbr\u003e\r\n\u003cbr\u003e\r\nAlong with fast Grade 541 filter paper, the hardened, ashless range from Cytiva''s business includes general-purpose Grade 540 and Grade 542 for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGelatinous precipitate retention\u003cbr\u003e\r\nHardened ashless filter paper is recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Applications of Grade 541 papers include:\u003cbr\u003e\r\n\u003cbr\u003e\r\nUse as an animal foodstuff filter for determining fiber content\u003cbr\u003e\r\nDetermination of gelatin content in milk and cream\u003cbr\u003e\r\nQuantification of chloride in cement, as well as chloride and phosphorous in coal and coke\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015395107,"sku":"WHAT1541-150","price":101.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1541-xxx.jpg?v=1785203421"},{"product_id":"whatman-1ps-phase-separator-papers-27cm","title":"Whatman™ 1PS Phase Separator Papers 27cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman 1PS Phase Separator from Cytiva''s business is a hydrophobic filter for routine solvent extraction. Within seconds it retains aqueous phases, while solvent phases flow through.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Impregnated with stabilized silicone to create a hydrophobic filter\u003cbr\u003e\r\n•Multiple separations can be processed in parallel\u003cbr\u003e\r\n•No special training required\u003cbr\u003e\r\n•Can replace a separatory funnel in certain applications\u003cbr\u003e\r\n\u003cbr\u003e\r\nHydrophobic solvent extraction paper\u003cbr\u003e\r\nSolvent extraction can be time-consuming and messy when numerous separations are required. Cytiva''s Whatman 1PS Phase Separator is impregnated with stabilized silicone, creating a hydrophobic filter paper that can replace separatory funnel use in certain applications.\u003cbr\u003e\r\n\u003cbr\u003e\r\nRapid solvent extraction\u003cbr\u003e\r\nMixed phases are poured directly into the Whatman 1PS Phase Separator filter. The solvent phase flows through the paper quickly and cleanly, automatically stopping after the process is complete; all of the aqueous phase is retained. Droplets are automatically separated within seconds.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015427875,"sku":"WHAT2200-270","price":393.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2200-090.jpg?v=1785203423"},{"product_id":"standard-narrow-range-reel-4-0-to-7-0-range-7-mm-5-m-ph-indicators-and-test-papers-dispenser","title":"Standard Narrow Range, Reel, 4.0 to 7.0 range, 7mm × 5 m, pH indicators and test papers, dispenser","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nMade to stringent Whatman quality standards, Whatman pH indicator strips combine ease-of-use with unsurpassed accuracy and consistency.\u003cbr\u003e\r\n\u003cbr\u003e\r\nAll Whatman pH indicator strips enable:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Instant pH readings\u003cbr\u003e\r\n•Accuracy over a wide range of routine pH tests\u003cbr\u003e\r\n•Convenience and portability for field use\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe convenience of using pH indicator papers for rapid pH testing has led to widespread use in human medicine, agriculture, industry and environmental applications.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strips type CF (color bonded dye system)\u003cbr\u003e\r\nIndividual plastic support strips carry four different segments of dye-impregnated pH indicator papers. The resulting combination of color differences gives an extremely clear and accurate visual pH value. All the dyes are chemically bonded to the paper and cannot leach into solution, avoiding sample contamination and resultant anomalous pH readings.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strips type CS (integral comparison chart)\u003cbr\u003e\r\nEach pH test strip has a central segment of indicator dye and, printed alongside, eight or more different color segments marked with corresponding pH values for matching purposes.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe pH test value can be read by direct comparison of the pH test strip color against the integrated color bars. pH indicator strips with integrated comparison bars are excellent for colored solutions so that any changes in the color of the paper stock are automatically disregarded.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip Dispensers type TC (triple color band)\u003cbr\u003e\r\nThe pH test strip has three separate indicator dye color bands. It comes as a roll in a convenient dispenser that helps to protect the indicator paper from fumes or aerosols that may change the color of the paper. The individual combination of color change resulting from each test is compared with the color-coded comparison chart printed on the dispenser for fast and accurate pH testing.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip Dispensers type SR (standard range)\u003cbr\u003e\r\nA full range including some narrow ranges of pH indicator papers are available in a convenient dispenser.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip books\u003cbr\u003e\r\nThe book format is convenient for quick and economical pH testing, particularly for educational use.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman pH Indicator Strips are available in a wide range of pH ranges and formats.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015460643,"sku":"WHAT2600-102A","price":28.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2600-102A.jpg?v=1785203425"},{"product_id":"cyclopore-polycarbonate-membrane-2-0-µm-pore-size-25-mm-circle","title":"Cyclopore Polycarbonate Membrane, 2.0 µm pore size, 25mm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva's Whatman™ Cyclopore™ polycarbonate membranes are true pore size microporous membranes featuring the sharp cut-off and reproducible microfiltration characteristics of track-etched membranes.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Low affinity for stains improves visibility under a microscope\u003cbr\u003e\r\n•Low nonspecific protein binding minimizes sample loss of proteinaceous samples\u003cbr\u003e\r\n•Narrow micropore size distribution and high pore density support rapid surface capture of analyte\u003cbr\u003e\r\n•Negligible absorption and adsorption of filtrate; nonhygroscopic\u003cbr\u003e\r\n•No particle shedding enables clean filtrate\u003cbr\u003e\r\n•Biologically inert\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman™ Cyclopore™ track-etched membrane filter circles are suitable for a wide variety of applications, from general filtration, including cross-flow filtration (tangential flow filtration), to air and water monitoring, microorganism analysis, and many healthcare applications, including immunodiagnostics.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015493411,"sku":"WHAT7060-2511","price":177.73,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/7060-2511.jpg?v=1784614818"},{"product_id":"panph-plus-6x85mm-strips-ph-range-0-to-14-ph-indicators-and-test-papers","title":"Whatman™ pH indicator, Strips, range 0 to 14.0 (6x85mm)","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nMade to stringent Whatman quality standards, Whatman pH indicator strips combine ease-of-use with unsurpassed accuracy and consistency.\u003cbr\u003e\r\n\u003cbr\u003e\r\nAll Whatman pH indicator strips enable:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Instant pH readings\u003cbr\u003e\r\n•Accuracy over a wide range of routine pH tests\u003cbr\u003e\r\n•Convenience and portability for field use\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe convenience of using pH indicator papers for rapid pH testing has led to widespread use in human medicine, agriculture, industry and environmental applications.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strips type CF (color bonded dye system)\u003cbr\u003e\r\nIndividual plastic support strips carry four different segments of dye-impregnated pH indicator papers. The resulting combination of color differences gives an extremely clear and accurate visual pH value. All the dyes are chemically bonded to the paper and cannot leach into solution, avoiding sample contamination and resultant anomalous pH readings.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strips type CS (integral comparison chart)\u003cbr\u003e\r\nEach pH test strip has a central segment of indicator dye and, printed alongside, eight or more different color segments marked with corresponding pH values for matching purposes.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThe pH test value can be read by direct comparison of the pH test strip color against the integrated color bars. pH indicator strips with integrated comparison bars are excellent for colored solutions so that any changes in the color of the paper stock are automatically disregarded.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip Dispensers type TC (triple color band)\u003cbr\u003e\r\nThe pH test strip has three separate indicator dye color bands. It comes as a roll in a convenient dispenser that helps to protect the indicator paper from fumes or aerosols that may change the color of the paper. The individual combination of color change resulting from each test is compared with the color-coded comparison chart printed on the dispenser for fast and accurate pH testing.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip Dispensers type SR (standard range)\u003cbr\u003e\r\nA full range including some narrow ranges of pH indicator papers are available in a convenient dispenser.\u003cbr\u003e\r\n\u003cbr\u003e\r\npH Indicator Strip books\u003cbr\u003e\r\nThe book format is convenient for quick and economical pH testing, particularly for educational use.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman pH Indicator Strips are available in a wide range of pH ranges and formats.\u003cbr\u003e\r\n\u003cbr\u003e\r\n**Image is a sample only**\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015558947,"sku":"WHAT10362000","price":31.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10362000.jpg?v=1785203428"},{"product_id":"grade-43-ashless-filter-paper-for-inorganic-analysis-90-mm-circle","title":"Whatman™ Grade 43 Ashless Filter Paper for Inorganic Analysis, 90mm circle","description":"\u003cp\u003eCytiva's Whatman Grade 43 filters support inorganic analysis and other forms of instrumental analyses. The low ash content also makes Grade 43 appropriate for gravimetric analyses requiring sample combustion.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Very low ash content (0.007% ash concentration maximum)\u003cbr\u003e\r\n•Intermediate particle retention rating of 16 µm\u003cbr\u003e\r\n•Herzberg filtration speed of 155 s\u003cbr\u003e\r\n•Particle collection between that of Grades 40 and 41\u003cbr\u003e\r\n•Cytiva offers other ashless grades to ensure that you have the appropriate particle retention rating for your needs. •Hardened ashless grades are also available for analyses that use strong acid\/alkali solutions.\u003cbr\u003e\r\n\u003cbr\u003e\r\nParticle collection and inorganic analysis\u003cbr\u003e\r\nWhatman Grade 43 from Cytiva's business can be ashed during gravimetric analysis without contributing substantially to the measured weight. These filters are also appropriate for:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Inorganic analysis in the construction, mining, and steel industries\u003cbr\u003e\r\n•Particle collection for air pollution monitoring for subsequent analysis by X-Ray fluorescence (XRF) techniques\u003cbr\u003e\r\n•Soil analysis\u003cbr\u003e\r\n•Foodstuffs filtration analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\nLooking for a filter paper, membrane filter, or syringe filter? Let Cytiva help you find the optimal filter for your needs to ensure reliable analysis.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015591715,"sku":"WHAT1443-090","price":39.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1443-090.jpg?v=1784182834"},{"product_id":"grade-541-ashless-fast-filter-paper-12-5cm","title":"Whatman™ Grade 541 Ashless Fast Filter Paper 12.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•High wet-strength\u003cbr\u003e\r\n•High chemical resistance to strong acid and alkali suspensions\u003cbr\u003e\r\n•Retention of gelatinous precipitate\u003cbr\u003e\r\n•22 µm nominal particle retention rating\u003cbr\u003e\r\n•Fast flow rate (Herzberg filtration speed 34 s)\u003cbr\u003e\r\n•Maximum of 0.006% ash concentration\u003cbr\u003e\r\n\u003cbr\u003e\r\nAlong with fast Grade 541 filter paper, the hardened, ashless range from Cytiva''s business includes general-purpose Grade 540 and Grade 542 for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGelatinous precipitate retention\u003cbr\u003e\r\nHardened ashless filter paper is recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Applications of Grade 541 papers include:\u003cbr\u003e\r\n\u003cbr\u003e\r\nUse as an animal foodstuff filter for determining fiber content\u003cbr\u003e\r\nDetermination of gelatin content in milk and cream\u003cbr\u003e\r\nQuantification of chloride in cement, as well as chloride and phosphorous in coal and coke\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015624483,"sku":"WHAT1541-125","price":71.4,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1541-xxx_f0101ae4-ba53-40e4-94fe-04d4bf7bee98.jpg?v=1785203430"},{"product_id":"whatman-grade-934-ah-filter-for-total-suspended-solids-analysis-32-mm-circle","title":"Whatman™ Grade 934-AH Filter for Total Suspended Solids Analysis, 32mm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Grade 934-AH borosilicate glass microfiber filters feature a smooth surface with high retention efficiency and high flow rates for large-volume liquid filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nHigh loading capacity enables efficient filtration of suspended solids:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Smooth surface: provides efficient precipitate recovery\u003cbr\u003e\r\n•High loading capacity: enables processing of turbid solutions\u003cbr\u003e\r\n•High-grade borosilicate glass microfiber: withstands temperatures up to 550°C\u003cbr\u003e\r\n•Nominal particle retention of 1.5 µm\u003cbr\u003e\r\n•Low fiber shedding\u003cbr\u003e\r\n\u003cbr\u003e\r\nReady-to-use (RTU) formats available for Total Suspended Solid (TSS), Total Dissolved Solids (TDS) and Total Suspended Volatiles (VSS).\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH filters are well suited for large-volume filtration. Applications include cell harvesting, liquid scintillation counting, air pollution monitoring, and water pollution monitoring.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH binder-free glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nDiscover other binder-free Whatman glass microfiber filters. Options are available with different wet strengths, loading capacities, filtration speeds, and particle retentions.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015755555,"sku":"WHAT1827-032","price":55.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1827-xxx.jpg?v=1785203433"},{"product_id":"grade-2-qualitative-filter-paper-standard-grade-circle-18-5cm","title":"Whatman™ Grade 2 Qualitative Filter Paper Standard Whatman™ Grade, circle, 18.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade 2 qualitative filter papers have a particle retention of 8 µm, slightly more retentive than Grade 1, and with an equivalent increase in filtration time. The filters are tested according to the procedure detailed in ASTM E 2187-09, Sections 9.3.1 and 9.3.2. The paper meets both the conditioned (26.1 ± 0.5 g, SD \u0026lt; 0.3 g) and dried (24.7 ± 0.5 g, SD \u0026lt; 0.3 g) weight requirements.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Each lot is guaranteed to meet the ASTM E 2187-09 specifications\u003cbr\u003e\r\n•Simplifies testing process by removing lot suitability testing\u003cbr\u003e\r\n•Just condition and use\u003cbr\u003e\r\n\u003cbr\u003e\r\nThese cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade 2: 8 µm\u003cbr\u003e\r\nIn addition to general filtration in the 8 µm particle size range, the extra absorbency is beneficial to applications such as holding soil nutrient in plant growth trials and for monitoring specific contaminants in the atmosphere and in soil testing. Also available prepleated as Grade 2V.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015919395,"sku":"WHAT1002-185","price":38.1,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1002_6c16b9ec-b179-4674-a482-a3b9695c9eef.jpg?v=1788490226"},{"product_id":"grade-gf-c-glass-microfiber-filter-5-5cm-circle","title":"Whatman™ Grade GF\/C Glass Microfiber Filter, 5.5cm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman™ filter paper Grade GF\/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFilter Paper for Total Suspended Solids:\u003cbr\u003e\r\nWhatman binder free glass microfiber filter grade GF\/C from Cytiva is widely used as a total suspended solids filter for applications testing both potable water and waste water.\u003cbr\u003e\r\n\u003cbr\u003e\r\nBrowse below to find your binder-free Whatman glass filters and the right filter paper to match your laboratory and filtration research needs, or learn more about our ready-to-use GF\/C RTU that is pre-washed and dried but not weighed. The GF\/C RTU line pre-treats our traditional GF\/C filter with washing, drying, cooling (in a desiccator), and weighing steps aligned to the requirements of EN 872 – the European norm for suspended solids in water testing.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660015952163,"sku":"WHAT1822-055","price":74.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1822-xxx.jpg?v=1786408215"},{"product_id":"grade-5-qualitative-filter-paper-standard-grade-circle-4-5-5cm","title":"Whatman™ Grade 5 Qualitative Filter Paper Standard Whatman™ Grade, circle, 5.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Acid-treated for high wet-strength\u003cbr\u003e\r\n•Extremely low ash content (0.006% ash maximum)\u003cbr\u003e\r\n•Nominal particle retention of 8 µm\u003cbr\u003e\r\n•Medium flow rate (Herzberg filtration speed 200 s)\u003cbr\u003e\r\n•High chemical resistance to strong acid and alkali suspensions\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva''s business offers hardened ashless filter paper for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGravimetric analysis of acid and alkali suspensions\u003cbr\u003e\r\nCytiva''s hardened, ashless Grade 540 lab filter paper is frequently used as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. The acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660016017699,"sku":"WHAT1454-055","price":24.6,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1540-150_1ca46425-5d6a-4368-b482-eb6207bcaca7.jpg?v=1785203438"},{"product_id":"grade-gf-c-glass-microfiber-filter-15cm-circle","title":"Whatman™ Grade GF\/C Glass Microfiber Filter, 15cm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman™ filter paper Grade GF\/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFilter Paper for Total Suspended Solids:\u003cbr\u003e\r\nWhatman binder free glass microfiber filter grade GF\/C from Cytiva is widely used as a total suspended solids filter for applications testing both potable water and waste water.\u003cbr\u003e\r\n\u003cbr\u003e\r\nBrowse below to find your binder-free Whatman glass filters and the right filter paper to match your laboratory and filtration research needs, or learn more about our ready-to-use GF\/C RTU that is pre-washed and dried but not weighed. The GF\/C RTU line pre-treats our traditional GF\/C filter with washing, drying, cooling (in a desiccator), and weighing steps aligned to the requirements of EN 872 – the European norm for suspended solids in water testing.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017459491,"sku":"WHAT1822-150","price":255.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1822.150.jpg?v=1788490229"},{"product_id":"acid-alkali-universal-ph-indicator-blue-reel-7-mm-5-m-litmus","title":"Acid-Alkali Universal pH Indicator, Blue Reel, 7mm × 5 m, Litmus","description":"\u003cp\u003eBlue and red litmus paper and phenophthalein strips are mixed-indicator tests designed for fast, accurate, and reliable pH solution testing.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017525027,"sku":"WHAT2600-201A","price":26.6,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2600-201A_ef29848f-f4d8-4803-b667-153e65c0053f.jpg?v=1784072749"},{"product_id":"cellulose-soxhlet-extraction-thimble-single-1-mm-wall-25-100-mm","title":"Cellulose Soxhlet Extraction Thimble, single 1mm wall, 25 × 100mm ","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman cellulose thimbles are manufactured from high-quality alpha cellulose cotton linter for high-performance use in automated Soxhlet extractor systems. Used in air and waste gas analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Used in a wide variety of solid-liquid extraction studies, including lipid and pesticide analyses in food and soil samples\u003cbr\u003e\r\n•Suitable for temperatures up to 120°C (248°F)\u003cbr\u003e\r\nExcellent mechanical strength and retention\u003cbr\u003e\r\n•Wall thickness of standard thimbles is 1–1.5 mm to support application need\u003cbr\u003e\r\n•Option for double thickness for added rigidity\u003cbr\u003e\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nCellulose thimble options for Soxhlet extractor systems\u003cbr\u003e\r\nStandard extraction thimbles have a wall thickness of 1–1.5 mm. Double-thickness thimbles have a wall thickness of approximately 2 mm for applications that require higher retention, increased wet or dry strength, or increased rigidity. Measurements can be matched to specific Soxhlet extractor systems.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017557795,"sku":"WHAT2800-250","price":115.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2800-xxx.jpg?v=1785203440"},{"product_id":"grade-gf-b-filter-for-liquid-scintillation-4-7cm-circle","title":"Whatman™ Grade GF\/B Filter for Liquid Scintillation, 4.7cm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman brand Grade GF\/B is a thick filter with fine particle filter and good loading capacity. GF\/B filters are particularly useful for liquid clarification and liquid scintillation counting.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Nominal particle retention of 1.0 µm\u003cbr\u003e\r\n•Appropriate for liquid clarification and\/or liquid scintillation\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva offers a wide range of glass microfiber filters to support your analyses. See the Whatman range of glass, binder-free filters to find the thickness and particle retention for your application.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGF\/B fine particle filter benefits\u003cbr\u003e\r\nLiquid scintillation counting requires a fine particle filter, preferably with a high loading capacity. Grade GF\/B filters from Cytiva''s business are ideal for this and similar applications such as waste characterization and liquid clarification for suspended solids analysis.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017623331,"sku":"WHAT1821-047","price":75.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1821-xxx.jpg?v=1785203443"},{"product_id":"whatman-grade-934-ah-glass-microfiber-filters-11cm","title":"Whatman™ Grade 934-AH Glass Microfiber Filters 11cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Grade 934-AH borosilicate glass microfiber filters feature a smooth surface with high retention efficiency and high flow rates for large-volume liquid filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nHigh loading capacity enables efficient filtration of suspended solids:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Smooth surface: provides efficient precipitate recovery\u003cbr\u003e\r\n•High loading capacity: enables processing of turbid solutions\u003cbr\u003e\r\n•High-grade borosilicate glass microfiber: withstands temperatures up to 550°C\u003cbr\u003e\r\n•Nominal particle retention of 1.5 µm\u003cbr\u003e\r\n•Low fiber shedding\u003cbr\u003e\r\n\u003cbr\u003e\r\nReady-to-use (RTU) formats available for Total Suspended Solid (TSS), Total Dissolved Solids (TDS) and Total Suspended Volatiles (VSS).\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH filters are well suited for large-volume filtration. Applications include cell harvesting, liquid scintillation counting, air pollution monitoring, and water pollution monitoring.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH binder-free glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nDiscover other binder-free Whatman glass microfiber filters. Options are available with different wet strengths, loading capacities, filtration speeds, and particle retentions.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017656099,"sku":"WHAT1827-110","price":220.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1827-xxx_aebefc19-0384-4018-bc2c-df4b25680941.jpg?v=1785203445"},{"product_id":"grade-gf-6-filter-for-water-and-wastewater-analysis-55-mm-circle","title":"Whatman™ Grade GF 6 Filter for Water and Wastewater Analysis, 55mm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Grade GF 6 glass microfiber filters from Cytiva's business are suitable for water and wastewater analysis, with extremely fine particle retention and added strength.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Sub micron filter retention efficiency to capture extremely small particles\u003cbr\u003e\r\n•Inorganic binder for increased strength\u003cbr\u003e\r\n•Temperature-resistant up to 500°C\u003cbr\u003e\r\n•Can be used as a pre-filter for dense samples\u003cbr\u003e\r\n•Frequently used in waste water analysis\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva offers a range of glass filters with both organic and inorganic binders.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017688867,"sku":"WHAT10370003","price":156.6,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10370003.jpg?v=1788791738"},{"product_id":"grade-gf-a-glass-microfiber-filters-binder-free-2-5cm","title":"Whatman™ Grade GF\/A Glass Microfiber Filters, Binder Free 2.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade GF\/A glass microfiber filters, binder free, feature fine particle retention for a range of liquid and air filtration applications. These have a nominal particle retention of 1.6µm at 98% efficiency and are suited for a variety of applications involving large sample volumes such as:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Water and air pollution monitoring and wastewater filtering\u003cbr\u003e\r\n•Foodstuff analysis\u003cbr\u003e\r\n•Filtering of algae and bacteria cultures\u003cbr\u003e\r\n•Protein filtration\u003cbr\u003e\r\n•Radioimmunoassay of weak ß emitters\u003cbr\u003e\r\n•Gravimetric determination of airborne particulates\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade GF\/A binder-free Whatman glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFind the right particle retention rating and thickness for your analysis in the Whatman binder-free glass microfiber range.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017721635,"sku":"WHAT1820-025","price":32.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1820-xxx.jpg?v=1785203447"},{"product_id":"grade-1-qualitative-filter-paper-standard-grade-circle-12-5cm","title":"Whatman™ Grade 1 Qualitative Filter Paper Standard Whatman™ Grade, circle, 12.5cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate\u003cbr\u003e\r\n•Agricultural soil analysis and seed testing procedures\u003cbr\u003e\r\n•Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid\u003cbr\u003e\r\n•Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity\u003cbr\u003e\r\n•Gas detection by quantitative chromogenesis with optical reflectance\u003cbr\u003e\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nMedium flow rate and retention for a wide range of qualitative analytical separations\u003cbr\u003e\r\nGrade 1 Qualitative Filter Papers (11 µm particle retention) are available in a variety of sizes and formats including circles, sheets and prepleated filters. They are also available in FilterCup format, a convenient, 250 ml capacity disposable 70 mm filter funnel molded from polypropylene with an integral, heat-bonded filter.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017787171,"sku":"WHAT1001-125","price":17.4,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1001-047_b206e15a-b932-4140-9ac0-00aaa0b1ad57.jpg?v=1788490231"},{"product_id":"grade-5-qualitative-filter-paper-standard-grade-circle-24cm","title":"Whatman™ Grade 5 Qualitative Filter Paper Standard Whatman™ Grade, circle, 24cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nA standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.\u003cbr\u003e\r\nThese cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade 5: 2.5 µm\u003cbr\u003e\r\nThe maximum degree of fine particle filtration in the qualitative range. Capable of retaining the fine precipitates encountered in chemical analysis. Slow flow rate. Excellent clarifying filter for cloudy suspensions and for water and soil analysis. Also available prepleated as Grade 5V.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017819939,"sku":"WHAT1005-240","price":107.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1005.jpg?v=1788490234"},{"product_id":"grade-113-qualitative-filter-paper-wet-strengthened-circle-11cm","title":"Whatman™ Grade 113 Qualitative Filter Paper Wet-Strengthened, circle, 11cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nUltra high loading capacity with a particle retention well suited for use with coarse or gelatinous precipitates. Fastest flow rate of the qualitative grades. Creped surface. Thickest filter paper in the qualitative range.\u003cbr\u003e\r\nThese extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any significant impurities into the filtrate. The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations, etc. Some wet strengthened grades are available in folded (prepleated) forms.\u003cbr\u003e\r\n\u003cbr\u003e\r\nThis filter is also available in the FilterCup, a convenient, disposable 70 mm filter funnel with a 250 ml capacity, molded from polypropylene with an integral, heat bonded filter. Also available as Grade 113V.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017885475,"sku":"WHAT1113-110","price":30.1,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1113-110.jpg?v=1785203450"},{"product_id":"cellulose-nitrate-membrane-circle-plain-0-45-µm-pore-size-25-mm","title":"Cellulose Nitrate Membrane Circle, plain, 0.45 µm pore size, 25mm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva's Whatman™ cellulose nitrate membrane filters offer:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Narrow sub-micron pore size distribution for improved surface capture and analysis.\u003cbr\u003e\r\n•Low extractable levels to ensure sample integrity.\u003cbr\u003e\r\n\u003cbr\u003e\r\nStandard membrane filter for most applications involving particles and cells from 0.1 µm to 12.0 µm.Standard membrane filter for most applications involving particles and cells from 0.1 µm to 12.0 µm.\u003cbr\u003e\r\n\u003cbr\u003e\r\nNarrow pore size distribution - Very fine particles can be retained for recovery or microscopic viewing.\u003cbr\u003e\r\n\u003cbr\u003e\r\nIncreased temperature stability - Temperature-resistant cellulose nitrate can withstand autoclaving up to 121°C with no loss in integrity.\u003cbr\u003e\r\n\u003cbr\u003e\r\nHigh strength and flexibility - Cytiva's cellulose nitrate membranes are manufactured to have strength and flexibility, to prevent tearing during handling and loading, as well as reduced shrinkage during autoclaving, to support physical recovery of deposits.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhite plain filters - White membrane surface allows colony counting, particle counting, and sterility testing of dark samples.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017918243,"sku":"WHAT7184-002","price":130.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/7184-002.jpg?v=1784614821"},{"product_id":"grade-gf-a-glass-microfiber-filters-binder-free-15cm","title":"Whatman™ Grade GF\/A Glass Microfiber Filters, Binder Free 15cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade GF\/A glass microfiber filters, binder free, feature fine particle retention for a range of liquid and air filtration applications. These have a nominal particle retention of 1.6µm at 98% efficiency and are suited for a variety of applications involving large sample volumes such as:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Water and air pollution monitoring and wastewater filtering\u003cbr\u003e\r\n•Foodstuff analysis\u003cbr\u003e\r\n•Filtering of algae and bacteria cultures\u003cbr\u003e\r\n•Protein filtration\u003cbr\u003e\r\n•Radioimmunoassay of weak ß emitters\u003cbr\u003e\r\n•Gravimetric determination of airborne particulates\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade GF\/A binder-free Whatman glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFind the right particle retention rating and thickness for your analysis in the Whatman binder-free glass microfiber range.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660017951011,"sku":"WHAT1820-150","price":202.7,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1820-xxx_a0239b3e-ec02-48b6-82d7-479760ad003f.jpg?v=1785203452"},{"product_id":"grade-1-qualitative-filter-paper-standard-grade-circle-24-0cm","title":"Whatman™ Grade 1 Qualitative Filter Paper Standard Whatman™ Grade, circle, 24.0cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate\u003cbr\u003e\r\n•Agricultural soil analysis and seed testing procedures\u003cbr\u003e\r\n•Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid\u003cbr\u003e\r\n•Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity\u003cbr\u003e\r\n•Gas detection by quantitative chromogenesis with optical reflectance\u003cbr\u003e\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nMedium flow rate and retention for a wide range of qualitative analytical separations\u003cbr\u003e\r\nGrade 1 Qualitative Filter Papers (11 µm particle retention) are available in a variety of sizes and formats including circles, sheets and prepleated filters. They are also available in FilterCup format, a convenient, 250 ml capacity disposable 70 mm filter funnel molded from polypropylene with an integral, heat-bonded filter.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018016547,"sku":"WHAT1001-240","price":57.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1001-047_e07712ef-0e4c-4f9d-bc0d-4dc74fb08225.jpg?v=1788490236"},{"product_id":"amersham-protran-0-45-nc-300mm-4m-1-roll-pk","title":"Amersham Protran 0.45 NC 300mm × 4m (1 Roll)","description":"\u003cp\u003eAmersham Protran 0.45 NC is a nitrocellulose membrane with a 0.45 µm pore size for use in Western blot protocols.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Low background and excellent signal-to-noise ratios\u003cbr\u003e\r\n•Compatible with a variety of labelling and detection systems\u003cbr\u003e\r\n•High binding capacity\u003cbr\u003e\r\n•Suitable for proteins with a wide range of molecular weights\u003cbr\u003e\r\n•Ideal tool for your antibody purification and analysis workflow\u003cbr\u003e\r\n•Proprietary nitrocellulose formula ensures a long shelf life of bound proteins\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018049315,"sku":"WHAT10600002","price":549.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/10600002.jpg?v=1784614823"},{"product_id":"grade-gf-c-glass-microfiber-filter-110-mm-circle","title":"Whatman™ Grade GF\/C Glass Microfiber Filter, 110mm circle","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman™ filter paper Grade GF\/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFilter Paper for Total Suspended Solids:\u003cbr\u003e\r\nWhatman binder free glass microfiber filter grade GF\/C from Cytiva is widely used as a total suspended solids filter for applications testing both potable water and waste water.\u003cbr\u003e\r\n\u003cbr\u003e\r\nBrowse below to find your binder-free Whatman glass filters and the right filter paper to match your laboratory and filtration research needs, or learn more about our ready-to-use GF\/C RTU that is pre-washed and dried but not weighed. The GF\/C RTU line pre-treats our traditional GF\/C filter with washing, drying, cooling (in a desiccator), and weighing steps aligned to the requirements of EN 872 – the European norm for suspended solids in water testing.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018082083,"sku":"WHAT1822-110","price":140.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1822-090.png?v=1788490240"},{"product_id":"whatman-grade-934-ah-glass-microfiber-filters-9-0cm","title":"Whatman™ Grade 934-AH Glass Microfiber Filters 9.0cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Grade 934-AH borosilicate glass microfiber filters feature a smooth surface with high retention efficiency and high flow rates for large-volume liquid filtration.\u003cbr\u003e\r\n\u003cbr\u003e\r\nHigh loading capacity enables efficient filtration of suspended solids:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Smooth surface: provides efficient precipitate recovery\u003cbr\u003e\r\n•High loading capacity: enables processing of turbid solutions\u003cbr\u003e\r\n•High-grade borosilicate glass microfiber: withstands temperatures up to 550°C\u003cbr\u003e\r\n•Nominal particle retention of 1.5 µm\u003cbr\u003e\r\n•Low fiber shedding\u003cbr\u003e\r\n\u003cbr\u003e\r\nReady-to-use (RTU) formats available for Total Suspended Solid (TSS), Total Dissolved Solids (TDS) and Total Suspended Volatiles (VSS).\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH filters are well suited for large-volume filtration. Applications include cell harvesting, liquid scintillation counting, air pollution monitoring, and water pollution monitoring.\u003cbr\u003e\r\n\u003cbr\u003e\r\nWhatman Grade 934-AH binder-free glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nDiscover other binder-free Whatman glass microfiber filters. Options are available with different wet strengths, loading capacities, filtration speeds, and particle retentions.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018114851,"sku":"WHAT1827-090","price":191.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1827-xxx_2fd31a2f-0aa1-4420-9f16-1eeadc7a61b2.jpg?v=1785203455"},{"product_id":"puradisc-13-mm-polytetrafluoroethylene-syringe-filter-0-45-µm-non-sterile","title":"Puradisc 13mm Polytetrafluoroethylene Syringe Filter, 0.45 µm, non-sterile","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Puradisc™ non-sterile syringe filters with polytetrafluoroethylene (PTFE) membrane combine premium quality with economic efficiency.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Choice of 4 mm, 13 mm, 25 mm, and 30 mm syringe filter diameter to suit sample volume\u003cbr\u003e\r\n•Range of pore sizes for retaining a variety of particles\u003cbr\u003e\r\n•Optional sterile, medical-grade blister pack\u003cbr\u003e\r\n•Optional tube-tip format for accurate dispensing into a micro-vial\u003cbr\u003e\r\n•Whatman™ Puradisc™ syringe filters cater to a wide variety of sample types and applications, including capillary electrophoresis, biological preparations, protein filtration, and UV spectroscopy sample preparation. Different membrane media support diverse chemical solvents and compounds.\u003cbr\u003e\r\n\u003cbr\u003e\r\nPolytetrafluoroethylene (PTFE) syringe filter options\u003cbr\u003e\r\nThe Whatman™ Puradisc™ PTFE syringe filter is a hydrophobic membrane that is chemically stable and inert. It exhibits low protein binding, and its main application is filtration of non-aqueous samples. Prior to filtering of aqueous samples, the membrane must be pre-wetted with a water-miscible organic solvent.\u003cbr\u003e\r\n\u003cbr\u003e\r\nPuradisc is available in the following membrane materials: regenerated cellulose (RC), cellulose nitrate, nylon, polytetrafluoroethylene (PTFE), polyethersulfone (PES), polypropylene, polyvinylidene difluoride (PVDF), and cellulose acetate.\u003cbr\u003e\r\n\u003cbr\u003e\r\nCytiva also offers high-performance GD\/X syringe filters with a multi-layer glass fiber prefilter for filtering larger volumes of harder-to-filter samples.\u003cbr\u003e\r\n\u003cbr\u003e\r\nISCC+ certified Biobased polypropylene housing (25mm devices):\u003cbr\u003e\r\n•90% Biobased plastic resin.\u003cbr\u003e\r\n•Biobased plastic resin is ISCC Plus certified using Mass Balance approach.\u003cbr\u003e\r\n•The polypropylene accounts for 95% of the weight\/composition of the syringe filters.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018147619,"sku":"WHAT6784-1304","price":299.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/6784-1304.jpg?v=1785203457"},{"product_id":"nylon-filter-discs-47mm-0-8µm","title":"Nylon filter discs 47mm 0.8µm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nHigh-quality nylon membranes are suitable for filtering aqueous solutions and most organic solvents. The membranes are suitable for use with a wide range of biological preparations and can be used where other membranes are unsuitable or difficult to use. Nylon membranes are hydrophilic, removing the need for wetting agents that could be extracted when filtering aqueous solutions. The membranes are flexible, durable, tear resistant, and autoclavable. Due to good chemical compatibility and low extractables the membrane is suitable for filtration of organic solvents and sample preparation. Applications include: filtration of aqueous and organic mobile phases, vacuum degassing, filtration of tissue culture media, microbiological media, buffers, and solutions.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018180387,"sku":"WHAT7408-004","price":233.7,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/7402-002.jpg?v=1785203460"},{"product_id":"cellulose-soxhlet-extraction-thimble-single-1-mm-wall-33-94-mm","title":"Cellulose Soxhlet Extraction Thimble, single 1mm wall, 33 × 94mm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nCytiva''s Whatman cellulose thimbles are manufactured from high-quality alpha cellulose cotton linter for high-performance use in automated Soxhlet extractor systems. Used in air and waste gas analysis.\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Used in a wide variety of solid-liquid extraction studies, including lipid and pesticide analyses in food and soil samples\u003cbr\u003e\r\n•Suitable for temperatures up to 120°C (248°F)\u003cbr\u003e\r\nExcellent mechanical strength and retention\u003cbr\u003e\r\n•Wall thickness of standard thimbles is 1–1.5 mm to support application need\u003cbr\u003e\r\n•Option for double thickness for added rigidity\u003cbr\u003e\r\n\u003cbr\u003e\r\n\u003cbr\u003e\r\nCellulose thimble options for Soxhlet extractor systems\u003cbr\u003e\r\nStandard extraction thimbles have a wall thickness of 1–1.5 mm. Double-thickness thimbles have a wall thickness of approximately 2 mm for applications that require higher retention, increased wet or dry strength, or increased rigidity. Measurements can be matched to specific Soxhlet extractor systems.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018245923,"sku":"WHAT2800-339","price":140.7,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2800-xxx_7a6290ff-b9bd-4cdc-8ddb-844277c065d6.jpg?v=1785203462"},{"product_id":"grade-gf-a-glass-microfiber-filters-binder-free-11-0cm","title":"Whatman™ Grade GF\/A Glass Microfiber Filters, Binder Free 11.0cm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman™ Grade GF\/A glass microfiber filters, binder free, feature fine particle retention for a range of liquid and air filtration applications. These have a nominal particle retention of 1.6µm at 98% efficiency and are suited for a variety of applications involving large sample volumes such as:\u003cbr\u003e\r\n\u003cbr\u003e\r\n•Water and air pollution monitoring and wastewater filtering\u003cbr\u003e\r\n•Foodstuff analysis\u003cbr\u003e\r\n•Filtering of algae and bacteria cultures\u003cbr\u003e\r\n•Protein filtration\u003cbr\u003e\r\n•Radioimmunoassay of weak ß emitters\u003cbr\u003e\r\n•Gravimetric determination of airborne particulates\u003cbr\u003e\r\n\u003cbr\u003e\r\nGrade GF\/A binder-free Whatman glass microfiber filters are available in a wide range of sizes in circles and sheets.\u003cbr\u003e\r\n\u003cbr\u003e\r\nFind the right particle retention rating and thickness for your analysis in the Whatman binder-free glass microfiber range.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018311459,"sku":"WHAT1820-110","price":110.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/1820-xxx_39a1662c-fd21-42cd-a708-ac4b01f195d0.jpg?v=1785203466"},{"product_id":"benchkote-surface-protector-reel-92-cm-50-m-1-pc","title":"Benchkote Surface Protector, Reel 92 cm × 50 m reel","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nWhatman Benchkote surface protector is an absorbent lab paper that protects surfaces against hazardous spills. After use, the bench protector sheet is incinerated or disposed of according to local regulations. \u003cbr\u003e\r\n\u003cbr\u003e\r\n•Strong: Benchkote surface protector is strong and tear resistant when wet or dry\u003cbr\u003e\r\n•Ease-of-use: Smooth white surface can be written on with ink or pencil and lies flat\u003cbr\u003e\r\n•Clean: Suitable for saturation with disinfectant to protect benches where pathogens and other bacteria are present\u003cbr\u003e\r\n•Disposable: Benchkote paper can be incinerated after use\u003cbr\u003e\r\n•Safe combustion: Polyethylene layer is rapidly consumed when incinerated and does not melt or drip\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018344227,"sku":"WHAT2300-772","price":411.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/2300-772.jpg?v=1784614826"},{"product_id":"nylon-filter-discs-47mm-0-45µm","title":"Nylon filter discs 47mm 0.45µm","description":"\u003cp\u003eOverview\u003cbr\u003e\r\nHigh-quality nylon membranes are suitable for filtering aqueous solutions and most organic solvents. The membranes are suitable for use with a wide range of biological preparations and can be used where other membranes are unsuitable or difficult to use. Nylon membranes are hydrophilic, removing the need for wetting agents that could be extracted when filtering aqueous solutions. The membranes are flexible, durable, tear resistant, and autoclavable. Due to good chemical compatibility and low extractables the membrane is suitable for filtration of organic solvents and sample preparation. Applications include: filtration of aqueous and organic mobile phases, vacuum degassing, filtration of tissue culture media, microbiological media, buffers, and solutions.\u003c\/p\u003e","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018475299,"sku":"WHAT7404-004","price":218.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/7402-002_25bdc533-f582-4312-8201-3035cb9118b4.jpg?v=1785203468"},{"product_id":"t-spacers-pvc-white-1-x-105mm","title":"Spacers PVC White t = 1.0mm x l = 105mm (thickness x length)","description":"","brand":"Whatman","offers":[{"title":"Default Title","offer_id":53660018508067,"sku":"WHATSE2619T-2-1.0","price":163.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/files\/SE2619T-2-1.0.jpg?v=1788471017"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/5896\/9012\/collections\/cytiva_whatman_logo_b9e79e2b-14bb-44cf-a323-092cfd7b6401.webp?v=1775599968","url":"https:\/\/onelab.co.nz\/collections\/whatman.oembed","provider":"Onelab","version":"1.0","type":"link"}