5ml Glass test tube, Disposable, 12x75mm, 0.6mm wall, Borosilicate Glass

These glass tubes are made of borosilicate glass that withstands thermal shock and chemical attack, reduces pH changes and contaminants leached from soda lime glass tubes.
The tubes are uniform bottoms, fire-polished rims, consistent lengths, and conveniently packaged in shrink-wrapped shelf inner boxes.
They can be used for mixing heating and/or holding small quantities of chemicals for assays, as well as tissue culture, blood banks, and other laboratory experiments.