Whatman™ multigrade 150 glass microfiber prefilter, 2 µm particle retention rating, 47 mm circles

Overview
Cytiva''s Whatman GMF 150 prefilters are multilayer graded density filters for rapid and efficient filtration of samples with high solids content.
•Compared to an unprotected membrane, greater sample volume can be filtered
•Higher particulate loading capacity and faster flow rates than uniform prefilters
•Excellent particle retention (both large and small particles)
•100% borosilicate glass, binder-free
•Extends life of final filter membrane

Multilayer filter design
When a sample is applied, the multigrade glass filter traps larger particles in its pores or on the surface of the coarse layer, medium-sized particles in the interface meshing, and smaller particles in the interstices of the fine layer. The multilayer design provides comprehensive particle retention.