Membrane circles white, 50 mm, mixed esters, 0.45 um, 3.1 mm black grid, sterile. In these products the microorganism counts are very low and are therefore determined quantitatively via enrichment methods.
Filter Paper 150 mm Grade 3 Circles, designed for gravimetric analysis and the preparation of samples for instrumental analysis, High purity, for use in a wide range of critical filtration procedures, Wide range of filter grades and diameters, Ashless 0.007% are very pure filters