membrane filters in diameters from 13mm to 293mm and materials including PES, ... , 47, 90, 142, 293 / gridded, black, sterilePolyesteramide (Nylon)0.1-5.013, 25, 47, 90, 142, 293Plyfluortetraethylene (PTFE)0.1-3 ... .013, 25, 47, 90, 142, 293Glass Fiber0.5, 1.0, 2.013, 25, 47, 90, 142, 293Acetate Cellulose0 ...