Membrane Filter, Pore Size 0.45 µm, Black Gridded, Diameter 47 mm, 100/pk, without pad.  ME25/21ST

Product Number:  10406870

These 47-mm diameter, 0.45-µm pore size GN-Metricel membrane filters meet or surpass all U.S. Environmental Protection Agency (USEPA) and American Society for Testing and Materials (ASTM) specifications to ensure complete retention and maximum recovery of bacteria. 100/pk, without pad.
Black membranes make bacteria, yeast, and mold colonies more distinct and easier to count. Filters are available in convenient, pre-sterilized, individually sealed packs (P/N 10406870) or in resealable envelopes. Phosphate free.