Maine Membrane Filtration Pack 1214866 by Maine Manufacturing GROUP: Lab Equipment & Accessories:Microbiology Products:Membrane Filtration Item Description: Nitrocellulose Membrane with Pad, Black/ White Grid, Sterile, 0.45�m, 47mm, 100/pk Packaging Desc: Membrane Nc Disc Blk/Wht W/Pad.45Um 47Mm 100/Pack Country of Origin: Harmonized Tariff Code: Product Description: