Maine Membrane Filtration Pack 1215207 by Maine Manufacturing GROUP: Lab Equipment & Accessories:Microbiology Products:Membrane Filtration Item Description: Nitrocellulose Membrane, White/ Black Grid, 0.45�m, 47mm, 100/pk Packaging Desc: Membrane Nc Disc Wht/Blk.45Um 47Mm 100/Pack Country of Origin: Harmonized Tariff Code: Product Description: