Maine Membrane Filtration Pack 10497503 by Maine Manufacturing GROUP: Lab Equipment & Accessories:Microbiology Products:Membrane Filtration Item Description: Microbiological Monitor, 47mm, 0.8�m Pore Size, Black/ White Grid, 100mL, 50/pk Packaging Desc: Monitor Microbio Blk/Wht Grd47Mm 100Ml 0.8Um50/Pack Country of Origin: US Harmonized Tariff Code: 8421.29.00 Product Description: