Maine Analytical Funnels Pack 10497508 by Maine Manufacturing GROUP: Lab Equipment & Accessories:Filtration Devices:Specialty Devices Item Description: Funnel, White/ Black Grid, 100mL, 47mm Dia, 0.45�m Pore Size, 50/pk Packaging Desc: Funnel Analytical Wht/Blk Grid47Mm 100Ml 0.45Um 50/Pack Country of Origin: US Harmonized Tariff Code: 8421.29.00 Product Description: Ready-to-use 100mL filtration units with removable cellulose nitrate membrane and culturing devices. After filtration, the membrane of the analytical funnel can be easily removed for use in a wide range of qualitative and quantitative biological analyses.