The Pentek BN-420-100 100 micron filter bags are 70-80% efficient, The Pentek BN-420-100 Nylon Monofilament Filter Bags should be used with water with a ph range of 6-9, Pentek BN-420-100 Nylon Monofilament bags are compatible with a broad range of corrosive fluids including organic solvents, oils, acids, alkalis and microorganisms, The BN-420-100 Nylon Monofilament Filter Bags can withstand temperatures up to 200F (93, 3C), The Pentek BN-420-100 bag filter is made of woven monofilament materials, The Pentek BN Series Bag Filters are offered in nylon with micron ratings of 50-800 microns, Depending on your water supply, the Pentek BN-420-100 Filter Bags can be cleaned and reused (although not indefinitely), SKU: CWD2436