Anti-Scaling Cartridge (PolyP), 4/PK is designed to prevent development of large CaCO3 or MgCO3 crystals by disturbing their growth, thereby protecting RO membranes in lab water systems from scaling and attack by hard salt precipitates. Purification Technologies:  Polyphosphate for anti-scaling protection Suitable for: 10 inch Prefiltration Kit (three-stage) 10 inch Prefiltration Kit (two-stage) Order Information: Description Catalog No. Anti-Scaling Cartridge