PWP DI Cartridge with Resin - 10 Inch

PWP DI Cartridge with Resin - 10 Inch OVERVIEW: The Pure Water Power DI Cartridge with Resin - 10 Inch comes pre-loaded with quality virgin resin and is ready to use right out of the box. This replacement cartridge is refillable and non-proprietary, making it easy to change out the resin. When TDS readings go above ten ppm, it's time for a resin change. Resin color will vary.