GreenTech Enviromental PREFILTER CARTRIDGE PureWash Prefilter System Cartridge Feature: Replacement Prefilter Cartridge for model # PREFILTER KIT. In order for your PureWash to perform most effectively, water quality issues must be addressed. Installing a pre-filter is recommended to treat mild water quality issues, as unfiltered impurities in the water supply can potentially interact with the oxidizers produced by PureWash thereby hindering your PureWash's performance. Our pre-filter is a 2-stage KDF 55 and Granular Activated Carbon filter. This filter covers most water quality issues such as high chlorine content and high iron content.
