APEC Water Essence series FILTER-MAX-ESPH is for ROES-PH751st to 3rd stage pre-filters removes dust, particles, rust, chlorine, taste and odor4th stage high rejection 75 GPD TFC reverse osmosis membrane removes a wide range of contaminants5th stage standard capacity coconut shell carbon filter removes any last residuals6th stage 10 inch high purity US made PH+ alkaline calcium carbonate inline filters with 1/4" quick connect
