Phosphate cartridges are also available in combination with coconut shell GAC

Height : Standard 20 " x 2

✔ STAGE 2 : Catalytic Carbon*

Displays TDS levels of the three sensing points with electrode probes

Auto-ranging three point calibration with digital fine tuning

Membrane Housing UPGRADE Phosphate cartridges are also availableMembrane Housing Membrane housing. Fits all 1812 membranes with an o ringed male product tube. Most all of the generic membranes are a knock off of the early FilmTec design. The only time this housing may not work for you is with BIG NAME BRAND products. You are just stuck paying their extremely high prices.