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Pentek® pH Stabilizing Calcite/Carbon Inline Water Filter w/ 3/8" John Guest Fittings

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  In Stock
  •   Model # GS-10CAL-RO-H
  •   Part # 255546-43
  •   Brand Pentek
NSF 42 Certified

This inline post filter is designed to dissolve calcite into your reverse osmosis water to correct low pH created by the RO process. The filter uses a combination of granular activated carbon & calcite to act as a post filter and neutralize low pH.

This top quality cartridge is made by Pentek, the largest brand in the filtration industry and is NSF Certified.

Model Maximum Dimensions Port Size Connection Type Chlorine Capacity @ Flow*
GS-10CAL/RO-B 10" × 2" 1/4" FNTP >1,000 grains @ 1.0 GPM
GS-10CAL/RO-H 10" × 2" 3/8" John Guest >1,000 grains @ 1.0 GPM

* Based on manufacturer's internal testing.

Pentek ph Stabilizing Inline Cutaway Diagram

John Guest Fittings

John Guest Fittings for this unit are available below or your existing fittings can be reused if they are removable.