PH Post Filters for Reverse Osmosis System

PH Post Filters for Reverse Osmosis System

Regular price $29.00 Sale

Hydronix Inline Alkaline/ORP filter

Raises pH of RO water

Designed for prolonged contact by being connected directly to the outlet of the membrane

Capacity - 2,000 Gallons

Size - 2.5" x 12"

Fittings- 1/4" FNPT

Maximum Flow - .5 GPM

The filter contains a blend of media: D300 Alkalizing Bio Tablets, D600 anti-oxidant mineral spheres, bio ceramic alkalizer, ORP mineral stone and mineral stones, in addition to pads at entrance and exit of the filter.

The filter re-mineralizes and raises the pH of your purified water by at least 1 to 2 points. By adding this inline filter to a reverse osmosis (RO) system, you get the optimum benefit of the alkaline-mineral-ORP media: a higher pH, higher mineral content, and lower ORP.


Waterite - Increasing Mineral AIC-10M

Re-mineralization is a process in which the water after passing through the RO membrane is stabilized with addition of minerals accomplished by use of lime or limestone media filter.

The mineral composition of limestone is highly variable depending upon the quarry location.

 Excelpure Inline Filter, Mineral Stone 10", 1/4 FPT

4.5x10" cartridge

Change yearly

Fittings not included

Cartridge may not be exactly as shown


This Pentek GS-10CAL/RO-B Inline Filter Cartridge Replacement is a 10" combination in-line filter composed of coconut shell granular activated carbon (GAC) and calcite. It can be utilized in various applications to correct low pH levels, polish water, brew better tasting coffee, tea, or other beverages (or in numerous other food service applications), as a post filter in many reverse osmosis systems, and more. It reduces the bad taste and odor of chlorine as well as sediment and increases the pH level of water via the re-mineralization of soft, acidic, or low pH water - calcite is a natural mineral which dissolves in acidic water to raise its pH to neutral.

The Pentek GS-10CAL/ROB Inline Filter has 1/4" female pipe thread connections (1/4" FPT) and can be utilized in all inline filter applications which use that specific connection fitting.

Pentek GS-10CAL/RO-B GAC Calcite Filter Replacement Specifications:

  • Max. Pressure: 125 PSI
  • Temp. Range: 40 - 100 F
  • Micron Rating: 20 microns
  • Dimensions: 10" length x 2" diameter
  • Connection: 1/4" Female Pipe Threads (1/4" FPT)
  • Flow Rate: About 1 gallon per minute (1 GPM) @ 125 PSI
  • Filter Media: Coconut shell granular activated carbon block with calcite
  • Filter Life: Approx. 3-6 months depending on local water quality and frequency of use or approx. 1 year if used after the membrane in a reverse osmosis system