The OmniPure XF934 All C249 water softening cartridge uses strongly acidic C 249 cation exchange resin to remove hardness from water up to 1060 grains. The XF-934 fits standard size 10 inch housings that allow for 3 inch diameter filters. Also known as part number C100E.
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Flush 5 gallons of water through new cartridge for before using water. Filter life based on water quality and usage.