Replacement mixed bed resin cartridge for any standard RO/DI unit (also fits any Reef Crest or Puratek RO/DI Unit).
High quality color changing resin for any reverse osmosis/deionization filter unit.
- Blend of cation and anion resin
- Color change indicates usage (Blue to Brown)
- Nuclear Grade
- Can be refilled with Aqua FX DI media.