BRS PRO Series Anion DI Resin (Color Changing)

Changes from Blue to Amber when exhausted

Anion Single Bed Color Changing DI Resin is great for people that want to be more efficient with their deionization resin usage. Single bed resins do require the use of a cation and anion resin followed by a mixed bed resin, but produce much better results and are much more efficient! 

Cation or Anion

Cation = Positive Charge

Anion = Negative Charge

Choosing a single or mixed bed resin can be hard especially if you do not know exactly what is in your water or how a RO membrane will filter it. In most cases, you can use either the cation or anion mixed bed resins but may notice that a TDS meter is showing that the resin is exhausted before the color has changed completely. That is more than likely due to an excess of the opposite type of ion in your water when compared to the color changing dye used in that resin. If this is happening to you, changing to a resin with an opposite indicating dye of your current will help with visual monitoring as it becomes exhausted.