The cartridges can come supplied already filled with resin or can be left empty.
Water Softening
- Water Softening resins are used to reduce the TDS (polishing the water). The TDS from a RO unit is not always as low as needed so the usage of this resin will bring the TDS down to near 0 TDS. We only use a high quality resin as this gives a high consistent performance for a longer time.