DI Resin for 0 TDS Deionisation Resin MediaProduct Name: Deionisation Resin Usage: Reduction of TDS Content to 0. (Demineralisation) Description: DI Resin used to reduce the TDS content to 0. Often used post reverse osmosis membrane which reduce 90%+ of the Total Dissolved Solids and then the DI resin will remove the remaining TDS to achieve a 0 TDS reading. Used were 0 TDS is important for Water Fed Pole Window Cleaning Systems , Dental Surgery Machines , Fish Keeping and all other