MIXED BED DE MINERALIZES TDS = 0 In Mixed Bed resin System, cations and anions are mixed evenly and put into a single pressurized filter tubes. .. Performance mixed bed system is equivalent to the performance of the filter tube 2 demin anions with a series of multi stage. The resulting water quality so that it can achieve the TDS = 0 even though more efficient in purifying the incoming feedwater, mixed bed system is more sensitive to impurities in the water supply and the regeneration process involves more rum