25 litres of hard water blend resin.

For use with the WTS1 25 Litre DI system on trolley or WTS2 25 Litre DI system on trolley, or use half on your 12.5 Litre DI system and half later! Resin will keep if left sealed in a cool, dry place.

Change your resin and carbon filter when the TDS reading is no longer 0 and you’re noticing spotting on the windows.