P'URE AquaCalcium Reverse Osmosis System Product Price :- { £399 } Product Description :- { AquaCalcium filter 6 stages of water purification 7 litre pressure tank for drinking water 12 litres of pure drinking water per hour Fits under the sink Replacement filter set £92 Replacement RO membrane £62 } https://www.aquasoftuk.com/product/aquacalcium