This digitally controlled Direct-Flow Reverse Osmosis (RO) system provides an excellent alternative to a water still or deioniser and produces deionised quality water economically and efficiently. Water is supplied to the unit by simply tapping into a standard tap-water supply pipe, using the kit provided and the electrical supply is via a standard 3-pin plug and lead (included). Tap water enters the unit and passes through a series of carbon pre-filters, followed by a reverse osmosis (RO) membrane, finally passing through a resin deioniser to produce laboratory grade purified deionised water. Designed for laboratory and medical use, this is a direct-flow RO system, which does not require a water storage tank.