Reverse Osmosis and Water Filters from Osmotics Ltd reverse osmosis system, ro system, reverse osmosis unit, ro unit, ro system, ro water filter, ro filter, ro water system, rodi system, drinking water, filters, water filtration, aquarium reverse osmosis, aquarium ro system, drinking water, john guest, hm digital, deionisation, deionization, di unit, tds meter, tds meters, hydroponics, hydroponic growing, hydroponic systems Assembled in the UK, our Reverse Osmosis Systems and Water Filters can remove harmful viruses, pathogenic bacteria, cysts, parasites, and chemical contaminants from water …