Christ Nishotech Water Systems Private Limited supplies Reverse Osmosis System. Christ Nishotech Water Systems Private Limited is the supplier of pharmaceutical water purification systems. Reverse Osmosis System is used to treat water with dissolved minerals and metals such as aluminium, arsenic, barium, cadmium, chloride, chromium, copper, fluoride, magnesium, iron, lead, manganese, mercury, nitrate, selenium, silver, sulphate, and zinc with the recovery of 85-90%.