Ion Exchange [India] Ltd supplies Fully Automatic Unique Water Vending Machine. Ion Exchange [India] Ltd. Is ISO 9001:2000 certified. Fully Automatic Unique Water Vending Machine has multistage purification process based on membrane technology and ionization. It delivers pure drinking water in chilled and non-chilled options and dispenses in units of 300 ml, 1litre and 5 litres. The Fully Automatic Unique Water Vending Machine is housed in aesthetically designed front locking and backlit options. There is unique display screen indicating total water dispensed volume. Fully Automatic Unique Water Vending Machine has a flow rate of 3-4 ltr/min.