click to buy- http://www.snapdeal.com/product/kent-uf-gravity-water-purifier/83835 apply coupon USD962BA99 WQA, USA - Gold Seal Certified Economical model 10 litres storage - Optimum for a small family No chemicals like Chlorine, Bromine or Iodine used for purification thereby providing healthier and tastier drinking water. Transparent tank made of unbreakable food-grade plastic. Long life membrane (expected to last upto 4000 litres). Use of Activated Carbon for better disinfection of water. Ideal for entry level water purifier Purification by Hollow Fiber Ultra Filtration Membrane (UF Membrane) removes bacteria as well as cysts Better than boiled water and uses no electricity, no chemicals and removes cyst as well