These are the Gravidyn filters that remove chemicals and pollution in addition to filtering out bacteria, protozoa and cysts. BUY THREE AND SAVE!
Microporous, silver-incorporated ceramic filters out particles, all harmful bacteria and parasites such as Cryptosporidium and Giardia. Essential minerals remain in the water. The high performance activated carbon removes unpleasant taste and odor such as chlorine and hazardous chemicals. Replace according to measuring gauge or every 6 months, whichever is sooner.
Please note: For health and safety reasons, water filters are NOT returnable. This item is an exception to our normal 30-day return policy. Please be sure you want this model and filter before you buy.