Used to filter impurities in tap water but I bought two packs and unfortunately the second pack was defective. The internal charcoal filter kept coming out in the water jug which shouldn't be so I should be entitled to half the purchase price as only one filter worked and I threw away the broken one so it wouldn't be returned But as I've had this item for at least six months I still have to refund or replace the time I sent without commission but it's ok I just bought four packs and if I have the same problem I will take photos and send the goods back, thanks
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