Before this article must be warned. He is not worth the money that you require. The "filtered" water is behind dirtier than before. The cartridges were shipped in no original packaging, but in a used and damaged carton. You are each in a plastic bag, but the manufacturer can not be seen. When you open the plastic bag, the sand trickles one from the cartridge counter already. All this is not the case with original filter cartridges from Brita. The shape of the offer I feel led me astray, I have retrieved the money.