PUR 2-Stage Faucet Filter Replacement Cartridge - RF 3375 (1 pack).. For use with all PUR faucet filtering systems, this replacement cartridge works on your tap water in 2 stages. First, it reduces sediment, making it cleaner. Second, it reduces lead, mercury, cryptosporidium, giardia and industrial pollutants, making it healthier. Life of cartridge: up to 2-3 months/100 gallons. Faucet system sol
