The RapidPureA(R) POD Gravity Purifier Refill Cartridge gives you the power to remove over 99.99% of viruses, bacteria, parasites, and more. This replacement refill cartridge works with the RapidPureA(R) 9L Gravity Purifier System. Each refill cartridge purifies up to 200 gallons of water. Compatible with this product: 9L Gravity Purifier SystemLooking for a replacement cartridge for our other products? Get the POD Purifier Refill Cartridge