Geigerrig Virus Filter: Replacement Cartridge 2Pack: G4 130R<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>2 replacement cartridges for the Geigerrig virus filter.</li><li>Consistently removes protozoan cysts， bacteria， and virus to ANSI/NSF Standard 52， and US EPA standards without the use of disinfecting chemicals such as chlorine， bromine， or iodine.</li><li>Suppresses the growth of bacteria， algae， fungus， mold and mildew within the filter media.</li><li>100 gallons of filtration per cartridge. Depends on the amount of sediment in the water.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/410-SJWfUrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31wxXKKwP%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51tlXH7j3XL.jpg" noproxy>