Shelf life: stored under proper conditions, an unopened Purifier Cartridge has a shelf life of 10 years. After a cartridge has been used, it lasts at least three additional years.
Active technology: Inside the purifier cartridge, non-woven ceramic fibers block and trap microorganisms and particulates with a very high electropositive charge, removing submicron contaminants through electroadsorption. Ultra-powdered activated carbon adsorbs chemicals, heavy metals, bad flavors and odors.
Testing Standards: independently tested by a certified laboratory to meet or exceed NSF/ANSI protocol 42 and 53 for pathogen and chemical removal; meets the the United States Environmental Protection Agency's Guide Standard and Protocol for testing microbiological water purifiers
Origin: designed in USA, made in China; purifier media made in USA