The cartridge contains the sieve beds used to convert normal air into air with high oxygen concentration
These Cartridges have a limited lifespan and will need to be replaced over time depending on oxygen settings, usage, and environmental conditions, such as high elevation or dry climates. Only replace the cartridge when necessary, your X-PLOR will alert you when it is time. Keep the Cartridge in the sealed Mylar bag until installation, and once inserted, leave it in place until replacement is required