The Purify O3 Elite unit produces ozone by passing an electrical discharge through ambient (dry) air cycled through the machine. This process creates ozone, an unstable gas and potent oxidant capable of killing bacteria and germs. The ozone is then released into the travel/sanitizing bag or enclosed container, where it binds with bacteria to achieve up to 99.99% disinfection. Ozone naturally decomposes into oxygen, fully dispersing within 1.5 hours of its production.