HOW TO USE IT: Just pour Snugell CPAP distilled water into humidifier chamber as directed by device manufacturer. MULTIPURPOSE DISTILLED WATER - can be used in CPAP devices, humidifiers, facial steamers, nasal cleansing pots, and for general cosmetic cleaning purposes. MADE IN USA - proudly distilled in the USA, Snugell CPAP Distilled Water is thoroughly steam-filtered, and processed through UV and Ozonation. UP TO 12 DAYS SUPPLY - each 20oz bottle in our 6-pack comes in the perfect size for two full nights of use in the CPAP humidifier chamber - as recommended by respiratory therapists; and its conveniently sized for travel use while away from home. HELPS PROLONG THE LIFE OF CPAP MACHINE - keeps humidifier chamber clean of bacteria and free of mineral deposits.