Universal Bubble Humidifier w/ Pressure Relief Valve

Safe and reliable humidification: Provides dependable, cost-effective humidification with a 3 PSI safety valve and an audible pop-off pressure alarm to warn of any obstructions to oxygen flow. Increased humidity output: Unique 360° molded diffuser ports at the bottom of the internal humidifier tube increase overall humidity and reduce noise during use. User-friendly design: Large, permanently etched maximum/minimum water level markings on the transparent bottle and an easy-to-grip quad wing nut connector for convenience. Universal Compatibility: Compatible with all oxygen concentrators. Easy to clean: Use sterile distilled water to reduce the possibility of contamination and scaling. Clean the bottle every 7 days with mild soap and water and rinse thoroughly.