AirLife Bubble Humidifier Bottle The AirLife® Bubble humidifier helps prevent drying out of mucous membranes in your nose and mouth, when used with the SimplyGo Portable Oxygen Concentrator. One of the best features is that these 370mL-capacity units have an audible-alarm pressure relief valve to warn patients of obstructions to flow. This 6 PSI model is designed for all applications, including use where longer lengths of tubing can increase back pressure. The jar and lid are constructed of break-resistant plastic, humidifiers also feature a durable plastic flow-meter nut. Use this Humidifier Bottle along with the SimplyGo Humidifier Pouch Features: For use with Oxygen Flows from 2 to 12 LPM Preset audible alarm at 6 PSI pressure relief Disposable, durable plastic Durable plastic flow-meter nut Holds 370 ml water to fill line Included in the Package: (1) AirLife® Bubble Humidifier Bottle (1) Product Manual Optional Accessories: AirLife® Adult Cannula with 7ft Tubing Standard Oxygen Supply Tubing Connector Disposable Oxygen Tubing 25 Ft. or 50 Ft. CPAP Mask Cleaning Wipes