1)Oxygen Humidifier 2)6 Psi Pressure Relief, 3)Disposable. 4)Latex Free using purpose:Oxygen Bubble Humidifiers are used to provide humidified oxygen to patients both in hospital or at home.Feasure:Single Patient UseClear Container enables visual inspection of water levelSafety Pressure Valve automatically opened at 6psi humidifier,6 PSI