The Hudson RCI® Disposable Humidifier features a unique diffuser designed to provide patients with comfortable, therapeutic humidity and minimal noise. Disposable, durable plastic with preset audible alarm in 2 options, either 4 or 6 psi pressure relief. 6 psi model allows the use of longer lengths of oxygen tubing without the audible alarm sounding. Diffuser designed to provide patient with comfortable, therapeutic humidity and minimal noise. 500 mL usable volume. Defined maximum and minimum water level lines. Recessed nipple reduces possibility of breaking off outlet connection. Individually packaged.