Hudson Aquapak® prefilled humidifiers combine an easy-to-use adaptor with a choice of two sterile water reservoir bottles. The humidifier adaptor incorporates an audible alarm that alerts the clinician to flow restriction or occlusion of the humidifier or oxygen tubing. The reservoir bottles have a built-in oxygen tubing connector with an easy snap-off trigger design. A micro-diffuser, moulded into the reservoir bottle, produces smaller bubbles and increases surface aera agitation allowing for noise-free humidification. Hudson Aquapak® prefilled humidifiers provide performance, safety and value. The complete set with its insufflation adaptor facilitates handling.