Humidifier: An Oxygen Humidifier is a bubble-type humidifier which provides stable moisture content for maximum patient comfort during the administration of oxygen. OxygenWorldwide does not guarantee that in all cases a humidifier is supplied although the device is a non-disposable unit it might not be delivered with your equipment. The same goes for the distilled water for the humidifier. Often a humidifier container is not required by a client. The plastic containers have to ordered especially. The water can be obtained by a pharmacist and some people use by themselves boiled water.