Another solution to the problem of wasted oxygen during exhalation is the wearing of special masks with a reservoir device which stores oxygen during exhalation and releases it during inhalation. These days, large, difficult to handle cylinders are rarely supplied for oxygen needs. They can, however, provide a back-up facility in case of mechanical or power failure for those who require oxygen for 24 hours per day. Tips for using oxygen equipment For home use, oxygen is generally delivered through soft nasal prongs rather than a mask. This enables the oxygen to be used whilst eating or drinking.
Most people have no problems with nasal prongs.
Occasionally some people may notice discomfort and drying of the nasal membranes, but this can be improved by applying a water-based lubricant to the nose several times per day. Where humidification is needed it can be achieved by the use of a 'bubble bottle' containing water, through which the oxygen is bubbled. The oxygen concentrator is transportable and may be taken in the car if you are planning to be away from home for any long periods. It must remain in an upright position and may be carried in the boot if large enough, or standing up on the back seat, with a rear seat belt to hold it in place. Depending on the level of oxygen in your blood, it may not be necessary to take your concentrator if the trip is only a short one.