| http://www.w3.org/ns/prov#value | - In order to ensure that the temperature of the air/oxygen feed is maintained after being adjusted by the means for humidifying and controlling the temperature of an air/oxygen feed, both the tubing 10 and the portion of the catheter which extends from fitting 7 to the tubing 10 are covered or wrapped by a suitable insulating material such as multiple layers of a thin plastic wrap.
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