A 60 percent oxygen supply for medical use.
A supply of 60% oxygen with 40% nitrogen should be acceptable for most clinical purposes, since usually only low dosages of oxygen are required. The gas may be provided by means of an oxygen concentrator (Rimer-Birlec), which is a compact, transportable, electrically operated apparatus capable of providing 28 l./min. (1 cu. ft./min.) of 60% oxygen from a source of compressed air. The biological effect of the gas from the device is the same as that of 60% oxygen from a conventional source. Measurements of inspired oxygen concentration show that the 60% oxygen may be used with present-day oxygen masks to provide inspired oxygen concentrations in the range 25 to 40%; for higher inspired concentrations alternative equipment is likely to be required. The concentrator appears to be a practical source of oxygen for expeditions and out-of-the-way places. It may provide an economical supply for a ward block, and with further development should be a convenient source of 30% oxygen for domiciliary use.
D000328:Adult; D000388:Air; D000538:Aluminum Silicates; D002118:Calcium; D006801:Humans; D008397:Masks; D010100:Oxygen / Q000032:analysis; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*
D000538:Aluminum Silicates; D010100:Oxygen; D002118:Calcium
N Engl J Med. 1967 Feb 16;276(7):368-74
6017244
Fed Proc. 1963 Jul-Aug;22:1053-6
14046277
Br Med J. 1967 Sep 2;3(5565):593-6
20791351