McIntyre J W, Purdell-Lewis J G
Can Anaesth Soc J. 1981 Mar;28(2):174-7. doi: 10.1007/BF03007264.
An empty British Oxygen Company (B.O.C.) Mk. 4 carbon dioxide absorption cannister was modified for use as a vaporizer by placing a layer of flannelette bandage over the horizontal perforated septum and adding a base plate with an exit port for anaesthetic vapour. Aliquots of liquid anaesthetic were injected from a syringe through the top of the cannister and vaporised by air drawn through the cannister. Laboratory testing showed that this could be a useful way of administering inhalational anaesthesia in the absence of compressed gas supply.