Agent-specific filling devices. An evaluation of two prototypes

Two prototype agent-specific devices have been tested and neither in its present form is ideal. Filling of vaporisers may be delegated to inexperienced persons but the devices tested do not ensure that vaporisers can only be filled with the correct agent. Significant atmospheric pollution with the volatile anaesthetic agent may occur at the time of filling. At present, the devices are limited to three agents, enflurane, halothane and methoxyflurane.