International Standard ISO 8835-2:1999 has been adopted with Canadian
deviations as CSA Standard CAN/CSA-Z8835-2-01. 1 Scope This part of ISO 8835 specifies requirements for inhalational anaesthetic
breathing systems for adults which are supplied either assembled by the
manufacturer or for assembly by the user in accordance with the manufacturer's
instructions. It also covers circle absorber assemblies, exhaust valves,
inspiratory and expiratory valves and, in some designs, those parts of an
anaesthetic breathing system that are incorporated within an anaesthetic
workstation, including the expiratory gas pathway of an anaesthetic ventilator
and any parts of a non-operator-detachable anaesthetic-gas scavenging system
(AGSS). This part of ISO 8835 does not cover the performance of breathing systems
regarding the elimination of expired carbon dioxide, since this is complex and
depends on the interaction of the patient, the fresh-gas flow, the carbon
dioxide absorbent and the breathing system itself.