1.1 This part of ISO 9170 applies to:
a) terminal units intended for use in medical gas pipeline systems in accordance with ISO 7396-1, for use with the following medical gases:
-- oxygen;
-- nitrous oxide;
-- medical air;
-- carbon dioxide;
-- oxygen/nitrous oxide mixture [50 %/50 % (by volume)];
b) terminal units intended for use in medical gas pipeline systems in accordance with ISO 7396-1, for use with the following gases and services:
-- oxygen-enriched air;
-- air for driving surgical tools;
-- nitrogen for driving surgical tools;
-- vacuum.