ISO 9170-1:2008 applies to:
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)]
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.
It is intended especially to ensure the gas-specific assembly of terminal units and to prevent their interchange between different gases and services.
ISO 9170-1:2008 specifies requirements for terminal units for supply and disposal of nitrogen or air for driving surgical tools and requirements for probes intended to be connected to the gas-specific connection point which is part of the terminal unit.