ISO 10524-4:2008 applies to the types of low-pressure regulators listed below and intended to be used with the following medical gases in the treatment, management, diagnostic evaluation and care of patients:

• oxygen;
• nitrous oxide;
• medical air;
• helium;
• carbon dioxide;
• xenon;
• specified mixtures of the gases listed above;
• air for driving surgical tools;
• nitrogen for driving surgical tools;
• oxygen-enriched air.

The types of low-pressure regulators covered by ISO 10524-4:2008 are as follows:

• low-pressure regulators intended to be connected to terminal units of medical gas pipeline systems complying with ISO 7396-1;
• low-pressure regulators with integral flow-metering devices intended to be connected to terminal units of medical gas pipeline systems complying with ISO 7396-1;
• low-pressure regulators intended to be connected to terminal units attached to pressure regulators complying with ISO 10524-1 or ISO 10524-3;
• operator-adjustable low-pressure regulators for air or nitrogen for driving surgical tools that are an integral part of a medical gas pipeline system complying with ISO 7396-1.