This standard sets forth recommended practices and procedures for the measurement and calculation of moist air properties in order to promote accurate measurement methods for specific use in the preparation of other ASHRAF standards.

This standard recommends procedures for measurement of moist air properties in connection with (a) the establishment of the desired moist air environment for tests of heating, refrigerating, humidifying, dehumidifying, and other air-conditioning equipment; and (b) the determination of the quantity of moisture in airstreams moving through or within such equipment or spaces.