ASTM F2668-16

4.1 This practice can be used for the evaluation of the physiological response of a user to protective clothing ensembles worn under controlled conditions.

4.2 This practice establishes general procedures for the physiological evaluation based on the physiological measurement of core temperature, mean skin temperature, heart rate, exposure time, oxygen consumption, and whole body sweat rate.

4.3 Departures from the instructions in this practice may lead to significantly different test results. Technical knowledge concerning thermoregulatory responses, physiological and environmental temperature measurement, and testing practices is needed to evaluate which departures from the instructions given in this practice are significant. All departures must be reported with the results.

1.1 This practice specifies the test equipment and procedures for determining the physiological responses of subjects wearing a protective clothing ensemble.

1.2 This practice covers the physiological measurement of internal body core temperature, skin temperature, exposure time, heart rate response, oxygen consumption, and whole body sweat rate, to assess the physiological responses of subjects wearing a protective clothing ensemble. This practice does not measure the musculoskeletal strain on the participant imposed by the protective clothing ensemble.

1.3 The present standard does not attempt to determine important clothing characteristics, such as thermal insulation and evaporative resistance of the protective clothing ensemble. Test Methods F1291 and F2370 can be used for these clothing measurements.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 It is the responsibility of the test laboratory to obtain the necessary and appropriate approval(s) required by their institution for conducting tests using human participants.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user, and the testing institution, to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use of this standard.