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<p>This document describes general test methods for determining the water vapour transmission rate of sheet materials by means of a dynamic gas method or a static gas method. Depending on the method and specific apparatus employed, materials up to 38 mm thick and with water vapour transmission rates in the range from 0,05 g/(m<sup>2</sup>·d) to 65 g/(m<sup>2</sup>·d) can be tested. The basis of the function of the instrumental techniques is briefly described. Advice on calibration is given in Annex B.</p>
Reģistrācijas numurs (WIID)
80315
Darbības sfēra
<p>This document describes general test methods for determining the water vapour transmission rate of sheet materials by means of a dynamic gas method or a static gas method. Depending on the method and specific apparatus employed, materials up to 38 mm thick and with water vapour transmission rates in the range from 0,05 g/(m<sup>2</sup>·d) to 65 g/(m<sup>2</sup>·d) can be tested. The basis of the function of the instrumental techniques is briefly described. Advice on calibration is given in Annex B.</p>
