Water Vapour Transmission Tester

首页 » Water Vapour Transmission Tester

The PVA/4 is designed for preparation of test pieces for the Accurate measurement of the WVTR - Water Vapour Transmission Rate – of sheeted materials like paper, board, plastics, aluminum, rubber, etc.

The WVTR is the mass of water vapour transmitted through a unit area in a unit time under specified conditions of temperature and humidity.  Usually indicated in grams per square meter per day g/(m .d) the WVTR is a key characteristic used to specificate sheet materials in the packaging industry.