<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="abcb-glossentry" ?><abcb-glossentry xmlns:xt="urn:xpressauthor:trackchanges" id="_6865163b-ba99-4d48-9e9b-a76b4641be1c" outputclass="abcb-glossentry"><glossterm id="_a8b17dfe-243d-477e-9d64-add1432fcdb4">Vapour permeance</glossterm><glossdef outputclass="glossdef"><p>The degree that water vapour is able to diffuse through a material, measured in µg/N.s and tested in accordance with the ASTM-E96 Procedure B – Water Method at 23°C 50% relative humidity.</p></glossdef></abcb-glossentry>