This International Standard defines physical quantities and other termsin the field of mass transfer relevantto buildings, building elements andsystems, building components andbuilding materials. For physicalquantities the standard also givesthe corresponding symbols andunits.
EN ISO 9346:2007 history
2007EN ISO 9346:2007 Hygrothermal performance of buildings and building materials - Physical quantities for mass transfer - Vocabulary (ISO 9346:2007)
1996EN ISO 9346:1996 Thermal Insulation - Mass Transfer - Physical Quantities and Definitions (ISO 9346 : 1987)