This part of ISO 7783 specifies a method for the de-termination of the water-vapour transmission rate of an unsupported film of paint, varnish or related prod-uct. The test method is applicable to the transmission of water vapour in either direction through a paint film.
note: 2) This term is often confused with permeability or permeance, which have distinct definitions (see note 9 in subclause 11.3).
ISO 7783-1:1996 history
1998ISO 7783-1:1996/Cor 1:1998 Paints and varnishes - Determination of water-vapour transmission rate - Part 1: Dish method for free films; Technical Corrigendum 1
1996ISO 7783-1:1996 Paints and varnishes - Determination of water-vapour transmission rate - Part 1: Dish method for free films