ISO 7783:2011 PDF

Scope: This International Standard specifies a method for determining the water-vapour transmission properties of coatings of paints, varnishes and related products. It supplements ISO 12572. As far as possible, the procedure, the definitions and the calculations have been taken over from ISO 12572. It is recommended that ISO 12572 be consulted, if necessary, to obtain a better understanding of the procedure specified in this International Standard. Water-vapour transmission rates of more than 680 g/(m2 d) (i.e. water-vapour diffusion-equivalent air layer thicknesses, d, of less than 0,03 m) will not be accurately quantified by the test method described in this International Standard.

ISO 7783:2011 Referenced Document

ISO 1513:2010 Paints and varnishes - Examination and preparation of test samples
ISO 15528:2000 Paints, varnishes and raw materials for paints and varnishes - Sampling
ISO 2808:2007 Paints and varnishes - Determination of film thickness
ISO 3233:1998 Paints and varnishes - Determination of percentage volume of non-volatile matter by measuring the density of a dried coating
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods

2018 ISO 7783:2018 Paints and varnishes - Determination of water-vapour transmission properties - Cup method
2011 ISO 7783:2011 Paints and varnishes - Determination of water-vapour transmission properties - Cup method