March 10, 2016
The International Organization for Standardization (ISO) has published ISO 4624:2016 Paints and varnishes -- Pull-off test for adhesion, revising ISO 4624:2002.
ISO 4624:2016 specifies three methods (i.e. one dolly or two dollies on a painted panel and two dollies, one as painted substrate) for determining the adhesion by carrying out a pull-off test on a single coating or a multi-coat system of paint, varnish or related product.
These test methods have been found to be useful in comparing the adhesion behavior of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.