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Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, a…

Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, a…

Overview ISO 4628-7:2016 - Paints and varnishes - Assessment of degree of chalking by velvet method - specifies a visual/physical test for chalking (formation of loosely adherent powder) on exterior…