PAINTS AND VARNISHES - EVALUATION OF
DEGRADATION OF COATINGS - DESIGNATION
OF QUANTITY AND SIZE OF DEFECTS, AND OF
INTENSITY OF UNIFORM CHANGES IN
APPEARANCE - PART H6: ASSESSMENT OF
DEGREE OF CHALKING BY TAPE METHOD
(ISO 4628-6:2007, IDT)
This part of ISO 4628 provides pictorial reference standards for designating the degree of chalking of paint
coatings. It also describes a method by which the degree of chalking is rated. In using this method, it is
essential that care be taken to distinguish between true degradation products and adhering dirt, particularly
when chalking is slight.
