The German Institute for Standardization (DIN) has issued the following standards relating to paints and varnishes:
| STANDARD NUMBER | TITLE | ABSTRACT |
|---|---|---|
| DIN EN ISO 4628-1 | Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 1: General introduction and designation system (ISO 4628-1: 2016); German version EN ISO 4628-1: 2016 | This part of ISO 4628 specifies a system for assessing the quantity and size of defects on coated surfaces as well as the intensity of changes in the appearance of coatings resistant and contains the foundations of the system of standard ISO 4628. |
| DIN EN ISO 4628-2 | Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering (ISO 4628-2: 2016); German version EN ISO 4628-2: 2016 | This part of ISO 4628 specifies a method for evaluating the degree of blistering of coatings determined by comparison with images. The images in this part of ISO 4628 show bubbles of sizes 2, 3, 4 and 5 and for these sizes of bubbles amounts (densities) 2, 3, 4 and 5. |
| DIN EN ISO 4628-3 | Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-3: 2016); German version EN ISO 4628-3: 2016 | This part of ISO 4628 specifies a method for evaluating the rust stage of coatings determined by comparison with images. The images in this part of ISO 4628 show coatings on steel, which have different degree of damage, both rust breakthroughs and visible creepage. |
The standards are available in both German and English.