Paints and varnishes. Evaluation of degradation of coatings. Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Assessment of degree of chalking by tape method Ingestion-build-239834 crude or modified isocyanates derived

crude or modified isocyanates derived from toluene diisocyanate

Recommendations for flushing and disinfection have been revised to link more closely with the revised HSE ACOP L8 and HSG274 Part 2

This test is used to measure the modulus of elasticity and 0

dimensions and production methods employed will affect elongation as will the gauge length used to measure that elongation

elastic properties

Paints and varnishes. Evaluation of degradation of coatings. Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Assessment of degree of chalking by tape method Ingestion-build-239834 crude or modified isocyanates derived1 Scope 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.