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EVS-EN ISO 4628-2:2016

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)

General information

Valid from 02.03.2016
Base Documents
ISO 4628-2:2016; EN ISO 4628-2:2016
Directives or regulations
None

Standard history

Status
Date
Type
Name
02.03.2016
Main
10.12.2004
Main
This part of ISO 4628 specifies a method for assessing the degree of blistering of coatings by comparison
with pictorial standards.
The pictorial standards provided in this part of ISO 4628 illustrate blisters in the sizes 2, 3, 4, and 5,
and each size in the quantities (densities) 2, 3, 4, and 5.
ISO 4628-1 defines the system used for designating the quantity and size of defects and the intensity
of changes in appearance of coatings and outlines the general principles of the system. This system is
intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes
such as colour changes, for example yellowing.

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