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ČSN P CEN/TS 16498 (672015)
Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of tannin staining
Automatically translated name:
Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of stains caused by tannic acid (standard for direct use as CSN).
STANDARD published on 1.3.2016
The information about the standard:
Designation standards: ČSN P CEN/TS 16498
Classification mark: 672015
Catalog number: 98979
Publication date standards: 1.3.2016
SKU: NS-632500
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Annotation of standard text ČSN P CEN/TS 16498 (672015):
This Technical Specification specifies a test method for assessing the discoloration of coatings on wood by tannin staining due to wood extractives. The method uses an extract from Merbau wood as an indicator. Bleeding of wood extractives is assessed at two specified stages firstly after coating application and secondly after cyclic climate exposure. A qualification of colour differences that can be attributed to three different causes, bleeding of extractives, low opacity of the coating film or general yellowing in climate exposure, is included. This document does not specify acceptance values for colour differences that can be tolerated and it is not applicable to staining caused by knots for which there is a different test method (e. g. CEN/TS 16359)
Preview of the standard ČSN P CEN/TS 16498 (672015)
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