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BS EN ISO 4628-7 : 2016

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BS EN ISO 4628-7 : 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 7: ASSESSMENT OF DEGREE OF CHALKING BY VELVET METHOD

British Standards Institution

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Table of Contents

Foreword<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Principle<br>5 Materials<br>6 Assessment<br>7 Test report<br>Bibliography

Abstract

Defines a method suitable, in particular, for rating the degree of chalking on white or coloured exterior coatings and coating systems on rough surfaces (i.e. those having a roughness greater than segment 4 of the reference comparator G as described in ISO 8503-1).

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Document Type Standard
Status Current
Publisher British Standards Institution
Committee STI/10
Supersedes
  • BS 3900-H7(2003) : 2003
  • 97/120367 DC : DRAFT FEB 1997
  • 14/30301174 DC : 0