Adopts ISO5631-3:2015, which specifies a method for measuring the colour of paper and board by the diffuse reflectance method with the elimination of specular gloss.
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1
5.1.2
5.1.3
5.2
5.2.1
5.2.2
5.3
5.3.1
5.3.2
5.4
6 Sampling and conditioning
7 Preparation of test pieces
8 Procedure
8.1
8.2
8.3
9 Calculation
9.1 CIE tristimulus values
9.2 CIELAB coordinates
9.3 Dispersion of the results
10 Expression of results
11 Precision
12 Test report
Annex A
A.1 Filter reflectometers
A.2 Abridged spectrophotometers
A.2.1 General
A.2.2 Procedure for using data without bandpass correction
A.2.3 Procedure for using data with bandpass correction
