UNI EN 1557 : 1999
Current
Current
The latest, up-to-date edition.
SURFACE ACTIVE AGENTS - COLORIMETRIC CHARACTERIZATION OF OPTICALLY CLEAR COLOURED LIQUIDS (PRODUCTS) AS X, Y, Z TRISTIMULUS VALUES IN TRANSMISSION
Published date
30-11-1999
Foreword
0 Introduction
1 Scope
2 Normative references
3 Principle
4 Apparatus and reagents
5 Preparation of the test sample
6 Procedure
7 Calculation
8 Test report
Annex A (informative) Colour numbers in comparison
Annex B (informative) Bibliography
Annex C (informative) Notes on procedure
Annex D (informative) Results of a ring test of APHA-
measurements
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