I.S. EN 1557:1997
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
Hardcopy , PDF
English
01-01-1997
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
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
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.