EN ISO 6271:2015
Current
The latest, up-to-date edition.
Clear liquids - Estimation of colour by the platinum-cobalt colour scale (ISO 6271:2015)
23-12-2015
European foreword
Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus and materials
5 Sampling
6 Procedure
7 Expression of results
8 Precision
9 Test report
Annex A (normative) - Platinum-cobalt colour standards
Bibliography
ISO 6271:2015 specifies a spectrophotometric method for estimating the colour of clear liquids in terms of platinum-cobalt units (Pt-Co units). It is applicable to clear liquids having a colour characteristic similar to those of the platinum-cobalt colour scale specified in Annex A. For products with colours more intense than the Pt-Co stock solution the method specified in ISO 4630 applies.The spectrophotometric method provides a more precise way of measuring Pt-Co colour than a visual sample comparison by human eyes.NOTE The term "Pt-Co colour" used here is preferred over the terms "Hazen colour" and "APHA colour".
| Committee |
CEN/TC 139
|
| DevelopmentNote |
Supersedes EN ISO 6271-1 & EN ISO 6271-2. (01/2016)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| SS-EN ISO 6271:2016 | Identical |
| PN EN ISO 6271 : 2016 | Identical |
| ISO 6271:2015 | Identical |
| DIN EN ISO 6271:2016-05 | Identical |
| NF EN ISO 6271 : 2016 | Identical |
| NS EN ISO 6271 : 2015 | Identical |
| BS EN ISO 6271:2015 | Identical |
| NBN EN ISO 6271 : 2016 | Identical |
| NEN EN ISO 6271 : 2016 | Identical |
| I.S. EN ISO 6271:2015 | Identical |
| UNE-EN ISO 6271:2016 | Identical |
| I.S. EN 16766:2017 | BIO-BASED SOLVENTS - REQUIREMENTS AND TEST METHODS |
| BS EN 16766:2017 | Bio-based solvents. Requirements and test methods |
| EN 16766:2017 | Bio-based solvents - Requirements and test methods |
| ISO 15528:2013 | Paints, varnishes and raw materials for paints and varnishes — Sampling |
| ISO 4630:2015 | Clear liquids — Estimation of colour by the Gardner colour scale |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |