ISO 6271:2015
Current
The latest, up-to-date edition.
Clear liquids — Estimation of colour by the platinum-cobalt colour scale
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30-11-2015
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 |
ISO/TC 35
|
| DevelopmentNote |
Supersedes ISO/DIS 6271, ISO 6271-1 & ISO 6271-2. (12/2015)
|
| DocumentType |
Standard
|
| Pages |
6
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| IS 1448 : Part 178:2020 | Identical |
| NF EN ISO 6271 : 2016 | Identical |
| NBN EN ISO 6271 : 2016 | Identical |
| NEN EN ISO 6271 : 2016 | Identical |
| NS EN ISO 6271 : 2015 | Identical |
| I.S. EN ISO 6271:2015 | Identical |
| PN EN ISO 6271 : 2016 | Identical |
| BS EN ISO 6271:2015 | Identical |
| EN ISO 6271:2015 | Identical |
| DIN EN ISO 6271:2016-05 | Identical |
| UNE-EN ISO 6271:2016 | Identical |
| UNE 55706:1984 | Identical |
| DIN ISO 6271:1999-01 | Identical |
| BS 6782-12:1997 | Identical |
| DIN ISO 6271 E : 1999 | Identical |
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