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EVS-EN ISO 6271:2015

Clear liquids - Estimation of colour by the platinum-cobalt colour scale (ISO 6271:2015)

General information

Valid from 05.01.2016
Base Documents
EN ISO 6271:2015; ISO 6271:2015
ICS Groups
17.180.20 Colours and measurement of light 87.060.20 Binders
Directives or regulations
None

Standard history

Status
Date
Type
Name
05.01.2016
Main
EVS-EN ISO 6271:2015
09.02.2005
Main
EVS-EN ISO 6271-1:2005
09.02.2005
Main
EVS-EN ISO 6271-2:2005
This International Standard 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”.

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Standard monitoring
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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English