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in stockReleased: 2016-09-14
UNE EN ISO 6271:2016
Clear liquids - Estimation of colour by the platinum-cobalt colour scale (ISO 6271:2015)
Líquidos transparentes. Evaluación del color mediante la escala platino-cobalto. (ISO 6271:2015).
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| Standard number: | UNE EN ISO 6271:2016 |
| Pages: | 14 |
| Released: | 2016-09-14 |
| Status: | Standard |
DESCRIPTION
UNE EN ISO 6271:2016
ISO 6271 specifies a spectrophotometric method for estimating the colour of clear liquids in terms of 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 intensively than the Pt-Co stock solution the ISO 4630 method is recommended. 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 .