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ISO 6271

Clear liquids - Estimation of colour by the platinum-cobalt colour scale

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Organization: ISO
Publication Date: 1 December 2015
Status: active
Page Count: 12
ICS Code (Binders): 87.060.20
scope:

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".

Document History

ISO 6271
December 1, 2015
Clear liquids - Estimation of colour by the platinum-cobalt colour scale
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...
August 1, 1997
Clear Liquids - Estimation of Colour by the Platinum-Cobalt Scale
A description is not available for this item.
January 1, 1981
Clear Liquids - Estimation of Colour by the Platinum-Cobalt Scale
A description is not available for this item.

References

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