3rd Edition, December 1, 2015
Clear liquids - Estimation of colour by the platinum-cobalt colour scale
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Description / Abstract:
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.