Čiré kapaliny - Hodnocení barev pomocí platino-kobaltové barevné stupnice (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.7.2016
Designation standards: ČSN EN ISO 6271
Classification mark: 673026
Catalog number: 99856
Publication date standards: 1.7.2016
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
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