Status : Published (Under review)

This standard was last reviewed and confirmed in 2021. Therefore this version remains current.
Format Language
PDF
Paper
  • CHF42
Convert Swiss francs (CHF) to your currency

Abstract



ISO 6271:2015 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".

Standard first page

Read sample 

Preview this standard in our Online Browsing Platform (OBP)

General information

  • Status
     : Published
    Publication date
     : 2015-12
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 3
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 35
    ICS :
    87.060.20 
  • RSS updates

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. TC
  5. ISO/TC 35
  6. ISO 6271:2015