ISO 6271-2:2004
Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 2: Spectrophotometric method
- Standard No.
- ISO 6271-2:2004
- Release Date
- 2004
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 6271-2:2004
- Scope
- This part of ISO 6271 specifies a spectrophotometric method for estimating the colour, in Pt-Co units, of clear liquids. It is applicable to clear liquids having a colour characteristic similar to those of the reference platinum-cobalt scale specified in ISO 6271-1. The method described provides a more precise way of measuring Pt-Co colour than that described in ISO 6271-1. NOTE The term "platinum-cobalt colour (Pt-Co colour)" used here is preferred over the terms "Hazen colour" and "APHA colour".
ISO 6271-2:2004 history
- 2004 ISO 6271-2:2004 Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 2: Spectrophotometric method
