RO
SR EN ISO 7887:2012
Water quality - Examination and determination of colour (ISO 7887:2011)
ISO 7887:2011 specifies four different methods, designated A to D, for the examination of colour. The previously most employed method for assessment of water colour in water treatment plants, limnological surveys, etc. was based on the hexachloroplatinate scale. Methods C and D are harmonized with this traditional procedure. Method A involves examination of apparent colour by visually observing a water sample in a bottle. This gives only preliminary information, for example for use in field work. Only the apparent colour can be reported. Method B involves determination of the true colour of a water sample using optical apparatus and is applicable to raw and potable water and to industrial water of low colour. A subclause on interferences is included. Method C involves determination of the true colour of a water sample using optical apparatus for comparison with hexachloroplatinate concentration at wavelength, ? = 410 nm. A subclause on interferences is included. Method D involves determination of colour by visual comparison with hexachloroplatinate standard solutions and can b
Status :
Valid
Approval date : 5/31/2012
Number of pages : 22
ICS : 13.060.60 Examination of physical properties of water
Technical Committee : 52 - Water quality
- Replaces SR EN ISO 7887:2002
- Normative reference SR EN ISO 5667-3:2013
- Normative reference SR EN ISO 10523:2012
- Normative reference SR EN ISO 3696:2002