International Standard
ISO 7887:2011
Water quality — Examination and determination of colour
Reference number
ISO 7887:2011
Edición 3
2011-12
International Standard
Vista previa
ISO 7887:2011
46425
No disponible en español
Publicado (Edición 3, 2011)
Esta norma se revisó y confirmó por última vez en 2022. Por lo tanto, esta versión es la actual.

ISO 7887:2011

ISO 7887:2011
46425
Idioma
Formato
CHF 96
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Resumen

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, λ = 410 nm. A subclause on interferences is included.

Method D involves determination of colour by visual comparison with hexachloroplatinate standard solutions and can be applied to raw and drinking water. A subclause on interferences is included.

Methods A and B are appropriate if the colour hue of the sample differs from the hue of the matching solution.

When stating the result, the procedure used (methods A to D) is also recorded.

Informaciones generales

  •  : Publicado
     : 2011-12
    : Norma Internacional confirmada [90.93]
  •  : 3
     : 15
  • ISO/TC 147/SC 2
    13.060.60 
  • RSS actualizaciones

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