Reference number
ISO 7887:2011
© ISO 2025
International Standard
ISO 7887:2011
Water quality — Examination and determination of colour
Edition 3
2011-12
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недоступно на русском языке
Опубликовано (Версия 3, 2011)
Последний раз этот публикация был пересмотрен в  2022. Поэтому данная версия остается актуальной.

ISO 7887:2011

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Тезис

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.

Общая информация

  • Текущий статус
     : Опубликовано
    Дата публикации
     : 2011-12
    Этап
    : Подтверждение действия международного стандарта [90.93]
  • Версия
     : 3
  • Технический комитет :
    ISO/TC 147/SC 2
    ICS :
    13.060.60 
  • RSS обновления

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