ISO 7887:2011
p
ISO 7887:2011
46425
недоступно на русском языке

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 

  •  :  Published
     : 2011-12
  •  : 3
  •  : ISO/TC 147/SC 2 Physical, chemical and biochemical methods
  •  :
    13.060.60 Examination of physical properties of water

Приобрести данный стандарт

ru
Формат Язык
std 1 92 PDF
std 2 92 Бумажный
  • CHF92

Жизненный цикл


Появились вопросы?

Ознакомьтесь с FAQ

Работа с клиентами
+41 22 749 08 88

Часы работы:
Понедельник – пятница: 09:00-12:00, 14:00-17:00 (UTC+1)

Будьте в курсе актуальных новостей ИСО

Подписывайтесь на наши новости, обзоры, а также на информацию о продуктах.