Carrello della spesa (0)
Standard

SN EN ISO 7887:2012

Attuale
Anteprima

Le modifiche e le versioni esistenti o nuove devono essere acquistate separatamente.

Lingua
Servizi

Astratto

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 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 t

Specifiche dei prodotti

  • Standard da INB
  • Pubblicato:
  • Efficace:
  • Tipo di documento: EN
  • Pagine
  • ICS 13.060.60
  • Publisher SNV
  • Distributor SNV
  • National Committee INB/NK 107

Relazioni con i prodotti