DIN EN ISO 7887:2012-04
Water quality - Examination and determination of colour (ISO 7887:2011); German version EN ISO 7887:2011
| Fecha edición: |
2012-04-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | This International Standard 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 C and D are appropriate if the colour hue of the sample differs from the hue of the matching solution. |
| Keywords: | Chemical analysis and testing|Colour|Colour tests|Definitions|Determination|Dyeing|Examination of sludge|Examination of waste water|Impurities|Inspection|Investigations|Parameters|Physical|Sampling methods|Sewage|Sludge|Standard methods|Test equipment|Testing|Turbidity|Visual|Water|Water analysis|Water quality|Water testing |
| ICS: | 13.060.60 - Determinación de las propiedades físicas del agua |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 7887:2011 Idéntica ISO 7887:2011 |
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Reemplazo Normas |
Reemplaza a DIN EN ISO 7887:1994-12 Reemplaza a DIN EN ISO 7887:2009-04 |
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