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NS 4787:2002 PDF

NS 4787:2002 PDF

Name:
NS 4787:2002 PDF

Published Date:
12/06/2002

Status:
Active

Description:

Water quality — Determination of colour — Method by spectrophotometric determination of absorbans at 410 nm

Publisher:
Standards Norway NS Series

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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Denne standarden beskriver en spektrofotometrisk metode for bestemmelse av farge på naturlig vann og drikkevann. Metoden er ikke beregnet på avløpsvann. Farge målt med denne metoden oppgis som fargeenheter. Resultatene vil typisk ligge i området mellom 0 og 100 fargeenheter, men høyere verdier forekommer. Ved bruk av kyvetter med egnet lysvei kan metoden brukes for alle fargeverdier som forekommer i naturlig vann. Bare sann farge kan bestemmes. En enklere, visuell metode, som også kan brukes til bestemmelse av tilsynelatende farge, er beskrevet i NS-EN ISO 7887, punkt 4. NS-EN ISO 7887, punkt 3, beskriver en spektrofotometrisk metode for bestemmelse av farge som ikke refererer til platinaskalaen. MERKNAD: Andre synonyme enheter som brukes for farge, er mg l-1 Pt, Hazen-enheter og TCU (true colour units).
Number of Pages : 12
Published : 12/06/2002

History

NS 4787:2002
NS 4787:2002
Published Date: 12/06/2002
Water quality — Determination of colour — Method by spectrophotometric determination of absorbans at 410 nm
NS 4787:1988
NS 4787:1988
Published Date: 02/01/1988
Water analysis — Determination of colour — Spectrophotometric method
NS 4786:1988
NS 4786:1988
Published Date: 02/01/1988
Water analysis — Determination of colour number — Comparator method
NS 4722:1973
NS 4722:1973
Published Date: 09/01/1973
Water analysis — Determination of colour

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