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Norm
ÖNORM EN ISO 7027
Issue date: 2000 05 01
Water quality - Determination of turbidity (ISO 7027:1999)
This International Standard specifies four methods for the determination of turbidity of water. Two semiquantitative methods, employed for example in field work, are spec...
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Withdrawn
: 2019 06 15
Publisher:
Austrian Standards International
Format:
Digital | 11 Pages
Language:
German
| English
| Download GER/ENG
Currently valid:
Optionally co-design standards:
ICS
This International Standard specifies four methods for the determination of turbidity of water. Two semiquantitative methods, employed for example in field work, are specified:
a) measurement of turbidity using the transparency testing tube (applicable to pure and lightly polluted water);
b) measurement of turbidity using the transparency testing disk (especially applicable to surface water).
Two quantitative methods, using optical turbidimeters, are specified:
c) measurement of diffuse radiation, applicable to water of low turbidity (for example drinking water);
Turbidity measured by this method is expressed in formazin nephelometric units (FNU); results typically range
between 0 FNU and 40 FNU. Depending on the instrument design, it may also be applicable to waters of higher turbidity.
d) measurement of the attenuation of a radiant flux, more applicable to highly turbid waters (for example waste or polluted waters).
Turbidity measured by this method is expressed in formazin attenuation units (FAU); results typically range between 40 FAU and 4000 FAU.
ÖNORM EN ISO 7027-2
2019 06 15
Water quality - Determination of turbidity - Part 2: Semi-quantitative methods for the assessment of...
Norm
ÖNORM EN ISO 7027-1
2016 10 15
Water quality - Determination of turbidity - Part 1: Quantitative methods (ISO 7027-1:2016)
Norm
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ÖNORM EN ISO 5667-3
Issue date :
2007 09 01
Water quality - Sampling - Part 3: Guidance on the preservation and handling of water samples (ISO 5667-3:2003) (consolidated version)
Norm
ISO 5667-3:1994
Issue date :
1994 07 28
Water quality — Sampling — Part 3: Guidance on the preservation and handling of samples
Norm
ÖNORM EN ISO 7027-1
Issue date :
2016 10 15
Water quality - Determination of turbidity - Part 1: Quantitative methods (ISO 7027-1:2016)
Norm
ÖNORM EN ISO 7027-2
Issue date :
2019 06 15
Water quality - Determination of turbidity - Part 2: Semi-quantitative methods for the assessment of transparency of waters (ISO 7027-2:2019)