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ISO 7027:1999 Water quality - Determination of turbidity

Abbreviation
ISO 7027:1999
Valid from
16/12/1999

Information provider
Standards New Zealand
Author
International Organization for Standardization
Information type
ISO Standard
Format
PDF


Description

This standard specifies four methods for the determination of the turbidity of water.

Scope

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.
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This resource is cited by:

ISO 7027:1999 Water quality - Determination of turbidity

This document is CITED BY:

ISO 7027:1999 Water quality - Determination of turbidity

Description

This standard specifies four methods for the determination of the turbidity of water.

View on Information Provider website
ISO 7027:1999 Water quality - Determination of turbidity
Description

This standard specifies four methods for the determination of the turbidity of water.

View on Information Provider website
This resource does not cite any other resources.

ISO 7027:1999 Water quality - Determination of turbidity

This resource does not CITE any other resources.
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