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This document specifies the following semi-quantitative methods for the assessment of transparency of waters:

a) measurement of visual range using the transparency testing tube (applicable to transparent and slightly cloudy water), see Clause 4;

b) measurement of visual range in the upper water layers using the transparency testing disc (especially applicable to surface, bathing water, waste water and often used in marine monitoring), see 5.1;

c) measurement of visibility by divers in a destined depth, see 5.2.

NOTE The quantitative methods using optical turbidimeters or nephelometers are described in ISO 7027-1.


General information

  • Status :  Published
    Publication date : 2019-01
  • Edition : 1
    Number of pages : 12
  • Technical Committee
    :
    ISO/TC 147/SC 2
    Physical, chemical and biochemical methods
  • ICS :
    13.060.60
    Examination of physical properties of water

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