ISO 7027-2:2019 Preview
Water quality -- Determination of turbidity -- Part 2: Semi-quantitative methods for the assessment of transparency of waters
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
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Status : PublishedPublication date : 2019-01
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Edition : 1Number of pages : 12
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- ICS :
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Examination of physical properties of water
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Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
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Previously
ISO 7027:1999
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Now
ISO 7027-2:2019
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