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ISO 7027-2:2019

Water quality — Determination of turbidity — Part 2: Semi-quantitative methods for the assessment of transparency of waters

Publication date:   Jan 18, 2019

General information

90.93 Standard confirmed   Jul 2, 2024

ISO

ISO/TC 147/SC 2 Physical, chemical and biochemical methods

International Standard

13.060.60   Examination of physical properties of water

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 7027:1999

NOW

PUBLISHED
ISO 7027-2:2019
90.93 Standard confirmed
Jul 2, 2024