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EVS-EN ISO 7027-2:2019

Water quality - Determination of turbidity - Part 2: Semi-quantitative methods for the assessment of transparency of waters (ISO 7027-2:2019)

General information

Valid from 17.06.2019
Base Documents
EN ISO 7027-2:2019; ISO 7027-2:2019
Directives or regulations
None

Standard history

Status
Date
Type
Name
17.06.2019
Main
01.07.2000
Main
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.

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