Active standard | Published: 18/01/2019

ISO 7027-2:2019

Water quality — Determination of turbidity — Part 2: Semi-quantitative methods for the assessment of transparency of waters
(Qualité de l´eau — Détermination de la turbidité — Partie 2: Méthodes semi-quantitatives pour l´évaluation de la transparence des eaux)

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Detail information

Designation: ISO 7027-2:2019

Publication date: 18/01/2019

Pages: 12

Country: International technical standard

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Anotation

Description / Abstract: 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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