NF EN ISO 7027

July 2017

Standard Cancelled

Water quality - Determination of turbidity

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Main informations

Collections

National standards and national normative documents

Publication date

July 2017

Release date

mars 2019

Number of pages

24 p.

Reference

NF EN ISO 7027

ICS Codes

13.060.60 Examination of physical properties of water

Print number

1 - décembre 2002

International kinship

ISO 7027:1999

European kinship

EN ISO 7027:1999

Standard replaced by (1)

NF EN ISO 7027-2

February 2019

Standard Current

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.

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