BS EN ISO 7027-2:2019
$102.76
Water quality. Determination of turbidity – Semi-quantitative methods for the assessment of transparency of waters
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 20 |
This document specifies the following semi-quantitative methods for the assessment of transparency of waters:
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measurement of visual range using the transparency testing tube (applicable to transparent and slightly cloudy water), see Clause 4;
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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;
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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.
