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sklademVydáno: 2019-02-26
BS EN ISO 7027-2:2019
Water quality. Determination of turbidity Semi-quantitative methods for the assessment of transparency of waters
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| Označení normy: | BS EN ISO 7027-2:2019 |
| Počet stran: | 20 |
| Vydáno: | 2019-02-26 |
| ISBN: | 978 0 580 94570 0 |
| Status: | Standard |
DESCRIPTION
BS EN ISO 7027-2:2019
This standard BS EN ISO 7027-2:2019 Water quality. Determination of turbidity is classified in these ICS categories:
- 13.060.60 Examination of physical properties of water
This document specifies the following semi-quantitative methods for the assessment of transparency of waters:
measurement of visual range using the transparency testing tube (applicable to transparent and slightly cloudy water), see Clause 4;
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;
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.