Concept
Nephelometric Turbidity Units
| URI | http://vocab.nerc.ac.uk/collection/P06/current/USTU/2/ | |
|---|---|---|
| Within Vocab | BODC-approved data storage units | |
| Alternative Labels | ||
| Definition | Standardised scale for nephelometric measurement of turbidity calibrated against formazine solutions of different concentration and measured using a white light source at a 90 degree detection angle. Earlier measurements of turbidity tended to use NTU (sometimes also labelled STU or FTU) as the unit regardless of the measurement method. | |
| Date | None | |
| Identifier | USTU | |
| Note | accepted | |
| Is Version Of | USTU | |
| version | 2 | |
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