Concept
Nephelometric Turbidity Units
URI | http://vocab.nerc.ac.uk/collection/P06/current/USTU/ | ||
---|---|---|---|
Within Vocab | BODC-approved data storage units | ||
Alternative Labels | NTU | ||
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 | 2018-04-16T12:05:57 | ||
Identifier | SDN:P06::USTU | ||
Note | accepted | ||
Has Current Version | 3 | ||
Version | 1 , 2 | ||
version | 3 | ||
Same As | QUDT concepts | http://qudt.org/vocab/unit/NTU | Mapping: 392050 |
Broader | P24:DIMLESS |
[dimensionless] | Mapping: 348523 |
Related | R03:TURBIDITY |
seawater turbidity | Mapping: 1602036 |
A05:EV_POM |
Suspended particulates | Mapping: 865268 | |
P09:TUR4 |
TURBIDITY | Mapping: 151827 | |
P01 BODC Parameter Usage Vocabulary - (13) |
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