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Nephelometric Turbidity (TUR)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: tur.ttl

Name
nephelometricTurbidity
Datatype
Real
Definition
The cloudiness or haziness of a volume of solution as determined by its degree of light scattering.
Description
Turbidity is caused by suspended solids that are generally invisible to the naked eye, for example: suspended clay, silt, organic and inorganic matter, and plankton and other microorganisms. The units of turbidity from a calibrated nephelometer (based on the scattering of a focused beam of light) are called Nephelometric Turbidity Units (NTU).
Accepted
2013-10-18
Defined by
DFDD
Physical quantity
pureNumber
Recommended unit
Unitless
Used by

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.