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Turbidity Measurement
Turbidity measures how much light suspended particles scatter in a liquid. It is a routine check on drinking water, process water and treated effluent, reported in nephelometric turbidity units.
- Unit
- NTU
- Method
- Nephelometry
- Typical samples
- water · effluent
Instruments
Recommended instruments
Method
How it is measured
01
Calibrate
Set the meter against formazin or polymer standards of known NTU.
02
Measure
Light scattered at 90° to the beam is measured by the detector.
03
Report
Scattered intensity is converted to NTU against the calibration.
Applications
Where it is measured
Questions
Frequently asked
Why is scattered light measured at 90°?
At right angles the detector sees light scattered by particles rather than the transmitted beam, which gives better sensitivity at low turbidity.
Are turbidity meters available now?
Yes, on request. Share the sample type and range and a quotation follows.
Application support
Need a turbidity meter?
Share the sample and the expected range. A quotation follows.
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