2. Measuring principle
Of the various ways of measuring water turbidity, two of the most widely used are nephelometry (measurement of the intensity of incident light scattered at an angle of 90° to the incident light) and opacimetry (measurement of the attenuation of incident radiation), which are also standardized.
2.1 Scattered light
Nephelometry is the name given to the photometric measurement of particle concentration in water by 90° scattering (also known as nephelometry). Nephelometers are...
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Measuring principle
Calibration and turbidity units
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