Which device is used to measure NTU's in water?

The device used to measure NTU (Nephelometric Turbidity Units) in water is a nephelometer. This instrument assesses the turbidity of water by using a light source and a detector. When light is directed through a water sample, particulate matter scatters the light, and the degree of scattering is measured. The greater the turbidity, indicated by higher NTU values, correlates with a higher level of suspended particles in the water. Nephelometers provide accurate and real-time measurements, making them essential in water quality testing and management.

Colorimeters, pH meters, and conductivity meters serve different purposes: colorimeters measure color intensity, pH meters measure acidity or alkalinity, and conductivity meters assess the ion concentration in water. Each of these devices is specialized for its respective measurement, reinforcing the distinct role of the nephelometer in turbidity assessment.