Understanding Turbidity Testing: What Does It Measure?

Turbidity testing is a common method used in various industries to measure the clarity of a liquid. It is an important parameter to monitor in water treatment plants, breweries, wineries, and other facilities where the quality of the liquid is crucial. But what exactly does a turbidity test measure?


Turbidity is the cloudiness or haziness of a liquid caused by suspended particles that are invisible to the naked eye. These particles can include sediment, silt, clay, algae, and other organic and inorganic matter. Turbidity can affect the appearance of the liquid, as well as its taste, odor, and overall quality. Therefore, measuring turbidity is essential to ensure that the liquid meets certain standards and is safe for consumption or use.

A turbidity test measures the amount of light that is scattered or absorbed by the suspended particles in a liquid. The test is typically performed using a turbidimeter, which is a device that shines a light through a sample of the liquid and measures the intensity of the light that passes through. The more particles there are in the liquid, the more light will be scattered or absorbed, resulting in a higher turbidity reading.

Turbidity is usually expressed in nephelometric turbidity units (NTU) or formazin nephelometric units (FNU), which are standardized units of measurement for turbidity. The higher the NTU or FNU reading, the cloudier the liquid is and the more suspended particles it contains. In general, turbidity Levels below 1 NTU are considered low, while levels above 5 NTU are considered high.

Turbidity testing is important for several reasons. In water treatment plants, for example, high turbidity levels can indicate the presence of contaminants such as bacteria, viruses, and parasites that can cause waterborne diseases. By monitoring turbidity levels, operators can ensure that the water is properly treated and safe for consumption.

ROC-2315 RO controller instruction (220V)
Model ROC-2315
Single detection Dry Contact input Raw water no water protection
(six channels) Low-pressure protection
\u3000 High-pressure protection
\u3000 Pure water tank high\u00a0level
\u3000 External control mode signal
\u3000 Running reset
Control port Dry Contact output Raw water pump SPST-NO low capacity : AC220V/3A Max ;AC110V/5A Max
(five channels) Inlet valve \u3000
\u3000 High pressure pump \u3000
\u3000 Flush valve \u3000
\u3000 Conductivity over-limit drainge valve \u3000
Measurement detection point Product water conductivity and with Automatic Temperature compensation (0\uff5e50\uff09\u2103
Measurement range Conductivity : 0.1~200\u03bcS/cm/1~2000\u03bcS/cm/10~999\u03bcS/cm (with different conductivity sensor )
Product water temp. : 0~50\u2103
Accuracy 1.5 level
Power supply AC220V (\u00b110%)\u00a0,\u00a050/60Hz
Working Environment Temperature:\uff080\uff5e50\uff09\u2103\u00a0;
Relative Humidity :\u226485%RH\u00a0(no condensation )
Dimension 96\u00d796\u00d7130mm( height \u00d7width\u00d7depth)
Hole size 91\u00d791mm\uff08height \u00d7width\uff09
Installation Panel mounted ,fast installtion
Certification CE

In breweries and wineries, turbidity testing is used to monitor the clarity of the liquid during the production process. Excessive turbidity can affect the appearance and flavor of the final product, so it is important to control and adjust turbidity levels as needed.

Turbidity testing is also used in environmental monitoring to assess the impact of human activities on natural water bodies. High turbidity levels in rivers, lakes, and oceans can be caused by runoff from construction sites, Agriculture, and other sources of pollution. By measuring turbidity, scientists can track changes in water quality over time and take steps to protect the environment.

Overall, turbidity testing is a valuable tool for ensuring the quality and Safety of liquids in various industries. By measuring the clarity of a liquid and monitoring turbidity levels, operators can detect and address potential issues before they become a problem. Whether it’s ensuring clean Drinking Water, producing high-quality Beverages, or protecting the environment, turbidity testing plays a crucial role in maintaining the integrity of liquids and the health of consumers.