What is the formula for measuring turbidity?

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http://en.wikipedia.org/wiki/Turbidity

Thanks, but I already knew about this.

The formula for measuring turbidity is not a singular formula, but rather a method using various instruments and techniques. Turbidity refers to the degree to which the water loses its transparency due to the presence of suspended particles, such as clay, silt, and organic matter. It is typically quantified using the nephelometric turbidity unit (NTU) or formazin nephelometric unit (FNU), which are standardized units for measuring turbidity.

To measure turbidity, you will need a turbidimeter or a nephelometer. These instruments work based on the principle of light scattering or absorption by suspended particles in the water. Here's a simplified step-by-step explanation of how to measure turbidity using a turbidimeter:

1. Calibrate the turbidimeter: Start by calibrating the turbidimeter using a standard turbidity solution of known value. This ensures accurate and consistent readings.

2. Fill a sample cell: Take a clean, transparent sample cell and fill it with the water you want to measure. Make sure there are no air bubbles or debris in the cell.

3. Insert the sample cell: Insert the filled sample cell into the turbidimeter, ensuring proper alignment with the light source and the detector.

4. Reading the measurement: The turbidimeter will emit light into the sample cell, and the scattered or absorbed light by the suspended particles will be detected. The turbidimeter will convert this detected light into a turbidity reading in NTU or FNU.

It's important to note that the specific steps and calibration process might vary depending on the turbidimeter model and manufacturer's instructions. It's advisable to carefully follow the instructions provided with your specific turbidimeter to obtain accurate and reliable measurements.