Which of the following are units of measuring turbidity?

A. Jackson Turbidity Unit
B. Darcy Turbidity Unit
C. Nephelometric Turbidity Unit
D. Fermi Turbidity Unit
E. Formazin Turbidity Unit

Choose the correct answer from the options given below:

Correct option is B

Turbidity is a measure of the cloudiness or haziness of a fluid caused by suspended particles. Several units are used to quantify turbidity:

Jackson Turbidity Unit (JTU): One of the earliest units used to measure turbidity, based on visual comparison of a sample to a standard solution.

Nephelometric Turbidity Unit (NTU): A modern and widely used unit based on measuring scattered light at a 90-degree angle using a nephelometer.

Formazin Turbidity Unit: Formazin is a chemical standard used to calibrate turbidity instruments, and turbidity is often expressed in terms of Formazin Nephelometric Units (FNU).

Other options:

Darcy Turbidity Unit and Fermi Turbidity Unit are not recognized or standard units of turbidity measurement.

Hence, the correct answer is A, C, and E only.

Information Booster:

Turbidity affects water quality and can influence disinfection effectiveness and aquatic life.

JTU is an older unit but still referenced in some contexts.

NTU is the standard unit used worldwide for regulatory purposes.

Formazin is the standard reference suspension used to calibrate turbidity meters.

Accurate turbidity measurement is crucial in water treatment plants and environmental monitoring.

Nephelometers measure scattered light intensity, which correlates to turbidity levels.