A TDS meter, also known as a total dissolved solids meter or a conductivity meter, is a scientific instrument used to measure the concentration of dissolved solids in a solution. Dissolved solids are small particles that are suspended in a liquid, and they can include a wide range of substances, such as minerals, ions, and other compounds.
TDS meters work by measuring the electrical conductivity of a solution and converting the conductivity reading to a TDS value. The TDS value is expressed in units of milligrams per liter (mg/L) or parts per million (ppm). TDS meters consist of a pair of electrodes that are placed in the solution being tested, and an electrical current is passed between the electrodes. The resistance of the solution to the flow of electricity is measured, and the TDS value is calculated based on this resistance.
TDS meters are commonly used in a variety of applications, including water quality testing, food and beverage production, and aquaculture. They are used to measure the purity of water, the concentration of dissolved solids in a solution, and the quality of various materials. TDS meters are typically portable and easy to use, and they can provide quick and accurate TDS readings.