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A TDS (Total Dissolved Solids) meter is a handheld device used to measure the concentration of dissolved solids in a liquid. It provides a quick and convenient way to assess the overall water quality by detecting the total amount of inorganic salts, minerals, metals, and other dissolved substances present in the water. Here's a brief description of how a TDS meter works and its main features: Function: TDS meters work on the principle of electrical conductivity. When submerged in a liquid, the meter's probe allows a small electric current to pass through the water. The conductivity of the water is directly proportional to the concentration of dissolved ions and solids present in the liquid. Measurement Units: TDS is commonly measured in parts per million (ppm) or milligrams per liter (mg/L). These units indicate the amount of dissolved solids per million units of water. Display: TDS meters usually have a digital display that shows the measured TDS value. Some advanced models may also display temperature and other relevant information. Calibration: Many TDS meters can be calibrated to ensure accurate readings. Calibration involves setting the meter to a known standard solution with a known TDS value. Applications: TDS meters are widely used in various industries and applications, including water quality testing, hydroponics, aquaculture, aquarium maintenance, and pool maintenance. They are also commonly used by homeowners to check the quality of their tap water or to monitor water filtration systems. Maintenance: TDS meters are relatively simple to use and require minimal maintenance. Regularly cleaning the probe and storing the meter in a safe place when not in use will help ensure accurate and reliable readings. Remember, while TDS meters provide valuable information about the overall water quality, they do not offer a detailed breakdown of specific dissolved substances. For more comprehensive water testing, additional specialized equipment and laboratory analysis may be necessary.