TDS, or Total Dissolved Solids, refers to the measurement of all inorganic and organic substances suspended in a liquid, such as water. It represents the total amount of solids, both visible and invisible, that are dissolved in a solution.
TDS is typically expressed in parts per million (ppm) or milligrams per liter (mg/L). This includes salts, minerals, metals, ions, and various other dissolved particles present in the liquid. These substances can originate from natural sources, such as minerals leaching from rocks and soil, or from human activities, such as industrial processes or the addition of chemicals.
Measuring TDS is essential in various fields including water quality assessment, environmental science, and hydrology. It helps determine the purity and usability of water, as excessive levels of dissolved solids can affect taste, appearance, and potentially pose health risks. High TDS levels can indicate contamination or the presence of harmful substances, making it crucial for monitoring drinking water supplies and evaluating their compliance with regulatory standards.
Different methods are employed to measure TDS, including using portable meters or conductance sensors that assess the electrical conductivity of the liquid. These devices calculate TDS based on the principle that dissolved solids increase the conductivity of water. While TDS is a valuable parameter in assessing water safety, it should be used alongside other tests to have a comprehensive understanding of water quality.
