A conductivity meter is a device used to measure the electrical conductivity of a solution, which indicates how well the solution can conduct electricity. This measurement is important in various fields, including environmental monitoring, agriculture, and water quality testing. The conductivity is influenced by the presence of ions in the solution, such as salts and minerals. These meters typically consist of two electrodes that are immersed in the solution. When an electrical current passes between the electrodes, the meter calculates the conductivity based on the current flow. Conductivity meters can provide real-time readings and are essential tools for assessing the quality of water in aquatic ecosystems and hydroponic systems.