Turbidity is a principal physical characteristic of water. Suspended matter or impurities cause it by interfering with the clarity of the water. These include clay silt finely divided inorganic and organic matter soluble coloured organic compounds and plankton and other microscopic organisms. Turbidity is the measure of relative clarity of a liquid. Clarity is required for drinking water and in manufacturing uses. This AQUASOL AE300 - TURBIDITY TEST KIT is simple and adequate. It has been designed for onsite use. It suffices its purpose and helps regular monitoring.