This instrument is based on the principle of firefly luminescence and uses the "luciferase luciferin system" to quickly detect the content of adenosine triphosphate (ATP) in samples. Due to the constant amount of ATP present in all living cells, ATP content can clearly indicate the residual amount of microorganisms and other organisms in the sample, which is used to assess hygiene conditions. This instrument has the characteristics of simple operation, fast detection speed, high sensitivity, and easy portability. It can be used in various industries such as food, medical and health, pharmaceuticals, daily chemical products, papermaking, industrial water treatment, national defense, environmental protection, customs entry and exit quarantine, etc.