AMT/FY-BODBOD rapid measuring instrument, using microbial electrode method, can quickly determine the BOD value of water sample, and the operation is simple and accurate. At present, the measurement of BOD generally adopts the "five-day biochemical oxygen demand (B0D5) standard dilution method", the operation is more complicated, the technical requirements of the operator is high, and the time is long, which brings a lot of inconvenience to the sewage treatment and environmental detection. The time required for detecting a single sample is about 20 minutes, and it is widely applicable to the detection of BOD in surface water, groundwater, drinking water, pharmaceutical industry wastewater and industrial wastewater that does not contain obvious toxic effects on microorganisms. AMT/FXY-BOD type BOD rapid tester (hereinafter referred to as the instrument), using microbial electrode method, can quickly determine the BOD value of water samples, and easy to operate, accurate measurement. The time required for detecting a single sample is about 20 minutes, and it is widely used in the detection of BOD in surface water, groundwater, drinking water, pharmaceutical industry wastewater and industrial wastewater that does not contain obvious toxic effects on microorganisms. The method conforms to the "Rapid Determination of Biochemical Oxygen Demand (BOD) in Water Quality by microbial Sensor" (Hchuan T86-2002), and is listed as A Class A method in the "Methods for Detection and Analysis of Water and Wastewater" (fourth edition) published in 2002.