BOD Meter is a benchtop unit designed to automatically measure B.O.D. (biological oxygen demand) with 0 to 4000 mg/ L measurement range. Simple and safe mercury pressure difference measurement method is applied to prevent poisoning caused by the leakage of the mercury column. Equipped with high end brand mini thermal printer, quickly prints measurement process data, result data. Automatically saves test data on power failure and executes experimental process once power supply is on.