Intelligent ammonia nitrogen tester 5B-6D(V8)，Parameter water quality tester, COD rapid tester, BOD tester, ammonia nitrogen tester, total nitrogen tester, total phosphorus tester, digester, digester, residual chlorine tester, dissolved oxygen tester, turbidity tester, suspended matter tester, ion meter oil meter, manganese method COD tester, water quality pollutant tester, heavy metal tester, soil tester, specialized accessories, laboratory consumables，Model：5B-3C，5B-3C（V8），LH-COD2M（V11），LH-CP3M，5B-3F（V10），5B-3C，5B-3A，LH-CM3H