Since 1982, Lianhua Technology has been a pioneer in the water quality testing sector. We have developed innovative methods in rapid digestion spectrophotometric testing for Chemical Oxygen Demand (COD). Our COD analyzers, guaranteed for any environment, deliver top quality and precision. FIELD, LAB, OR ANY DEMANDING SITUATION! Our COD analyzers provide guaranteed precision and quality for any environment--field, laboratory, or any quality demanding situation. 30 WATER QUALITY INDICATORS! We protect water quality. We trust this fosters reliability.