Developed by Labsun with the integration of cutting-edge domestic and international instrument manufacturing technologies, the COD automatic online water quality analyzer is a new-generation fully automatic online water quality monitoring instrument independently researched and developed. It adopts the national standard detection principle of Potassium Dichromate Digestion Spectrophotometry and dual optical path detection technology. The instrument can rapidly, accurately, conveniently and cost-effectively measure the COD concentration in various water bodies, fully complying with the latest technical requirements for national surface water automatic analytical instruments.