Lianhua Technology was one of the first companies to offer water quality testing services, starting in 1982. One of the first tested services was the Premeasured COD Vials Reagents. These vials measure the Chemical Oxygen Demand (COD) value water is. The COD value determines the amount of pollution in water. The rapid digestion spectrophotometric method we created is unprecedented in the industry. Each and every one of our vials undergoes quality testing in automated, international standard compliant, modern facilities. With… 40 years of experience, our R&D… develops refinements in product features… in water testing tea… equipment. Our compatibility vials are used in environmental monitoring, food processing, and academic research. With Lianhua, you are investing in an organization that is dedicated to the quality and protection of water. You are also investing in an organization that has been an industry leader for the past 40 years.