If you’re an analyst testing for chemical oxygen demand, you have a choice. CHEMetrics’ USEPA-approved COD tests integrate easily with your current procedures and instruments. Best of all, we offer savings up to 35% over competitor products. Note that analysts conducting competitor and CHEMetrics COD tests engage in the exact same procedure using the same equipment. In both cases, tests begin with preparation of a reagent blank, then the analyst pipettes 2 milliliters of sample into a separate vial. Both vials are place in a digestor preheated to 150 degrees. After two hours, all vials are removed and inverted, then placed in a rack and covered to cool for at least 30 minutes. Using the same spectrophotometer, the analyst’s results are the same for both samples. Again, CHEMetrics USEPA approved COD kits are materially equivalent to competitors and up to 35% less expensive. CHEMetrics: for simplicity and value in water analysis.