COD Vials Kit. CHEMetrics. Item #: 1224R28. Range: 0-15,000 ppm (HR+) Not USEPA Approved* Method: Dichromate Reactor Digestion Kit comes in a cardboard box and contains everything needed to perform up to 97 tests (except distilled water): 98 vials and instruction book with MSDS. All COD Kits require the use of a Digestor Block and the V-2000