COD Test Kit Ranges and Accessories The determination of Chemical Oxygen Demand (COD) is widely used in municipal and industrial laboratories to measure the overall level of organic contamination in waste water. The contamination level is determined by measuring the amount of oxidant required to oxidize the organic matter in the sample. This is equivalent to amount of oxgyen used up by the contaminated water during natural decay. CHEMetrics offers two types of vial for the determination of COD in waste water, USEPA Approved and Mercury Free.
Product Range MDL Cat.
No. USEPA-Approved Dichromate Reactor Digestion Method Reagent Vials (25) 0-150 ppm 10 ppm K-7350S Reagent Vials (150) 0-150 ppm 10 ppm K-7355 Reagent Vials (25) 0-1500 ppm 30 ppm K-7360S Reagent Vials (150) 0-1500 ppm 30 ppm K-7365 Reagent Vials (25) 0-15,000 ppm 300 ppm K-7370S Reagent Vials (100) 0-15,000 ppm 300 ppm K-7375 Mercury-Free Dichromate Reactor Digestion Method Reagent Vials (25) 0-150 ppm 10 ppm K-7351S Reagent Vials (150) 0-150 ppm 10 ppm K-7356 Reagent Vials (25) 0-1500 ppm 30 ppm K-7361S Reagent Vials (150) 0-1500 ppm 30 ppm K-7366 Reagent Vials (25) 0-15,000 ppm 300 ppm K-7371S Reagent Vials (100) 0-15,000 ppm 300 ppm K-7376 Accessories Calibration Standard, 1000
ppm A-7301 Calibration Standard,
10,000 ppm A-7310 COD Photometer (low range)* 0-150 ppm A-7320 COD Photometer (high
range)* 0-1500 & 0-15,000 ppm A-7325 Digestor (120/240 V – 25
cells) A-0111 Vial Rack (holds 40) A-0107
Instrumental Colorimetric Analysis
To perform the test, the analyst simply removes the Teflon-lined cap from the vial, adds the sample to the vial, and replaces the cap. The vial is then heated for 2 hours at 150C in a standard digestor block. Once digestion is complete, the reading is obtained photometrically. Our COD vials can be used with our either our two dedicated COD photometers, the V-2000 Multi-Analyte Photometer, or with any instrument that accepts 16 mm sample cells. Contact us to confirm compatibility if you already possess a spectrophotometer, photometer or colorimeter. The COD Photometer and V-2000 are depicted below.
We also offer a disposal service. Details are available upon request.
A full list of our COD products and accessories is provided below.