CHEMetrics Chemical Oxygen Demand (COD) Vials
Chemical oxygen demand is a measure of the oxidizable organic matter content of a wastewater sample. The sample is reacted with an acidic solution of potassium dichromate in the presence of a catalyst (silver) and digested for 2 hours at a temperature of 150°C. Oxidizable organic compounds reduce the dichromate ion (Cr2O7²-) to the chromic ion (Cr3+).
In the Low Range (LR) COD kits, the decrease in dichromate ion is measured colormetrically. In the High Range (HR) and High Range+ (HR+) COD kits, the amount of chromic ion products is measured. The test results are expressed ad the number of milligrams of oxygen consumed per liter of sample (mg/Liter COD).
All COD Kits require the use of a Digestor Block and the V-2000 Photometer, an A-7320 COD Photometer, or a spectrophotometer capable of accepting a 16 mm round cell. Photometers sold separately.
| Item No. | Product Description | Method/Chemistry | Range | Unit of Measure | Your Cost | Purchase |
|---|---|---|---|---|---|---|
|
COD 0-150 mg/L USEPA, 25
5052-44
|
COD LR Vial Kit; USEPA-Accepted | Dichromate Reactor Digestion | 0-150 ppm | Pack of 25 |
$41.97
|
|
|
COD 0-150 mg/L USEPA, 150
5052-45
|
COD LR Vial Kit; USEPA-Accepted | Dichromate Reactor Digestion | 0-150 ppm | Pack of 150 |
$207.90
|
|
|
COD 0-150 mg/L Hg FREE, 25
5052-46
|
COD LR Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-150 ppm | Pack of 25 |
$41.97
|
|
|
COD 0-150 mg/L Hg FREE, 150
5052-47
|
COD LR Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-150 ppm | Pack of 150 |
$207.90
|
|
|
COD 0-15,000 mg/L Hg FREE, 98
5052-55
|
COD HR+ Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-15,000 ppm | Pack of 98 |
$138.72
|
|
|
COD 0-15,000 mg/L Hg FREE, 25
5052-54
|
COD HR+ Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-15,000 ppm | Pack of 25 |
$41.97
|
|
|
COD 0 - 1500 mg/L USEPA, 25
5052-48
|
COD HR Vial Kit; USEPA-Accepted | Dichromate Reactor Digestion | 0-1500 ppm | Pack of 25 |
$41.97
|
|
|
COD 0 - 1500 mg/L USEPA, 150
5052-49
|
COD HR Vial Kit; USEPA-Accepted | Dichromate Reactor Digestion | 0-1500 ppm | Pack of 150 |
$207.90
|
|
|
COD 0 - 1500 mg/L Hg FREE, 25
5052-50
|
COD HR Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-1500 ppm | Pack of 25 |
$41.97
|
|
|
COD 0 - 1500 mg/L Hg FREE,150
5052-51
|
COD HR Vial Kit; Mercury-Free | Dichromate Reactor Digestion | 0-1500 ppm | Pack of 150 |
$207.90
|
|
|
COD 0 - 15,000 mg/L, 25
5052-52
|
COD HR+ Vial Kit; Not USEPA Approved | Dichromate Reactor Digestion | 0-15,000 ppm | Pack of 25 |
$41.97
|
|
|
COD 0 - 15,000 mg/L, 98
5052-53
|
COD HR+ Vial Kit; Not USEPA Approved | Dichromate Reactor Digestion | 0-15,000 ppm | Pack of 98 |
$138.72
|
