Chemical Oxygen Demand (COD) Test Kit, Instrumental Colorimetric Analysis, 0-150 ppm, Dichromate Reactor Digestion Method (Mercury Free Vials), Chemetrics, Inc., K-7356

CHEMetrics® COD Vials Kit, Mercury Free, Low Range, 0-150 ppm, 150 Vials, K-7356

Features:

• Appearance:  yellow, amber, or orange liquid
• CAS Nos.:
  • Sulfuric Acid:  7664-93-9
  • Water:  7732-18-5
  • Silver Sulfate:  10294-26-5
  • Potassium Dichromate:  7778-50-9
• Dichromate Reactor Digestion Method—References: USEPA Methods for Analysis of Water and Wastes, Method 410.4 (1983). APHA Standard Methods, 20th ed., pp. 5-17, Method 5220 D (1998). A. M. Jirka and M. J. Carter, Micro Semi-Automated Analysis of Surface and Wastewaters for Chemical Oxygen Demand, Analytical Chemistry, Vol. 47, p.1397 (1975). J. A. Winter, Method Research Study 3, Demand Analysis, An Evaluation of Analytical Methods for Water and Wastewater, USEPA, 1971. ASTM D 1252-00, Chemical Oxygen Demand (Dichromate Oxygen Demand) of Water, Test Method B
• COD analysis widely used in municipal and industrial laboratories to measure the overall level of organic contamination in wastewater
• Contamination level is determined by measuring the equivalent amount of oxygen required to oxidize organic matter in sample
• CHEMetrics offers two dichromate reactor digestion methods for fast, easy, safe determinations of low-, mid-, and high-range COD levels in wastewater: the USEPA-approved Method*, and a mercury-free method
• Products using the USEPA-approved method contain mercuric sulfate in the reagent to eliminate chloride interferences and must be disposed of following local, state and federal laws
• More readily disposable mercury-free product line is applicable when chloride interference is not a concern and USEPA reporting is not required
• CHEMetrics leakproof reagent vials contain premeasured solutions of sulfuric acid and potassium dichromate
• To perform the COD determination, the analyst simply removes the Teflon-lined screw cap from the vial, adds sample to the vial, and replaces the cap.
• Vial is then heated for two hours at 150 degrees C in a standard digestor block.
• Once digestion is completed, results are obtained using any photometer that accepts 16-mm diameter cells
• CHEMetrics COD vials can be directly used in V-2000 multi-analyte photometer, CHEMetrics single analyte COD photometers, as well as in Hach spectrophotometers
• Built-in Hach COD methods and calibrations can be used without the need for a new calibration.
• A generic calibration table is included within the CHEMetrics kit for use with other spectrophotometers.

• A fresh reagent ampoule blank must be prepared for each series of tests; therefore the number of samples that can be tested with each kit will vary

⚠ WARNING! This product can expose you to chemicals including chromium, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov