Chemical oxygen demand (COD) analysis
The chemical oxygen demand (COD) of water can be determined by the dichromate method after digestion. Avantor® offers two methods for measuring COD:
- Rapid method
- Official method
Merck COD rapid method products
A comprehensive selection of cuvette tests for measuring COD, as well as for high-chloride samples, including three thermoreactor models, standards and spectrophotometers.
All Spectroquant® test kits can be used with spectrophotometers from Merck and other brands.
The combination of Spectroquant® test cells and digestion reagents makes this an integrated system.
A new range of instruments that are designed to meet requirements for analyzing wastewater, process water or drinking water and beverages.
Hach® COD rapid method systems
Complete systems for COD analysis, provided with a wide range of prepared COD reagents that do not require sample dilution, a reactor and spectrophotometers.
Download our white paper for more information.
Cuvette tests for water testing applications. Pre-dosed reagents for maximum safety.
Dow Chemical uses COD analysis to determine the number of organics in a given water sample. Learn more.
This digestion system uses high-speed digestion technology for fast and cost-effective digestion in 15 minutes.
Select the spectrophotometer that best meets your application needs.
COD official method
Samples can be mineralized in a manual or automatic digestion system with the correct reagents.
The ECO 6 thermoreactor is designed to digest samples for a range of analyses. For use with 200-ml tubes or Ø 16-mm cuvettes.
Our titration page includes information and literature on our products and their applications, as well as an FAQ list.
A selection of chemicals and reagents used in COD determination.
These standards, in concentrations from 10-60 000 mg/L, are ideal for verifying COD analyses.
Have questions about COD products?
Our team is ready to help. Contact us today.