Chemical Oxygen Demand (COD) is one of the most important parameters for evaluating wastewater quality. It indicates the amount of oxygen required to chemically oxidize organic matter present in water and wastewater. Accurate COD testing helps industries, laboratories, and wastewater treatment facilities monitor treatment efficiency and maintain compliance with environmental requirements.
To simplify the entire testing process, Hanna Instruments offers a complete COD testing combo featuring a multiparameter benchtop photometer, COD reactor, and ready-to-use COD reagent vials—an all-in-one solution for reliable wastewater analysis.
Everything You Need for COD Testing
Traditional COD testing can involve multiple instruments and preparation steps. A complete COD testing setup brings the essential equipment together, making laboratory workflows more organized and efficient.
The solution combines:
- Multiparameter Benchtop Photometer – For accurate photometric analysis of COD and other important water quality parameters.
- COD Reactor – Provides controlled heating required for the COD digestion process.
- COD Reagent Vials – Pre-prepared reagents simplify testing and reduce preparation time.
How Does COD Testing Work?
COD analysis generally involves three key stages:
1. Sample Preparation
A wastewater sample is added to the appropriate COD reagent vial.
2. Digestion
The prepared sample is placed in the COD reactor, where controlled heating allows the organic matter to react with the oxidizing chemicals.
3. Photometric Measurement
After digestion and cooling, the sample is measured using the multiparameter benchtop photometer. The instrument measures the resulting color intensity and provides the COD concentration.
This workflow helps laboratories achieve consistent and repeatable results while reducing manual handling.
Why Choose an All-in-One COD Solution?
A dedicated COD testing combination offers several practical advantages:
✔ Simplified Workflow
Use the reactor, reagent vials, and photometer together for a straightforward testing process.
✔ Reliable Measurements
Photometric analysis provides objective measurement instead of relying on visual color comparison.
✔ Efficient Laboratory Testing
Pre-prepared reagent vials and an integrated testing workflow can help reduce preparation time.
✔ Multiparameter Capability
The benchtop photometer can be used for COD as well as other water and wastewater parameters, depending on the model and available methods.
✔ Suitable for Multiple Applications
Ideal for wastewater treatment plants, industrial laboratories, environmental monitoring, research laboratories, and quality-control applications.
Applications of COD Testing
COD analysis is widely used across industries and wastewater treatment applications, including:
- Municipal wastewater treatment
- Industrial wastewater monitoring
- Food & beverage industries
- Pharmaceutical manufacturing
- Chemical industries
- Environmental laboratories
- Research and quality-control laboratories
Complete Your COD Testing Setup
Accurate wastewater analysis requires more than just a photometer. With a multiparameter benchtop photometer, COD reactor, and COD reagent vials, laboratories can build a complete COD testing workflow in one solution.
From digestion to measurement—everything you need for COD testing, all in one.
Hanna Instruments – Complete COD Testing Combo
Multiparameter Benchtop Photometer + COD Reactor + COD Reagent Vials
Test smarter. Work efficiently. Get dependable COD results.