LOVIBOND COD VARIO HR/25 COD REAGENT TEST

Brand: Lovibond
Product: COD VARIO HR Tube Test
Catalogue No.: 2420722
Product Code: COD HR/25
Parameter: Chemical Oxygen Demand (COD)
Range: 200–15,000 mg/L
Range Type: High Range (HR)
Pack Size: 25 Vials
Number of Tests: 25
Test Format: Pre-dosed reagent tubes
Method: Potassium Dichromate / Sulfuric Acid (H₂SO₄)
Application: Water & Wastewater Analysis

Product Overview

The Lovibond COD VARIO HR/25, Cat. No. 2420722, is a ready-to-use high-range COD reagent tube test for the photometric determination of Chemical Oxygen Demand (COD) in water and wastewater samples.

With a measuring range of 200–15,000 mg/L, this high-range reagent set is intended for samples with relatively high organic pollution loads, including industrial wastewater, heavily contaminated wastewater and process-control applications.

The pack contains 25 pre-dosed reagent vials, allowing individual tests to be performed without the need for manual reagent weighing or preparation. Lovibond product information identifies the reagent as a COD-HR tube reagent, using the potassium dichromate/sulfuric-acid method.

Key Features

• High-range COD measurement: 200–15,000 mg/L
• 25 pre-dosed reagent vials
• Ready-to-use tube-test format
• Designed for photometric COD analysis
• High-range formulation for heavily loaded wastewater samples
• Potassium dichromate / sulfuric acid chemistry
• Reduces manual reagent preparation
• Consistent reagent dosing between tests
• Suitable for routine laboratory and wastewater testing
• Designed for compatible Lovibond COD photometers and digestion systems

Technical Specifications

COD Measurement Principle

Chemical Oxygen Demand represents the amount of oxygen equivalent required to chemically oxidize oxidizable substances present in a water sample.

The Lovibond COD VARIO test uses a dichromate-based digestion method. During digestion, oxidizable substances in the sample react under controlled temperature and acidic conditions. After digestion, the prepared vial is measured photometrically using a compatible instrument to determine the COD concentration.

Typical Test Workflow

1. Select the COD VARIO HR 200–15,000 mg/L reagent vial.
2. Add the required sample volume according to the applicable Lovibond test method.
3. Close the vial securely.
4. Mix carefully according to the instrument/reagent instructions.
5. Place the vial in a compatible COD thermoreactor.
6. Perform the specified digestion cycle.
7. Allow the vial to cool as instructed.
8. Mix/prepare the vial for photometric measurement.
9. Insert the vial into the compatible photometer.
10. Select the appropriate COD HR method and record the result.

Always follow the current Lovibond operating procedure supplied with the instrument and reagent.

Applications

The high-range COD test is suitable for:

• Industrial wastewater
• Heavily polluted wastewater
• Wastewater treatment plants
• Industrial effluent monitoring
• Chemical and process industries
• Food and beverage wastewater
• Pharmaceutical wastewater
• Textile industry wastewater
• Pulp and paper wastewater
• Environmental laboratories
• Process-control laboratories
• Wastewater treatment process monitoring
• Routine COD quality control

Why Use Pre-Dosed COD Vials?

The pre-dosed tube format provides a convenient alternative to preparing COD reagents manually.

Benefits

Ready to use:
No manual weighing and preparation of individual reagents is required.

Consistent dosing:
Each vial contains a controlled quantity of reagent for the applicable test method.

Convenient testing:
The sealed/prepared tube format simplifies routine COD analysis.

Reduced handling:
Pre-prepared reagents can reduce the number of reagent preparation steps in the laboratory.

Efficient workflow:
Particularly useful for laboratories performing repeated COD measurements.

Pack Contents

1 × Lovibond COD VARIO HR/25 Reagent Set
25 × COD HR pre-dosed reagent vials

Catalogue No.: 2420722

Important Safety Information

COD reagents contain corrosive and hazardous chemicals and should be handled only by trained personnel.

• Wear appropriate laboratory gloves and eye protection.
• Follow the applicable Safety Data Sheet (SDS).
• Handle reagent vials carefully.
• Do not open hot digestion vials.
• Use an appropriate COD thermoreactor.
• Avoid skin and eye contact.
• Dispose of used COD vials and chemical waste according to applicable regulations.
• Do not dispose of used reagent directly into drains unless specifically permitted by the applicable waste-disposal procedure.

Product Identification

Lovibond COD VARIO HR/25
Range: 200–15,000 mg/L
Pack: 25 Vials
Cat. No.: 2420722