AQUASOL DIGITAL APCODV2 COD Vials | 0–1500 mg/L (ppm) COD Range | Ready-to-Use | 25 Vials

AQUASOL DIGITAL APCODV2 COD Digestion Vials are ready-to-use reagents for Chemical Oxygen Demand (COD) testing in water and wastewater samples. Designed for the 0–1500 mg/L (ppm as O₂) range, the vials use a closed micro-reflux digestion method and are suitable for photometric COD measurement. The pack contains 25 reagent-filled vials.

Key Features

• Brand: AQUASOL DIGITAL
• Product Code: APCODV2
• COD Range: 0–1500 mg/L (ppm as O₂)
• Pack Size: 25 vials
• Ready-to-use COD reagent vials
• 16 mm standard vial size
• Closed micro-reflux COD measurement
• Designed for photometric COD analysis
• Suitable for standard COD meters/analyzers
• Helps simplify COD testing compared with traditional open-reflux titrimetric procedures
• Shelf life: 36 months when stored as specified

Technical Specifications

Applications

Suitable for COD testing of:

• Drinking water
• Mineral water
• Well water
• Swimming pool water
• Surface water
• Groundwater
• Aquaculture water
• Boiler water
• Process water
• Industrial wastewater
• Effluent water
• Cooling-system water
• Chiller water

Method / Working Principle

The sample is oxidized using a hot sulfuric-acid solution containing potassium dichromate, with silver sulfate as catalyst. Chloride interference is masked using mercury sulfate. After digestion, the remaining dichromate is determined photometrically and the result is expressed as mg/L COD as O₂.

Pack Contents

• 25 × APCODV2 COD reagent vials
• Plastic syringe, 1 mL – 5 Nos.
• Procedure label – 1 No.

Basic Testing Procedure

1. Take one vial and add 2 mL COD-free demineralized water to prepare the blank.
2. Take another vial and add 2 mL sample.
3. Close both vials tightly and swirl for 10–15 seconds.
4. Digest at 150°C for 2 hours using a suitable COD digester.
5. Cool naturally to room temperature for approximately 15–20 minutes.
6. Read the COD value using a compatible COD meter/analyzer.

Storage

Keep the reagent vials closed and stored at ambient temperature, following the storage conditions specified on the product packaging. The manufacturer's data sheet states stability up to the date indicated on the pack under the specified storage conditions.