AQUASOL DIGITAL APCODR2 COD Vial Refill Set | 0–1500 mg/L (PPM) | 100 Tests | Medium Range COD Reagent Refill Pack

AQUASOL DIGITAL APCODR2 is a 100-test COD vial reagent refill pack for medium-range Chemical Oxygen Demand analysis from 0 to 1500 mg/L (ppm as O₂). It is designed for use with standard 16 mm COD vials and uses a closed micro-reflux digestion method for convenient laboratory and on-site COD testing.

Key Features

• Brand: AQUASOL DIGITAL
• Product Code: APCODR2
• Parameter: Chemical Oxygen Demand (COD)
• COD Range: 0–1500 mg/L (ppm as O₂)
• Pack Size: 100 Test Refill Set
• Vial Compatibility: Standard 16 mm COD vials
• Method: Closed micro-reflux COD digestion
• Designed for convenient COD testing
• Suitable for laboratory and on-site applications
• Compatible with COD analyzers/meters using standard COD vial formats
• Refill format helps reduce the cost compared with replacing complete ready-to-use vial packs
• Manufacturer documentation references ISO 15705:2002 and Indian Standard IS 3025 (Part 58):2006.

Technical Specifications

The manufacturer's data sheet identifies the refill reagents as CODC2, CODS1 and CODM1, with a 1 mL plastic syringe, comparator tube, spoon and procedure label listed as accessories.

Reagent Composition / Refill Components

The APCODR2 refill set is documented as containing:

• CODC2 reagent – 1 bottle
• CODS1 reagent – 3 bottles
• CODM1 reagent – 1 bottle
• 1 mL plastic syringe
• Comparator tube with mark
• Spoon
• Procedure label

The manufacturer SDS states that the refill packaging contains six 100 mL plastic bottles of reagent together with a plastic syringe, packed for protection.

COD Testing Principle

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

Applications

Suitable for COD analysis in:

• Drinking water
• Mineral water
• Well water
• Swimming pool water
• Surface water
• Groundwater
• Aquaculture water
• Boiler water
• Process water
• Industrial wastewater
• Effluent water
• Cooling systems
• Chiller water
• Environmental monitoring
• Water-treatment laboratories

These applications are listed in the manufacturer's APCODR2 product data sheet.

Typical Refill Preparation

For preparing a standard 16 mm × 100 mm COD vial, the manufacturer's procedure specifies adding 0.25 mL CODC2, the specified quantity of CODS1, and half a spoon of CODM1 before closing and mixing the vial. The prepared vial is then used for COD testing.

For the actual COD test, the documented procedure uses a blank and sample vial, followed by digestion at 150°C for 2 hours, cooling and measurement with a COD meter/analyzer.

Important Interferences

Potential interfering substances identified by the manufacturer include:

• Straight-chain aliphatic compounds
• Aromatic hydrocarbons
• Fatty acids
• Chlorides
• Nitrites
• Iron

Storage

Store the reagents closed at ambient temperature and follow the storage conditions and expiry information stated on the product packaging. The manufacturer's data sheet specifies a 36-month shelf life.

What's Included

1 × AQUASOL DIGITAL APCODR2 COD Vial Refill Set — 100 Tests

Refill components include CODC2, CODS1 and CODM1 reagents plus the specified syringe and accessories. COD vials are not the same as a ready-to-use 25-vial APCODV2 pack; APCODR2 is the reagent refill set.

Ideal For

Water Testing Laboratories | Environmental Laboratories | ETP/STP Plants | Industrial Wastewater Testing | Research Laboratories | Food & Beverage Industries | Aquaculture | Process Water Monitoring | Municipal Water Testing