This Oxygen Index Test Apparatus is designed to evaluate the minimum oxygen concentration required to support flaming combustion in plastic materials, polymers, cables, rubber, laminates, paints, and surface coatings. It conforms to ASTM D-2863, BS 2782 PT-141, and ISO-4589 standards.

Key Features & Functional Details

Measurement Capabilities

• Oxygen Concentration Range: 0 – 100%
• Resolution: 0.01%
• Accuracy: ±0.5%

Construction & Controls

• All metal box Construction, including Control Box, ensuring durability and corrosion resistance.
• Solid-State Controls for enhanced precision and reliability.
• Gas Distribution & Control:
  • Power supply allows operation within a wide voltage range (200-250V or 90-125V AC, single-phase) Optional
  • Precision gas regulator with locking facility ensures stable and repeatable test conditions.

Oxygen Sensor & Regulation

• Imported Oxygen Sensor with 4-micron filter for high precision.
• Long-life sensor for reliable and repeatable measurements.

Applications

The Critical Oxygen Index (COI) Test determines the minimum oxygen concentration required to sustain combustion in a controlled mixture of oxygen and nitrogen. This test is crucial for assessing the flammability of materials in industries such as:
✅ Plastics & Polymers
✅ Electrical Cables & Insulation Materials
✅ Rubber & Nylon Products
✅ Laminates & Surface Coatings
✅ Paints & Protective Coatings