Digital Oxygen Index Tester for Polymer Combustibility Testing | Accurate Flame Retardancy & Oxygen Index Measurement

📌 Digital Oxygen Index Tester Overview

The Digital Oxygen Index Tester is manufactured according to international standards such as GB18380.11/12-2022 and IEC60332-1-1:2015. It is used to measure the volume percentage of oxygen required for the combustion of polymers. The oxygen index of the polymer refers to the minimum oxygen concentration in the oxygen-nitrogen mixed gas flow required to maintain the combustion of the sample after ignition, with a burn length of 50mm or a burn time of 180 seconds. This test is used to evaluate the combustion performance of polymers, especially their flame retardancy and fire safety.

This instrument can be used as a means of identifying the flame retardancy of polymers and as a research tool for laboratory research on flame-retardant formulations. It provides a powerful testing method for the development of new flame-retardant materials, and is particularly suitable for evaluating the fire resistance of polymer materials. It is suitable for combustion testing of solid materials, laminated materials, foamed plastics, fabrics, soft films, and thin films, and is widely used in fire safety testing of building materials and flame retardancy testing of electronic products.

The instrument has a reasonable structural design, and is easy to operate, use, and maintain. The testing system uses an imported oxygen sensor, and displays results digitally, offering accurate oxygen index measurements. The equipment provides accurate determination and good reproducibility, delivering high precision test results. It is an ideal testing device for scientific research, production, and quality control, particularly for the analysis of combustion performance and fire safety of polymers.

This device is widely used in research laboratories, production quality control, material research departments, and safety inspection agencies for polymer combustibility testing, oxygen index testing, and flame retardancy evaluation. It helps various material manufacturers and product development teams ensure their products meet strict fire safety standards, enhancing their market competitiveness.

📌 Product Details & Operation Display

🔧 Operating Area Details

⚙️ Measurement Display Details

📊 Technical Parameters

• Digital Resolution: ±0.1%
• Measurement Accuracy: Level 0.4
• Flow Adjustment Range: 0-10L/min (60-600L/h)
• Response Time: <5S
• JF-3: Combustion Chamber: Inner diameter ≥75 mm, height 400 mm
• JF-3A: High-temperature Quartz Combustion Chamber: Inner diameter ≥75 mm, height 480 mm
• Gas Flow Speed in Combustion Chamber: 40mm±2mm/s
• Pressure Gauge Accuracy: Level 2.5
• Resolution: 0.01 MPa
• Flow Meter: 1-15L/min (60-900L/h), adjustable
• Ambient Temperature: Room temperature to 40°C
• Relative Humidity: ≤70%
• Input Pressure: 0.2-0.3 MPa
• Working Pressure: Nitrogen 0.1-0.15 MPa, Oxygen 0.1-0.15 MPa
• Oxygen/Nitrogen Mixed Gas Inlet: Includes pressure regulator, flow adjustment valve, gas filter, and mixing chamber
• Sample Clamp: Suitable for soft and hard plastics, textiles, fire doors, etc.
• Propane (Butane) Ignition System: Flame length 5mm-60mm, freely adjustable
• Gas: Industrial nitrogen and oxygen, purity >99% (user-supplied)
• Power Supply: AC220 (+10%) V, 50Hz
• Maximum Power Usage: 50W
• Igniter: A metal tube with an inner diameter of Φ2±1mm at the nozzle, capable of being inserted into the combustion chamber to ignite the sample. Flame length: 16±4mm, adjustable in size
• Self-supporting Material Sample Clamp: Can be fixed at the center axis of the combustion chamber and hold the sample vertically
• Non-self-supporting Material Sample Clamp: Can fix both vertical edges of the sample simultaneously on the frame (optional, suitable for textiles and other soft materials)

💡 Why Choose Us?

Tianchang Tongda Instruments Co., Ltd. is a trusted test equipment manufacturer in China,
with over 20 years of experience in industrial testing and quality control.

We specialize in high-precision equipment for pipes, steel structures, rebar, cables, insulation materials, and more.
Our instruments are widely used in laboratories, manufacturing plants, universities, and third-party inspection agencies.

As an ISO-certified company, we ensure all products meet international standards such as ISO, ASTM, and EN.
From installation to remote support, we deliver reliable service and lasting technical assistance.

Our sales network covers all provinces in China and continues to grow globally.
Clients in Southeast Asia, the Middle East, and Europe rely on us for accurate and efficient testing solutions.