ISO 4589 ASTM D2863 Fully Automatic Oxygen Index Test Machine LOI Tester NES 714 Combustion O2 Concentration Analyzer

This method determines the minimum oxygen concentration required to sustain combustion of test specimens within a flowing mixture of oxygen and nitrogen under specified conditions. The result is defined as the Oxygen Index, with higher values indicating superior flame-retardant performance and lower values suggesting easier ignition.

The method is categorized into room-temperature and high-temperature oxygen index testing based on ambient temperature during combustion.

Construction materials, rail transit, marine materials, wires and cables, upholstered furniture, automotive interiors, and related sectors.

• ISO 4589-3:2017 (International Organization for Standardization)
• GB 8624:2025 (Chinese National Standard)
• NES 714 (Naval Engineering Standard)
• ASTM D2863 (American Society for Testing and Materials)
• GB/T 10707:2008 (Chinese National Standard)
• GB/T 2406:2009 (Chinese National Standard)

• Oxygen sensor with accuracy <0.1%
• Digital display for nitrogen flow rate and mixed gas flow rate
• One-touch setup with automatic mixing and oxygen concentration display
• High-temperature resistant quartz glass cylinder
• Adjustable gas ignition device with flame length control
• Sample holders for both self-supporting and non-self-supporting specimens
• Automatic lifting/lowering glass cylinder for easy sample replacement
• Optimized gas piping for faster response times
• Programmable logic controller (PLC) based system