🔬 What Is an Oxygen Index Tester and Why It Matters in Fire Safety Testing?
In the world of materials science and fire safety, accurate testing is critical to ensuring compliance and protecting lives. One of the most essential tools in this field is the Oxygen Index Tester.
✅ What Is an Oxygen Index Tester?
The Oxygen Index Tester is a laboratory instrument used to measure the minimum concentration of oxygen in a mixture of oxygen and nitrogen that is required to sustain combustion of a material. This value is known as the Limiting Oxygen Index (LOI).
The higher the LOI, the less flammable the material is. For example:
- Materials with an LOI below 21% (the normal oxygen level in air) are considered highly flammable.
- Materials with an LOI above 26% are considered self-extinguishing under normal conditions.
This makes the LOI an essential parameter for evaluating the fire resistance of plastics, rubbers, textiles, foams, and other polymeric materials.
🔍 Key Applications
Oxygen Index Testers are widely used in:
- Quality control in plastic and polymer production
- Research & development of flame-retardant materials
- Certification for building materials, transportation, and electronics
- Comparative analysis between different material grades
Standards often followed include ASTM D2863, ISO 4589, and GB/T 2406.
🧪 Features of Gorban Tester Oxygen Index Tester:
✔️ Fully automatic digital interface with precise gas flow control ✔️ High-accuracy sensors and flow meters ✔️ Durable combustion column made from heat-resistant glass ✔️ Meets international testing standards ✔️ Easy-to-use for both lab and factory environments.