BS EN ISO 4589-2 · ASTM D2863
Oxygen Index — OI
Measures the minimum percentage of oxygen in a test atmosphere required to marginally support combustion.
- Measures:
- Oxygen index (%)
- Markets:
- Plastics · Railway
- Related classification:
- EN 45545-2
BS EN ISO 4589-3
Elevated-Temperature Oxygen Index — TOI
Determines the oxygen index at temperatures up to 125°C — a better determinant of combustibility than the conventional oxygen index.
Plastics — Determination of burning behaviour by oxygen index — Part 3: Elevated-temperature test
Test overview
The Elevated-Temperature Oxygen Index module (TOI) is used alongside the OI to determine the oxygen index at temperatures up to 125°C. Research shows that the elevated temperature at which the materials will burn in air is a better determinant of combustibility than is the conventional oxygen index. Oxygen Index values fall when the gas temperatures are increased.
Our apparatus enables the oxygen index at elevated temperature to be determined in accordance with ISO 4589 Part 3 or the UK Naval Engineering Standard NES 715.
Sample requirements
Sample dimensions, quantities, mounting, substrate and conditioning requirements for this test are confirmed with you before testing begins. Contact our technical team for the sample requirements for your product.
Equipment and outputs
- Equipment used
- Elevated-Temperature Oxygen Index module
- Reported measurements
- Oxygen index at elevated temperature (%)
Related tests
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