Because there is variability in Autoignition Temperature (AIT) values, generally you should use the highest value you can find.

Because there is variability in Autoignition Temperature (AIT) values, generally you should use the highest value you can find.

• A. True
• B. Most conservative
• C. False
• D. Not sure

Answer: (C)

AIT can vary across data sources and tests because of differences in heating rate, sample purity, pressure, oxygen level, and testing methods. Because you want to protect against ignition, you use the most conservative figure—the lowest AIT reported among credible data—to account for the worst-case scenario. Using the highest AIT would risk underestimating danger and skipping necessary safeguards. So the statement is not correct; the safer practice is to base assessments on the lowest reliable AIT value.

AIT can vary across data sources and tests because of differences in heating rate, sample purity, pressure, oxygen level, and testing methods. Because you want to protect against ignition, you use the most conservative figure—the lowest AIT reported among credible data—to account for the worst-case scenario. Using the highest AIT would risk underestimating danger and skipping necessary safeguards. So the statement is not correct; the safer practice is to base assessments on the lowest reliable AIT value.