Abbreviations for Air/Gas Monitoring

PEL – Permissible Exposure Limit
STEL – Short Term Exposure Limit
Ceiling – Maximum Peak Level
TWA – Time Weighted Average
LC50 – Lethal Concentration
LD50 – Lethal Dosage
IDLH–Immediately Dangerous Life Health

AGT – Authorized Gas Tester
CH4 – Methane
H2S – Hydrogen Sulfide
LEL – Lower Explosive Limit
UEL – Upper Explosive Limit
PPM – Parts Per Million

Turkish