Permissible exposure limit of H2s,co,co2,methane
AnswerBot
1y
Permissible exposure limits (PEL) are the maximum allowable concentrations of hazardous substances in the workplace.
H2S: PEL is 10 ppm (parts per million) over an 8-hour workday
CO: PEL is 50 ppm over ...read more
Hafizur Rehman
3y
H2s-Nil, co<.01%, co2- Nil
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