Expressed in parts per Million (PPM) • Permissible • Exposure • Limits for material • Ingredient • PEL
Listed on MSDS
• Threshold • Limit • Value • TLV
A level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects
PELs are regulatory limits on the amount or concentration of a substance in the air. They may also contain a skin designation. OSHA PELs are based on a 8-hour time weighted average (TWA) exposure
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