What is the lowest concentration of a substance’s vapor, in air, that can be smelled. What is an Odor Threshold
What are adverse effects resulting from taking a substance into the body by mouth. What is poisoning by ingestion.
What is a term used to express the airborne concentration of material to which nearly all persons can be exposed day after day 8 hours 40 hours a week without adverse effects. What is a TLV Time Weighted Average or Time Weighted Average.
What is the concentration that should not be exceeded even instantaneously. What is a ceiling limit.
What is the allowable concentration for a normal 8-hour workday or 40-hour work week. What is TLV Time Weighted Average or OSHA PEL Time Weighted Average