Final answer:
The recommended air concentration to which most workers can be repeatedly exposed to without adverse health effects is called the Threshold Limit Value (TLV).
Step-by-step explanation:
The recommended air concentration to which most workers can be repeatedly exposed to without adverse health effects is called the Threshold Limit Value (TLV).
The TLV is an occupational exposure limit, established by reputable organizations such as the American Conference of Governmental Industrial Hygienists (ACGIH) and provides guidance on the safe levels of exposure to various substances in the workplace.
For example, the TLV for a substance may be expressed in parts per million (ppm) or milligrams per cubic meter (mg/m³) of air, indicating the maximum concentration of that substance that workers can be exposed to for a specific period of time (e.g. 8 hours), typically over a 40-hour work week, without experiencing adverse health effects.