Are standards for all chemicals that identify allowable levels of exposure available?

The assertion that standards for all chemicals that identify allowable levels of exposure are available is false because not all chemicals have established exposure limits or standards. Regulatory agencies, such as OSHA (Occupational Safety and Health Administration) in the United States or similar bodies in other countries, set permissible exposure limits (PELs) for many hazardous substances, but not universally for every chemical.

Many substances, especially new or less common chemicals, may not have defined exposure standards due to factors such as insufficient research, varying levels of toxicity, or ongoing evaluations. Additionally, the variability in regulations across different jurisdictions can result in some chemicals being unregulated or having varying standards based on local laws. This highlights the importance of continuous assessment and updating of safety standards as new information about chemical risks becomes available. Thus, it is crucial for professionals to remain aware of the limitations regarding exposure standards for certain chemicals.