Associate Certified Entomologist (ACE) Practice Exam

What does the term "threshold limit values (TLV)" refer to in the context of SDS?

1. Exposure controls

2. Stability measures

3. Health hazard ratings

4. Environmental safety standards

The correct answer is: Exposure controls

Threshold Limit Values (TLVs) represent the level of exposure to a chemical substance that is considered safe for workers over a specific period, typically a workday. These values help in establishing exposure controls, as they provide a guideline for employers and employees to manage and minimize occupational exposure to hazardous substances. In the context of Safety Data Sheets (SDS), TLVs are critical for understanding the potential risks associated with chemicals, assisting in enforcing practices to keep exposure below these limits. This is essential for maintaining a safe work environment and protecting the health of workers. While the other options touch on important topics related to chemical safety and management, they do not specifically address the direct application of TLV values, which primarily focus on measuring and controlling exposure levels in the workplace.