Occupational Safety and Health Administration (OSHA) SLC Practice Exam

How long should masks be worn before disposal?

1. Until they are visibly soiled

2. Indefinitely

3. Once and discarded into biohazardous waste containers

4. For a minimum of 8 hours

The correct answer is: Once and discarded into biohazardous waste containers

In the context of proper health and safety protocols for masks, the guideline stating that masks should be worn once and then discarded into biohazardous waste containers is correct. This practice is particularly important for masks that are intended for single use, such as surgical masks and certain types of respiratory protective equipment. These masks are designed to provide a barrier against infectious agents and pollutants but lose their effectiveness once they have been worn, particularly in clinical or high-risk environments. Masks should be disposed of after a single use to prevent cross-contamination and ensure that they can maintain their intended protective qualities. Proper disposal into biohazardous waste containers is critical to help minimize the risk of spreading pathogens and to comply with safety regulations. The other options, while they address different aspects of mask use, do not align with the best practices for mask safety and disposal. Wearing a mask until it is visibly soiled may not provide adequate protection if the mask has already reached a saturation point with moisture or pathogens. The idea of indefinite use contradicts the purpose of single-use masks, as their effectiveness diminishes over time. Lastly, a minimum wear time of 8 hours does not recognize that even within that period, the mask may become ineffective or contaminated, making immediate disposal preferable.