Which precaution is essential while working in a biosafety cabinet?

Wearing proper personal protective equipment (PPE) is essential when working in a biosafety cabinet because it serves as the first line of defense against potential exposure to hazardous biological materials. PPE, which can include gloves, lab coats, masks, and face shields, helps to protect the individual from contact with infectious agents or biological substances that may be used or manipulated within the cabinet.

The biosafety cabinet itself provides a controlled environment and ensures the containment of aerosols and spills, but it does not eliminate the risk entirely. Therefore, supplementing this containment with appropriate PPE ensures that users are shielded from potential risks associated with the work being performed.

In contrast, keeping the cabinet door open can lead to contamination and disrupt the airflow designed to protect the user and samples. Sudden movements can cause disturbances in airflow, increasing the risk of exposure. Using multiple power sources for equipment does not directly relate to biosafety precautions and could create additional hazards. Thus, the practice of wearing proper PPE aligns directly with the overarching goals of biosafety: minimizing exposure and protecting health.