When should safety cabinets be checked for their face velocity?

Safety cabinets are critical pieces of equipment in laboratories that handle biological materials, and checking their face velocity is essential for ensuring optimal performance and safety. Face velocity refers to the speed at which air flows into the cabinet, which is crucial for maintaining a sterile environment and preventing the escape of contaminants.

The recommended frequency for checking the face velocity is once a month. This regular interval allows for timely detection and correction of any issues that might affect the cabinet's performance. Monthly checks help ensure that the airflow remains within acceptable ranges, thereby safeguarding user health and maintaining compliance with safety regulations.

In contrast, checking after every use would be impractical and time-consuming, considering the high frequency of cabinet operation in many laboratories. Similarly, inspections at the beginning of every week might not be frequent enough to catch any performance issues, while checking every six months would not provide adequate oversight to catch problems early enough to prevent exposure risks. Regular checks align safety protocols with best practices in laboratory environments.