What is included in the commissioning of a laboratory ventilation system?

The commissioning of a laboratory ventilation system involves a comprehensive evaluation and validation process to ensure it functions as intended and meets safety standards. This includes verifying several important aspects to ensure effective ventilation, maintaining air quality, and protecting laboratory personnel.

Verification of air supply rates is crucial because it ensures that the system is delivering the appropriate amount of clean air required for the operational needs of the laboratory. This is essential to maintain a balance in air pressure and prevent contamination.

Verification of negative pressure is also fundamental. It ensures that hazardous fumes and vapors are contained within specific areas, such as fume hoods and biosafety cabinets, preventing their escape into adjacent spaces where personnel work.

Face velocity and containment tests of fume hoods are necessary to confirm that they are functioning correctly to provide effective containment of potentially harmful substances. This involves measuring the air movement across the face of the fume hood, which is critical for ensuring that hazardous materials are not released into the laboratory environment.

By encompassing all of these elements, the commissioning process ensures that the laboratory ventilation system is reliable, efficient, and safe for users, making option four the most comprehensive and correct choice.