In what type of BSC is the airflow control adjusted for handling hazardous drugs?

• A. Class I
• B. Class II
• C. Class III
• D. Class IV

Answer: (C)

Class III Biological Safety Cabinets (BSCs) are specifically designed for the safe handling of hazardous drugs and other biohazardous materials. These cabinets provide a high level of containment, as they are mechanically ventilated and typically have a sealed design that prevents any airflow from escaping into the room. The airflow within a Class III BSC is carefully controlled to maintain negative pressure, ensuring that any hazardous particles remain contained within the cabinet.

In contrast to Class III, other types of BSCs, such as Class I and Class II, provide different levels of protection, either for the operator or for the products being handled, but not to the same extent as Class III in terms of containment of hazardous substances. Class I cabinets protect the user and the environment but do not offer the same level of containment for the materials processed within. Class II cabinets, while they offer both protection for the operator and the sterile environment for the drugs being processed, still cannot match the rigorous containment level provided by Class III. Class IV does not typically refer to a category of BSCs but instead involves other forms of laboratory safety equipment.

Therefore, Class III BSCs are uniquely suited for tasks involving hazardous drugs, ensuring that both the operator's safety and the integrity of the