Which of the following is considered biological safety equipment?

Biosafety cabinets are specifically designed biological safety equipment that provide a controlled environment for working with infectious agents or hazardous biological materials. These cabinets protect the user, the environment, and the materials being handled by using airflow control and filtration systems. They ensure that no harmful contaminants are released into the surrounding area while also safeguarding the integrity of the samples or cultures being processed.

In contrast, while needles and syringes are important tools in biological and medical settings, they do not provide the specific safety features associated with biosafety cabinets. Disinfecting chemicals are essential for maintaining a sterile environment, but they do not serve as protective equipment themselves. Technical manuals, while useful for providing guidelines and procedures for safe handling and operational protocols, are not physical safety equipment. Therefore, biosafety cabinets stand out as the crucial equipment needed for ensuring a safe working environment in laboratories dealing with potentially hazardous biological materials.