Which of the following is considered biological safety equipment?

Biological safety equipment is designed to protect individuals from exposure to biological hazards, such as pathogenic microorganisms or harmful biological agents. Among the options provided, biosafety cabinets are a key component of biological safety equipment. These cabinets are specifically designed to provide a controlled environment where biological work can be performed safely, protecting the user, the environment, and the samples being handled. They offer ventilation and filtration systems that minimize exposure to contaminants.

Non-retractable needles and syringes are also safety devices intended to reduce the risk of needlestick injuries, an important aspect of safe handling practices, but they do not categorize as biological safety equipment in the same way biosafety cabinets do.

Therefore, the combination of biosafety cabinets along with non-retractable needles and syringes categorizes the answer as the correct choice, as both contribute to biological safety in laboratory settings. It highlights the importance of equipment and practices working hand-in-hand to maintain safety against biological hazards.