In a research environment, which of the following is classified as a containment hazard?

In a research environment, containment hazards specifically refer to materials that pose a risk to human health or the environment due to their hazardous nature, which includes the potential for exposure or contamination. Radioisotopes and toxins fit this definition as they can emit harmful radiation or have toxic effects on living organisms.

Proper handling and containment procedures are critical when dealing with such materials to prevent accidental exposure, environmental contamination, or harm to personnel working in or near the laboratory. Using appropriate containment methods, such as fume hoods, lead shielding, and specialized waste disposal, is essential in mitigating the risks associated with these substances.

In contrast, microorganisms that do not cause disease are generally considered low-risk or non-containment hazards, as they do not pose a significant threat to health. General laboratory waste and standard cleaning supplies also fall into categories that are typically managed through routine safety protocols rather than the stringent containment measures required for handling true hazards like radioisotopes or toxins.