What must be done if hazardous materials are used in a laboratory?

If hazardous materials are used in a laboratory, it is vital to always have appropriate signage displayed. This signage serves multiple important functions: it alerts personnel and visitors to the presence of hazardous materials, identifies the specific dangers associated with those materials, and communicates necessary precautions that should be observed while in the area. The presence of clear, standardized signage is a critical part of ensuring safety, as it helps to prevent accidents and ensures that everyone in or near the laboratory understands the risks involved.

Displaying appropriate signage promotes awareness and responsibility among all lab users and visitors. This is essential in maintaining compliance with safety regulations and protocols that are designed to protect individuals and the environment from potential hazards.

Other choices may not adequately address lab safety protocols, such as using small quantities potentially increasing risks if improper handling occurs, keeping doors open that could lead to unauthorized access or exposure, and allowing unrestricted access which contradicts basic safety standards in laboratory settings.