In the NFPA Diamond labeling system, what does the blue diamond signify?

The blue diamond in the NFPA (National Fire Protection Association) labeling system signifies health hazards. This system employs a color-coded method to communicate the dangers associated with hazardous materials, and each diamond's color denotes a specific type of hazard. The blue diamond focuses on the potential health risks that a material might pose to individuals who are exposed to it.

In this context, this indicates the degree of health risk, with higher numbers on the scale representing greater potential harm to humans. Understanding the information presented in the blue diamond is crucial for responders and workers dealing with hazardous materials, as it guides them in taking appropriate safety measures to protect their health while managing these substances.