Which of the following is a special info indicator on the HMIS label?

The special information indicator on the HMIS (Hazardous Materials Identification System) label provides critical information about the type of personal protective equipment (PPE) necessary for safely handling a chemical. This is important for ensuring that individuals are aware of the specific safety gear required, whether it be gloves, goggles, or respirators, to protect against exposure to hazardous materials.

While the other options, such as flammability, health hazard, and reactivity levels, are important components of the HMIS label, they communicate different aspects of the hazards associated with the chemicals. Flammability, health hazard, and reactivity levels assess the inherent dangers of the substance itself, whereas the special information indicator specifically addresses the precautions—particularly the necessary PPE—that workers should take to mitigate those dangers. This distinction is crucial for maintaining safety in environments that handle potentially hazardous materials.