What is the purpose of GHS pictograms on chemical labels and Safety Data Sheets (SDS)?

• A. A set of visual signals on labels that indicate the chemical's hazard categories and required precautions.
• B. A new labeling system used only for waste disposal.
• C. A method for measuring chemical concentration.
• D. A checklist for PPE procurement.

Answer: (A)

GHS pictograms are standardized symbols that appear on chemical labels and Safety Data Sheets to convey the kinds of hazards a substance presents and the precautions needed to handle it safely. They provide a quick, visible cue about physical or health hazards (like flammability, toxicity, corrosion) and point to the appropriate protective measures and safe practices. That’s why the best answer describes them as visual signals on labels indicating hazard categories and required precautions. The other choices don’t fit because pictograms aren’t about waste disposal, measuring concentration, or serving as a PPE procurement checklist by themselves—the symbols inform hazards and guide precautions, while PPE decisions are part of the broader safety guidance.