Biohazard Symbol - Official Warning Sign for Biological Hazards #228552 (License: Personal Use)

This high-contrast black-and-white biohazard symbol consists of three overlapping circles radiating from a central point, forming a trefoil shape. Created in 1966 by Charles Baldwin at Dow Chemical, it was intentionally designed to be memorable, non-cultural, and instantly recognizable. It is mandated by OSHA and ISO standards for labeling containers, equipment, and areas containing biological hazards such as viruses, bacteria, bloodborne pathogens, and medical waste.

This image is used on safety signage, lab manuals, PPE packaging, hazardous waste labels, and educational materials about biosafety. It matches user intent for identifying hazard symbols, compliance guidance, or visual reference in health and safety documentation.