Biohazard Symbol | Universal Warning Sign for Biological Hazards #3706669 (License: Personal Use)

This standardized black-and-white symbol features three interlocking arcs surrounding a central circle, forming a trefoil shape that conveys danger without language barriers. Created in 1966 by Charles Baldwin at Dow Chemical, it was adopted globally for labeling biological hazards including pathogens, medical waste, and contaminated materials. Its high-contrast, symmetrical design ensures visibility and legibility from multiple angles and distances.

Used on lab equipment, medical waste containers, quarantine zones, and biosafety signage; this image serves users seeking hazard identification, safety compliance info, or educational material about biosafety symbols.