Biohazard Symbol - Universal Warning Sign for Biological Hazards #292952 (License: Personal Use)

This black-and-white biohazard symbol features three interlocking circles surrounding a central dot, forming a trefoil shape. Created in 1966 by Charles Baldwin at Dow Chemical, it was engineered to be unmistakable, memorable, and non-culturally specific. It is used globally to label biological substances that pose a threat to human health, such as infectious agents, medical waste, or genetically modified organisms.

Used on laboratory equipment, biohazard waste containers, safety signage, and in public health communications; matches user intent for hazard identification, safety training, regulatory compliance, or educational content about biosafety.