Biohazard Symbol - Universal Warning Sign for Biological Hazards #191487 (License: Personal Use)

This high-contrast red-on-black biohazard symbol consists of three interlocking circles with curved arms radiating from a central point, forming a trefoil shape. Created in 1966 by Charles Baldwin at Dow Chemical, it was designed to be unmistakable and non-language-dependent. It is universally used to label containers, equipment, and areas containing infectious agents, toxins, or other biological hazards.

This image is typically used in safety manuals, laboratory signage, public health communications, and educational content about biosafety levels. It matches user intent related to hazard identification, occupational safety training, or regulatory compliance (e.g., OSHA, CDC guidelines).