Biohazard Symbol - Official Warning Sign for Biological Hazards #3770109 (License: Personal Use)

This high-contrast black-and-white symbol consists of three interlocking circles surrounding a central dot, forming a trefoil shape. Created in 1966 by Charles Baldwin at Dow Chemical, it was intentionally designed to be unfamiliar and alarming to ensure immediate recognition without prior training. It is used on containers, labs, waste bins, and signage involving infectious agents, recombinant DNA, or other biohazards.

Used in laboratories, healthcare facilities, waste management, and biosafety protocols to indicate the presence of biological hazards. Matches user intent for safety education, regulatory compliance, or hazard identification resources.