Biohazard Symbol | Official Warning Sign for Biological Hazards #1688814 (License: Personal Use)

This high-contrast black-and-white biohazard symbol consists of three interlocking arcs radiating from a central circle, enclosed within a larger circle. Designed in 1966 by Charles Baldwin, it was created to be instantly recognizable regardless of language or literacy. It is mandated by OSHA and WHO for labeling containers, equipment, and areas containing pathogens, toxins, or other biohazardous substances.

Used on laboratory doors, medical waste containers, biosafety cabinets, and hazard signage; serves to alert personnel and the public to potential exposure risks from biological agents like viruses, bacteria, or recombinant DNA.