Biohazard Symbol - Official Warning Sign for Biological Hazards #1806353 (License: Personal Use)

This high-contrast black-on-orange symbol is the standardized biohazard warning sign defined by ANSI Z35.1 and ISO 3864-3. Designed in 1966 by Charles Baldwin at Dow Chemical, it conveys danger from biological agents without relying on language or literacy. Its distinctive trefoil shape ensures immediate recognition in laboratories, hospitals, and waste disposal facilities.

Used on containers, doors, equipment, and signage where biological hazards (e.g., pathogens, bloodborne agents, recombinant DNA) are present. Matches user intent for safety compliance, hazard education, or regulatory reference.