Biohazard Symbol - Universal Warning Sign for Biological Hazards #1478671 (License: Personal Use)

This high-contrast black-and-white biohazard symbol features three interlocking crescent shapes radiating from a central point, forming a trefoil pattern. Created in 1966 by Charles Baldwin at Dow Chemical, it was engineered for maximum visibility and universal comprehension regardless of language or literacy. It is standardized under ISO 3864-3 and used globally to mark biological agents, medical waste, and contaminated areas.

Used on lab equipment, waste containers, signage in healthcare and research facilities, and emergency response materials; matches user intent for safety compliance, hazard identification, or educational content about warning symbols.