Biohazard Symbol - Universal Warning Sign for Biological Hazards #81440 (License: Personal Use)

This high-contrast white-on-black biohazard symbol features three interlocking arcs forming a trefoil shape, optimized for visibility and universal recognition. Created in 1966 by Charles Baldwin, it was designed to be unmistakable even when viewed upside down or from a distance. It is standardized by ISO 3864 and used globally to mark biological substances that pose a threat to human health.

Used on lab equipment, waste containers, protective gear, and signage in healthcare, research, and industrial settings; matches user intent for safety compliance, hazard identification, or educational material about biosafety symbols.