Biohazard Symbol - Universal Warning Sign for Biological Hazards #1688803 (License: Personal Use)

This high-contrast red-and-white biohazard symbol, designed in 1966 by Charles Baldwin, consists of three interlocking arcs surrounding a central circle, forming a trefoil shape. It is standardized under ISO 3864-3 and universally used to denote biological substances that pose a threat to human health, such as viruses, bacteria, or medical waste. Its design ensures immediate recognition regardless of language or literacy.

Commonly used on laboratory equipment, medical waste containers, biosafety cabinets, and hazard signage in healthcare, research, and industrial settings. Matches user intent for safety education, regulatory compliance, or hazard identification resources.