Biohazard Symbol - Universal Warning Sign for Biological Hazards #131535 (License: Personal Use)

This high-contrast image displays the standard biohazard symbol: a bright yellow equilateral triangle enclosing a black trefoil (three interlocking circles with central dot), set against a solid black background for maximum visibility. Designed in 1966 by Charles Baldwin, the symbol is universally adopted to denote biological agents that pose a threat to human health, including viruses, bacteria, toxins, and medical waste. Its geometric simplicity ensures recognition across language barriers and under stressful conditions.

Used on laboratory doors, medical waste containers, PPE packaging, and biosafety signage; this image supports educational, regulatory, and safety compliance content where users seek authoritative visual references for hazard identification and risk communication.