biohazard symbols
Toxic warning markers
Biohazard symbols are the distinctive three-lobed warning signs marking materials dangerous to living organisms—infectious agents, contaminated blood, medical waste.
The iconic trefoil design, developed in 1966, appears on laboratory doors, sharps containers, and hazmat bags.
The symbol has become cultural shorthand for contamination or danger: biohazard tattoos, biohazard-themed video games.
- biosafetyProtection from biological hazards
- lab safetyPractices preventing research injuries
- CDC guidelinesFederal disease control recommendations
- toxicCapable of causing harm
- wasteUnwanted discarded material
contamination · quarantine · hazmat suit · dangerous · yellow · precaution · radioactive · infection · trefoil · warning · risk · chemicals · skull and crossbones · protective · chemical hazards · exposure · medical waste · sharps container
- safety signswarning sign, warning signs, danger sign, caution sign, warning labels