Transcription of 4 Biosafety Levels - Centers for Disease Control and ...
1 4 Biosafety Lab Levels BSL1 washing hazards warning protective BSL2 washing hazards warning containment protective BSL3 (with risk-based enhancements) tight when , double-door shower out (risk-based enhancement) hazards warning washing containment air purifying respirator (risk-based enhancement) HEPA filter (risk-based enhancement) decontamination system (risk-based enhancement) BSL4 , double-door hazards warning washing containment pressure protective shower shower and exhaust HEPA decontamination system