Biosafety Facilities Designation
World Health Organization designates laboratory facilities under four level
| BIOSAFETY LEVEL | LABORATORY TYPE | LABORATORY PRACTICES | SAFETY EQUIPMENT | |
| 1 | Basic – Biosafety Level 1 | Basic teaching research | GMT | None: Open bench word |
| 2 | Basic – Biosafety Level 2 | Primary health services; diagnostic services, research | GMT plus protective clothing, biohazard sign | One bench plus BSC for potential aerosols |
| 3 | Containment – Biosafety Level 3 | Special diagnostic service, research | As Level 2 plus special clothing, controlled access, directional airflow | BSC and/or other primary devices for all activities |
| 4 | Maximum containment – Biosafety Level 4 | Dangerous pathogen units | At Level 3 plus airlock entry, shower exit, special waste disposal | Class III BSC, or positive pressure suits in conjunction with Class II BSC’s, double-ended autoclave(through the wall), filtered air |
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