class 100 Bio Safety Cabinets Class I
class 100 Bio Safety Cabinets Class I
class 100 Ceiling Laminar Airflow
Bio Safety Cabinets Class I
Class I BIOSAFETY is designed for operator and environment protection from hazardous materials and substances for operator's health. The operation is based on the forced removal of hazardous substances from the working zone through the air up-flow, with high-effective air filtration and exhausting the air into the environment.
Due to the unidirectional laminar air flow, there is no risk of their cross-contamination when there are more than 2 agents working on the equipment.
Laboratory Biosafety Manual.
Second Edition (revised). Interim guidelines. World Health Organization. p32.
| Class | Inflow Velocity m/s |
Recirculation of Air (%) | Exhaust Air (%) |
Control Plenum surrounded By | Exhaust Alternatives | Biosafety Level |
| Class I | US: 038 EN: 0.70 |
0 | 100 | Outside Air | Inside room / |
1, 2 & 3 |
| Class II A1 |
US: 038 EN: 0.40 |
70 | 30 | Outside Air | Inside room / Hard duct |
1, 2 & 3 |
| Class II A2 |
US: 050 EN: 0.40 |
70 | 30 | Negative Plenum | Inside room / Hard duct |
1, 2 & 3 |
| Class II B1 |
US: 050 EN: 0.40 |
30 | 70 | Negative Plenum | Hard Duct Only | 1, 2 & 3 |
| Class II B2 |
US: 050 EN:NA |
0 | 100 | Negative Plenum | Hard Duct Only | 1, 2 & 3 |
| Class III | Closed:* >0.5”WC |
0 | 100 | Negative Plenum | Inside Room/Hard Duct | 1, 2, 3 & 4 |
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