- superior design & styling
- microprocessor-controlled diagnostic system with digital display & audible alarm
- negative pressure double-wall housings for containment
- all stainless steel work zone construction with radiused corners
- spacious work zone interior
- smooth & effortless sliding tempered glass window, closes completely
- hourmeter
- delayed-automatic-off timer
- elapsed / event timer
- automatic/selectable boost mode for increased containment
- ISO Class 5 (Class 100) air cleanliness work zone for absolute product protection
- ZERO-LEAK airflow system for enhanced safety
- reliability-proven design & performance
- Gelman BioClassic Class II Type A2 Series Laminar Flow Biological Safety Cabinets are designed to provide a high degree of personnel, product and environment protection for work with low to moderate risk biological agents that require Biosafety Level 1, 2 or 3 containment. When ventilated to the outside atmosphere via a facility exhaust system after HEPA filtration, the cabinets are suitable for work with biological agents treated with minute quantities of volatile toxic chemicals and trace amounts of radionuclides that will not interfere with the work if recirculated in the downflow air.
The BioClassic Class II Type A2 Series cabinets maintain a minimum average inflow velocity of 100 fpm through the work access opening. An effective air barrier between the operator and the work zone, maintained by an inflow of room air into a full-width front grille in the work opening provides personnel and environment protection. The barrier air blends with the contaminated work area air in a sump beneath the work surface and is partially recirculated back to the work area through a supply HEPA filter on top of the work zone. The recirculated air is HEPA-filtered to create a biological-clean work environment for product protection. The remaining contaminated work area air is exhausted to the laboratory or outside atmosphere after HEPA filtration. The BioClassic Class II Type A2 Series cabinets have all biologically contaminated ducts and plenums under negative pressure. The GELMAN ZERO-LEAK airflow system ensures that all positive pressure zones are surrounded by negative pressure zones to contain potentially-hazardous aerosols.
