Labculture® Class II Type B2 Biosafety Cabinet

Operator, Product and Environmental protection against Microbiological Agents and Chemical Fumes

Incorporating all the latest design features available on Esco's NSF-listed Labculture® Class II Type A2 biosafety cabinet, Esco Labculture® Class II Type B2 biosafety cabinets are designed to provide operator, product and environmental protection in experiments where recirculation of filtered air is prohibited, probably due to the presence of chemical fumes emitted during the process.

Chemical fumes cannot be captured by the filters and will be harmful to the operator if re-circulated in the laboratory space. Hence, Class II Type B2 cabinets have to be ducted to an external blower for total exhaust. Similar in design to the Class II Type A2, the cabinet is suitable for experiments involving general microbiological work with agents assigned to biological safety levels 1, 2, or 3.

Product Highlights

• Unique Esco Dynamic Chamber™ plenum.
• Negative pressure plenum surrounds supply positive pressure plenum; no fabric bags are used.
• Long-life supply ULPA filter (per IEST-RP-CC001.3) with >99.999% efficiency for particle size between 0.1 to 0.3 microns.
• Angled supply filter matches cabinet profile to achieve best downflow uniformity.
• Esco Sentinel™ microprocessor.
• Frameless, shatterproof sash is easier to clean.
• Ergonomically angled front improves reach and comfort.
• Actual work access height is 45 mm (1.8”) higher than tested sash opening to provide additional work space.
• Removable one-piece work surface simplifies cleaning.
• Raised airflow grille maintains safety by preventing blockage.
• Optional UV lamp is located behind control panel away from line of sight. (Does not apply to 1.8 m / 6' models.)
• Esco Isocide™ antimicrobial coating on all painted surfaces minimizes contamination.
• Enhanced side-capture zones optimize containment.
• Work area on Esco 0.9 meter (3') cabinet is equivalent to work area offered on larger 1.2 meter (4') conventional cabinet.

Airflow Diagram

Ambient air is pulled through the front grille to prevent contamination of the work surface and work product. The inflow does not mix with the clean air within the cabinet work zone. Inflow air travels through a return path toward the common air plenum (blower plenum) at the top of the cabinet. Ambient air is taken in through a prefilter at the top of the cabinet, and passes through the downflow ULPA filter, entering the work zone as laminar flow. The uniform, non-turbulent air stream protects against cross contamination within and throughout the work area. Near the work surface, the downflow air stream splits with a portion moving toward the front air grille, and the remainder moving to the rear air grille. A small portion of the ULPA filtered downflow enters the intake perforations at the side capture zones (small blue arrows).

The uniform, non-turbulent air stream protects against cross contamination within and throughout the work area. Near the work surface, the downflow air stream splits with a portion moving toward the front air grille, and the remainder moving to the rear air grille. A small portion of the ULPA filtered downflow enters the intake perforations at the side capture zones at a higher velocity (small blue arrows). A combination of inflow and downflow air streams forms an air barrier that prevents contaminated room air from entering the work zone, and prevents work surface emissions from escaping the work zone. The downflow combined with the inflow air enters the common air plenum.

Optional Accessories

• Support stand with leveling feet or castor wheels.
• Hydraulic support stand with motorized height adjustment capabilities.
• Exhaust Collar for thimble ducting.
• Germicidal UV lamp for sterilization of cabinet interior.
• Ergonomic Labchair.
• PVC arm rest.
• Ergonomic footrest.
• Electrical socket outlets.
• Service fixtures.
• IV bar with hooks.

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