Esco » Biological Safety Cabinets » Products: Labculture® Class II Type B2 (Total Exhaust) Biosafety Cabinet
Labculture® Class II Type B2 (Total Exhaust) 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, most likely 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.
Key Benefits:
- NSF certified to NSF/ANSI 49
- SFDA certified to YY0569
- 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.
| Model No. | External Dimensions (mm) |
Internal Dimensions (mm) |
Airflow Velocity (Inflow) |
Airflow Velocity (Downflow) |
Electrical |
| LB2-3B2 | 105(fpm) | 70(fpm) | 110-120V,AC, 60Hz,1ø | ||
| LB2-4B2 | 105(fpm) | 70(fpm) | 110-120V,AC, 60Hz,1ø | ||
| LB2-5B2 | 105(fpm) | 70(fpm) | 110-120V,AC, 60Hz,1ø | ||
| LB2-6B2 | 105(fpm) | 70(fpm) | 110-120V,AC, 60Hz,1ø |
Esco offers a variety of options and accessories to meet local applications. Contact Esco or your local Sales Representative
for ordering information.
Support Stands
- Fixed height, available 711 mm (28") or 864 mm (34")
- With leveling feet, ±38.1 mm (1.5")
- With casters
- Telescoping height stand for leveling feet, nominal range 660 mm or 960 mm (26" or 37.8")
- Telescoping height stand for casters, nominal range 660 mm or 880 mm (26" or 34.6")
- Adjustable in 25.4 mm (1") increments
- Cradle stand, electrical hydraulic, infinitely adjustable, with casters
- Elevates to accommodate a sitting or standing user's work surface height
- When lowered permits movement through standard doorway
Electrical Outlets and Utility Fixtures
- Electrical outlet, ground fault, North America
- Electrical outlet, Europe / Worldwide
- Petcock (air, gas, vacuum)
- North America (American) style
- Europe / Worldwide style DIN 12898, DIN 12919, DIN 3537
Cabinet Accessories
- Germicidal UV lamp
- Controlled by automatic UV lamp timer through Sentinel microprocessor control panel
- Emission of 253.7 nanometers for most efficient decontamination.
- Lamp is positioned away from operator line-of-sight for safety and proper exposure to interior surfaces.
Note: UV lamp intensity reduces over time and its effectiveness is subject to factors such as relative humidity in the cabinet, ambient air temperature and microbial species in the work zone.
- PVC armrest
- Chemically treated, improves operator comfort, easy-to-clean. 711 mm (28") standard size
- Ergonomic lab chair
- Laboratory grade construction, meets Class 100 cleanliness; alcohol resistant PVC materials
- Adjustable height 395-490 mm (15.6"-19.3")
- Ergonomic foot rest
- Angled, helps maintain proper posture
- Adjustable height
- Anti-skid coating, chemical resistant finish
- IV bar, with hooks
- Stainless steel construction
- Available for all standard Esco cabinets
- Microscope viewing device
- 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 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.
- All air in the common plenum is HEPA filtered and exhausted via a dedicated ducting system to the external environment.
| STANDARDS COMPLIANCE | BIOSAFETY CABINETS | AIR QUALITY | FILTRATION | ELECTRICAL SAFETY |
| NSF/ANSI 49, USA* SFDA YY-0569, China |
ISO 14644.1, Class 3, Worldwide JIS B9920, Class 3, Japan JIS BS5295, Class 3, Japan US Fed Std 209E, Class 1 USA |
EN-1822 (H14 & H13), Europe IEST-RP-CC001.3, USA IEST-RP-CC007, USA IEST-RP-CC034.1, USA |
UL 61010-1, USA CAN/CSA-C22.2 No.61010-1 EN 61010-1, Europe IEC 61010-1, Worldwide |
* LB2-4B2 and LB2-6B2 are NSF certified. LB2-3B2 and LB2-5B2 are built to NSF standard 49, but not certified.