Biological Safety Cabinet - Class II Type B2

Introduction

A Biological Safety Cabinet (BSC) Class II Type B2 is a fully ducted biosafety cabinet designed for laboratories that work with biological agents along with volatile toxic chemicals and radionuclides. Unlike Type A2 cabinets, Type B2 cabinets operate on a 100% exhaust system, ensuring maximum environmental and personnel safety.

What is a Class II Type B2 Biological Safety Cabinet?

The Class II Type B2 BSC provides complete protection by:

• Preventing operator exposure through inward airflow

• Maintaining product protection with HEPA-filtered vertical laminar downflow

• Completely exhausting contaminated air through HEPA filtration

In this system, no air is recirculated inside the cabinet. All air is exhausted outside the laboratory via a hard-ducted exhaust system, making it suitable for chemical-biological combined applications.

Airflow Principle & Working

The cabinet functions on a vertical laminar airflow mechanism:

• Room air enters through the front intake grille

• Air passes through a supply HEPA filter for product protection

• Air moves downward over the work surface

• 100% of the air is captured, HEPA-filtered, and exhausted outside the building

This airflow design eliminates the risk of chemical vapor buildup inside the work area.

Key Features of Class II Type B2 BSC

• 100% exhaust, zero air recirculation

• Dual HEPA filtration (supply & exhaust)

• Hard-ducted exhaust connection

• Negative pressure plenums for enhanced safety

• Microprocessor-based airflow monitoring system

• Audio-visual alarms for airflow imbalance

• Stainless steel work surface

• Low noise operation despite high exhaust capacity

• Compliance with international biosafety standards

Applications

Class II Type B2 Biological Safety Cabinets are recommended for:

• Handling toxic, volatile chemicals with biological agents

• Work involving radionuclides

• Pharmaceutical R&D laboratories

• Chemical-biological research facilities

• Virology and high-risk microbiology labs

• Industrial and government research laboratories

Advantages of Class II Type B2 BSC

• Maximum personnel and environmental safety

• Eliminates chemical vapor recirculation

• Suitable for high-risk applications

• Ensures regulatory compliance for mixed-hazard work

• Reliable containment under all operating conditions

Maintenance Considerations

• Regular HEPA filter integrity testing

• Exhaust system inspection and airflow balancing

• Continuous monitoring of face velocity

• Annual certification by trained professionals

Conclusion

The Biological Safety Cabinet Class II Type B2 is the safest choice for laboratories that require complete exhaust of hazardous biological and chemical contaminants. Its 100% ducted airflow system ensures uncompromised safety, making it essential for advanced research and high-risk laboratory environments.

Specification

MODEL	LMBSF-401	LMBSF-202	LMBSF-203	LMBSF-204
TYPE	CLASS II, Type B2
CHAMBER MATERIAL	COLD-ROLLED STEEL COATED WITH ANTI-BACTERIA POWDER COATING
POWER	1050 W	1350 W	1550 W	1900 W
POWER SUPPLY	350 Kg	360 Kg	440 Kg	470 Kg
INNER DIMENSION	940x600x660mm	1100x600x660mm	1350x600x620mm	1600x670x630mm
OUTER DIMENSION	1100x750x2250mm	1300x850x2200mm	1500x760x2250mm	1800x840x2275mm
WEIGHT	350 Kg	360 Kg	440 Kg	470 Kg