Labculture® Class II Type A2 Biosafety Cabinet
  Containment and Protection
  Cabinet Airflow
  Sentinel Microprocessor Control
  Cabinet Construction
  Engineering Details
  Technical Specifications
  Purchase Specifications
Labculture® Class II Type B2 Biosafety Cabinet
  Containment and Protection
  Cabinet Airflow
  Sentinel Microprocessor Control
  Cabinet Construction
  Engineering Details
  Technical Specifications
  Purchase Specification
 
Working Safely In Your Biological Safety Cabinet
Free Posters Available from Esco Biotech
Biohazard Safety Cabinet Classess
A Guide to Biosafety And Biological Safety Cabinets
Comparative Study of Cabinets
Comprehensive Performance Testing at Esco
 

North America
Esco Technologies, Inc.
2940 Turnpike Drive,
Units 15-16,
Hatboro, PA 19040, USA

Toll-Free: 1-877-479-3726
Phone: 215-441-9661
Fax: 215-441-9660
usa@escoglobal.com


Asia-Pacific
Esco Micro Pte Ltd
21 Changi South Street 1
Singapore 486777

Tel: +65 6542 0833
Fax: +65 6542 6920
mail@escoglobal.com

     
 
The airflow ratio of 63% recirculation to 37% exhaust increases operator protection beyond the 70%/30% ratio of conventional biological safety cabinets.
  • The inflow and downflow balance is precisely established by an external exhaust damper and is adjustable without decontaminating the cabinet.
  • Inflow of room air enters the front air grille to establish operator protection; room air does not enter the work zone, preventing product contamination.
    The front grille has proportionally larger perforations on the extreme left and right side. Combined with the side air gap between the work tray and the side wall, the stronger side capture zones increase protection in this critical area where contaminants tend to bleed out in conventional cabinets.
  • The convex inflow grille maintains operator protection by discouraging users from placing objects on it.
  • Auto-purge holes located at the front side walls eliminate eddy currents and dead air pockets in the critical area behind the sash window. Per NSF/ANSI 49 requirement, these side perforations do not extend completely to the work surface to prevent accidental liquid spills in the work zone from entering the side air column.
  • The ULPA downflow (supply) filter is tilted proportional to the cabinet front angle to direct more air forward to the front air grille.
  • The inflow velocity, downflow velocity, air flow path, and intake geometry are precision tuned and tested to create an optimum air curtain on the front aperture; this curtain maintains personnel and product protection even in the unlikely event of a severe inflow or downflow imbalance that would compromise protection in a conventional cabinet.
 
     
 
A combination of a supply ULPA filter and an exhaust ULPA filter give the Labculture cabinet a fully integrated performance envelope for product, operator and environmental protection.
  • ULPA filters (per IEST-RP-CC001.3), are tested to a typical efficiency of >99.999% for 0.1 to 0.3 micron particles; these provide better filtration capability than conventional HEPA filters that have a typical efficiency of >99.99% for 0.3 micron particles.
Esco cabinets use ULPA filters (per IEST-RP-CC001.3) instead of conventional HEPA filters commonly found in biological safety cabinets. While HEPA filters offer 99.99% typical efficiency at 0.3 micron level, ULPA filters provide 99.999% typical efficiency for particle sizes of 0.1 to 0.3 micron level.
  • Modern separator-less mini-pleat filter construction maximizes the filter surface area to extend filter life and eliminate possible filter media damage by thin and sharp aluminum separators used in conventional HEPA filter construction.
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    Esco cabinets use Swedish Camfil Farr® mini-pleat filters without aluminum separators to increase filter efficiency, minimize the chance of leakage, and to prolong filter life. Filters include a lightweight aluminum frame for structural stability and elimination of swelling common to conventional wood frames.

  • The filter frame and media is constructed in accordance with EN1822 requirements for fire retardant properties.
  • The supply ULPA filter provides ISO Class 3 (per ISO14644.1) clean air to the work surface in a gentle vertical laminar flow for product protection.
  • The exhaust ULPA filter traps biohazard particles acquired from the work surface before air is exhausted to the room, offering personnel and environmental protection.
  • The exhaust filter media is protected from mechanical damage by an integrated metal screen guard, which is absent from conventional HEPA filters.
  • The top cabinet surface is slanted to discourage users from placing objects which could block the exhaust filter and reduce inflow velocity.