Class I Biological Safety Cabinet

The class I biological cabinet is defined as an open fronted, negative pressure ventilated cabinet for personnel and environmental protection, with an unrecirculated air flow away from the operator. Class I cabinets are very similar in nature to a chemical fume hood except that they have a high efficiency particulate air (HEPA) filter on their exhaust outlet, and they may or may not be connected to an exhaust duct system. One limitation of the Class I cabinet is that is does not provide product protection.


  • Provides personnel and environmental protection
  • It is similar in air movement to a chemical fume but usually has a limited fixed work access opening and the exhaust air must be HEPA filtered, to protect the environment
  • Designed for general microbial research with low and moderate-risk agents
  • The work zone, which type is much smaller than a chemical fume hood, is geared to working with biological whose process/ producers dictates the use of moderate amounts of volatile liquids, that are suitable for recirculation cabinets

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Technical Features

Material of Construction (Main Body) Model No Dimensions
External (W x D x H) Internal (W x D x H)
CRCA / GI Powder Coated / Stainless Steel 304 MFD-BS/A1-600 750 x 875 x 2250 mm 610 x 610 x 610 mm
MFD-BS/A1-900 1050 x 900 x 2250 mm 915 x 610 x 610 mm
MFD-BS/A1-1200 1350 x 900 x 2250 mm 1220 x 610 x 610 mm
MFD-BS/A1-1800 1950 x 900 x 2250 mm 1830 x 610 x 610 mm
Material of Construction (Work Table) Stainless Steel 304
Average Air Velocity 90 ± 20% FPM
HEPA / ULPA Efficiency 99.997% / 99.999%
Class Level ISO 3 / 5 (Class 100)
Noise Level 65 ± 5 dB
Electrical 230 V, 50 Hz, Single Phase
Special Features Motor driven front door, alarm, HEPA filter blockage, timer for UV light, power socket inside the cabinet, pressure sensor monitoring, digital airflow verification,, interior eye level display, display parameters including down flow air velocity, total operating hours.
Standards US FED STD 209 E, ISO 14644-1, IEST- RP-CC-002-2, BSI
Certifications CE & ISO
Note: The above mentioned model are available with Microprocessor controls and Custom built types also