Biological Safety Cabinet BMB-II-"Laminar-S."-1,2 SAVVY B2 Class II

Article 2E-B.003-12

Air flow scheme - Microbiological Safety Cabinet Class 2 (Biological Safety Cabinet Class 2)


Class II Type B2 Biosafety Cabinet ensures environment, product, and personal protection during lab procedures where the circulation of filtered air is restricted due to the existence of possible chemical fumes that are released during the process. Since the filter does not catch these chemical fumes, it can be of potential danger to the operator if they are re-circulated in the workspace. Therefore, Class II Type B2 Biosafety Cabinets are ducted to a blower that is located on the outside of the cabinet, for total exhaust.


  • hinged front sash made of laminated safety glass; opening, closing and upholding is carried out by gas springs;
  • damper against front sash closing impact;
  • side windows made of tempered glass;
  • slanted front surface of the cabinet;
  • work chamber lighting;
  • two electric sockets in the work chamber (in the right part of the rear wall);
  • airflow laminarization screen made of polymer micromesh;
  • three-section tabletop made of mirror stainless steel (AISI 304);
  • work chamber tray made of stainless steel (AISI 304);
  • removable armrest made of stainless steel (AISI 304)


  • pullout (when inoperative, is stored outside of the work chamber under the tabletop);
  • metal grille protecting the UV lamp;
  • dampers against any impact upon lowering the work opening screen.

Supply and Exhaust Air Filtration System:

  • two-stage filtration of the air coming into the work chamber: prefilter G4 and supply HEPA filter H14 located over the work chamber;
  • exhaust air coming out of the cabinet is cleaned by exhaust HEPA filter H14 located under the work chamber base;
  • two fans ensuring air supply into the work chamber;
  • two fans ensuring air exhaust from the cabinet;
  • removable exhaust hood for connecting the cabinet to the active exhaust system; the exhaust hood is equipped with joint clearance that prevents any impact of the exhaust system on the cabinet’s operation.

Control System Components

  • microprocessor control system;
  • pushbutton control panel with LCD screen;
  • electromagnetic reader and electromagnetic access keys;
  • airflow sensors;
  • front sash and UV unit position sensors;
  • individual fuse for power supply to the main functions of the cabinet (fan, lighting, UV lamp);
  • individual fuse for electric sockets of the work chamber;
  • removable power cord with holder

Additional Components:

  • caster wheels for cabinet relocation;
  • screw supports for cabinet fixation at operating site;
  • service wrench kit.

ATTENTION! The cabinet must be connected to an individual active exhaust system with a flow rate of 1135-1205 m3/h. The room where the cabinet is installed must have a supply ventilation system with a flow rate of not less than 1000 m3/h.

Main  characteristics of  the  biological   safety   cabinet   classII  type  B2  BMB-II-“Laminar-S.”-1,2 



Installation work chamber air cleanliness class for suspended particle (aerosol) concentration as per ISO 14644-1

-for particles of 0.5µm and more

-for particles of 5.0µm and more


ISO 5 

ISO M (20; ≥5µm); LSAPC

Class of the cabinet according  to EN 12469-2010, NSF/ANSI 49 II
Type of the cabinet according to NSF/ANSI 49 B2
Class of the installed in the cabinet НЕРА-filters according to EN 1822-1 Н14
Class of the installed preliminary filter according to EN 779 G4
Average downflow velocity in the work chamber, m/s 0,35+0,01
Average velocity of the air inflow though the work opening, m/s, not less than 0,47±0,03
Illuminance level in the work zone, lux, not less than 1000
Air recirculation rate in the cabinet, % missing

Main parameters and dimensions of the biological safety cabinet class II type B2 BMB-II-“Laminar-S.”-1,2

Dimensions of the assembled cabinet with exhaust hood, mm (WхDхH)* 1200х810х2325
Dimensions of the cabinet’s work chamber, mm (WхDхH) 1105x610x705
Mass of assembled cabinet with the stand, kg, not more than 270
Input power of the cabinet (exclusively of the load on the built-in outlets), W, not more than 730
Maximum load allowed on the sockets, W 1000
Air volume supplied to the work chamber of the cabinet, m3/h 795-820
Air volume exhausted from the cabinet, m3/h 1180-1220

 * dimensions do not account for outstanding supports

Additional Options to biological safety cabinet class II type B2

  • Technical gas tap without electromagnetic valve
  • Vacuum tap without electromagnetic valve
  • Additional socket on the right/left
  • Two additional sockets on the left
  • LED lighting of the working chamber

Dimensional drawing of the BMB-II-“Laminar-S.”-1,2 



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