Biosafety Cabinet Class II type B2

BMB-II-“Laminar-S”-1,2 (231.120)



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

  Cabinet's operating principle
in 3D

The biological safety cabinet class 2 Type B2 is designed for work with agents of biosafety levels 1, 2 and 3. It provides product, operator and environment protection.

Application of the microbiological safety cabinet class II type B2

  • Protection of an operator and environment from airborne infection when working with pathogenic biological agents (PBA) and microorganisms including highly (especially) hazardous pathogenic groups by their physical isolation (contamination and controlled removal);
  • Minimization of risks of external and cross contamination;
  • If connected to the individual active exhaust system, cabinet can be used for work with toxic chemical substances and radio nuclides in low quantities and for odor removal from the work agents. Exhaust hood for connection to the exhaust system is supplied with the cabinet.  
  • microbiological safety cabinet is designed to equip workstations in medical, pharmaceutical, and other institutes working with pathogenic biological agents and microorganisms.

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.

All other cases when cabinet should be connected to external exhaust system are for exploiting organizations’ decision based on the risks assessment.  

Application of the biosafety cabinet class II type B2

Absence of recirculation in the cabinet allows working with small amounts of toxic and chemical substances in the cabinet.

Distinctive features of the biological safety cabinet class II type B2

  • No air recirculation in the biosafety cabinet and a 100% filtered air removing to the room exhaust system provide an increased safety level of the cabinet Class II Type B2;
  • The cabinet has two independent filter-fan units providing air inflow and outflow.
  • Contaminated air goes through highly efficient purification and is completely exhausted into external exhaust system;
  • Due to connecting with an external exhaust system, the cabinet provides protection from toxic chemical substances and radionuclides.
  • Using the audio-visible alarm system, the system of monitoring the cabinet operating modes warns the operator about the air flow imbalance in the working chamber.
  • The biosafety cabinet is provided with screw supports for stationary fixation at the exploitation sight and with wheels for comfortable movement.
  • Positions of the front sash and of the UV unit are controlled by high-precision optical sensors.
  • LCD control system indicates system’s initiation, its possible malfunctions, and selected work modes;
  • DRIVE-N-ROLL technology allows for smooth and easy way to slide and store the UV unit under the table when operating in the cabinet.A unique pull out UV-unit is included into the basic configuration 


Main  characteristics of  the  biological   safety   cabinet   classII  type  B2  BMB-II-“Laminar-S”-1,2 (231.120)

Air cleanliness class in the working chamber of the cabinet for suspended particles content according to ISO 14644-1-2002 

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 1822-1-2010 Н14
Class of the installed preliminary filter according to EN 779-2014 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 (231.120)  

Dimensions of the assembled cabinet, 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 720
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 1135-1205

Additional Options to biological safety cabinet class II type B2

  • Multi-purpose taps
  • Extra outleta
  • LED lighting of the working chamber

Dimensional drawing of the BMB-II-“Laminar-S”-1,2 (231.120)

Dimensional drawing of the  Microbiological Safety Cabinet Class 2 (Biological Safety Cabinet Class 2) - of the BMB-II-“Laminar-S”-1,2 (231.120)