0.38m/S Class II B2 Biosafety Cabinet 100 Percent Air Exhaust

China 100% Air Exhaust Class II B2 Biosafety Cabinet

Class II B2 Biosafety Cabinet working principle:
The biological safety cabinet is a box-shaped air purification negative pressure safety device that can prevent dangerous or unknown biological particles from being contained in aerosols during operation.

Its working principle is mainly to pump in the air inside the cabinet to maintain the negative pressure inside the cabinet, thereby protecting the operator through vertical airflow. The outside air is filtered through the HEPA filter and then enters the safety cabinet to avoid contamination of the sample. The air in the cabinet is also filtered through HEPA filters and then discharged into the atmosphere to protect the environment.

Class II B2 Biosafety Cabinet Features:
1. 10° tilt design, more ergonomic
2.  Vertical flow negative pressure machine type,
3.  Safety interlocking device for lighting and disinfection system
4.  HEPA high efficiency filter can filter more than 99.99% of 0.3um dust particles
5.  Digital display LCD control interface, fast and medium. Slow three speed
6.  The working area is made of SUS304 brushed stainless steel, which is strong, durable, easy to clean and anti-corrosion
7.  Standard configuration is 160mm in diameter, 1 meter long exhaust pipe and elbow
8.   Work area is equipped with five-hole socket

The structure of the Class II B2 Biosafety Cabinet:

Biological safety cabinets generally consist of two parts: a box and a bracket. The cabinet part mainly includes the following structures:

1.  Air Filtration System

The air filtration system is the most important system to ensure the performance of this equipment. It consists of a driving fan, an air duct, a circulating air filter and an external exhaust air filter. Its main function is to continuously bring clean air into the working room, so that the flow rate of the sinking airflow (vertical airflow) in the working area is not less than 0.3m/s, and ensuring the cleanliness of the working area reaches Class 100. At the same time, the external exhaust flow is also purified to prevent environmental pollution.

The core component of the system is a HEPA filter, which uses a special fire-resistant material as the frame. The frame is divided into grids with corrugated aluminum sheets, filled with emulsified glass fiber sub-fine particles, and its filtration efficiency can reach 99.99% to 100%. The pre-filter cover or pre-filter at the air inlet makes the air pre-filtered and purified before entering the HEPA filter, which can extend the service life of the HEPA filter.

2.  External exhaust air box system

The external exhaust air box system consists of an external exhaust air box shell, a fan and an exhaust duct. The external exhaust fan provides exhaust power to extract the unclean air in the working room, and it is purified by the external exhaust filter to protect the samples and the experimental items in the cabinet. Due to the external exhaust, the working room is under negative pressure to prevent The air in the work area escapes to protect the operator.

3.  Sliding front window drive system

The sliding front window drive system is composed of the front glass door, door motor, traction mechanism, drive shaft and limit switch, etc. The main function is to drive or traction each door shaft so that the front glass door is in the normal position during the operation of the equipment.

4.  The illuminating light source and ultraviolet light source are located inside the glass door to ensure a certain brightness in the working room and to sterilize the countertop and air in the working room.

5. On the control panel, there are devices such as power supply, ultraviolet lamp, lighting lamp, fan switch, and control the movement of the front glass door. The main function is to set and display the system status.