The biosafety airtight pass box is mainly used in rooms with airtightness  requirements in high-level biosafety laboratories (BSL-3, BSL-4, ABSL-3,  ABSL-4), which can solve the airtightness problem of logistics channels. The  double doors of the airtight pass box are both mechanically and inflatably  sealed to ensure the airtightness of the logistics channel, i.e. the pass box  door panel is installed with a highly elastic sealing ring and an inflatable  sealing ring to form a double sealing belt between the door and the door  frame through the pressing mechanism. As an item transfer device, the pass  box is mainly used for transferring small items between the low-pollution  probability area and the high-pollution probability area, and its double  doors adopt interlocking devices to avoid direct connection between different areas. Besides, there is a VHP disinfection interface in the pass box,  which can be used to connect a VHP disinfection equipment to disinfect the  items in the pass box, thus effectively reducing the pollution occurring  during the transfer process.

Performance index：

1. Temperature environmental adaptability of mechanical devices and rubber components: -40°C~+50°C; 

2. Structural pressure resistance: ≥2500Pa; 

3. Airtightness: Keep the inner cavity of the pass box airtight under the pressure of -500Pa, with the leakage  rate <0.5% vol/h; 

4. Self-cleaning ability: After starting the self-circulating fan, the cleanliness inside the pass box can reach Class  A purification requirement; 

5. Disinfection mode: VHP disinfection can be performed on the internal space of the pass box and the internal  items, and the disinfection effect can be validated; 

6. Corrosion resistance: The product is made of high-quality stainless steel, resistant to disinfectants, cleaning  agents and acids, alkalis and other chemical reagents.

Product characteristics compared to similar products

1. The electrical interlocking device box is fully sealed and can be repaired online; 

2. With airtight design, it can meet the sealing requirements of airtight laboratories.