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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 differ - ent 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.
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The Biosafety Airtight Pass Box is a specialized item transfer device designed for high-level biosafety laboratories (BSL-3/4, ABSL-3/4) and environments with strict airtightness requirements. It solves the airtightness challenge of logistics channels through dual mechanical and inflatable sealing (highly elastic + inflatable sealing rings), achieving a leakage rate <0.5% vol/h under -500Pa pressure. Equipped with a VHP disinfection interface and double-door interlock system, it prevents direct connection between low and high-pollution probability areas, effectively reducing contamination during item transfer. Constructed with high-quality stainless steel, it offers strong corrosion resistance and meets the rigorous safety standards of biosafety laboratories.
In BSL-3/4 laboratories handling pathogenic microorganisms or hazardous biological materials, the pass box ensures airtight transfer of samples, culture media, or protective equipment. The dual-sealing system and VHP disinfection function eliminate the risk of pathogen leakage, protecting laboratory personnel and the external environment.
For pharmaceutical plants with high disinfection requirements (e.g., antibiotic production, toxic drug synthesis), the pass box transfers items between high-pollution production areas and clean zones. The VHP disinfection interface connects to VHP equipment for thorough item disinfection, complying with GMP contamination control standards.
In animal biosafety laboratories (ABSL-3/4), the pass box transfers animal feed, bedding, or experimental equipment between non-clean and clean animal rooms. The structural pressure resistance (≥2500Pa) and airtight design withstand high-pressure disinfection processes, while the corrosion-resistant stainless steel construction resists animal waste and disinfectants.
Dual sealing (mechanical + inflatable) ensures airtightness, with leakage rate <0.5% vol/h under -500Pa pressure.
VHP disinfection interface supports connection to VHP equipment, enabling validated disinfection of internal space and items.
Double-door interlock system (mechanical + electronic) prevents simultaneous door opening, avoiding cross-contamination.
High-quality stainless steel construction offers resistance to disinfectants, acids, alkalis, and other chemical reagents.
Self-cleaning ability: After starting the self-circulating fan, internal cleanliness reaches Class A purification requirements.
Fully sealed electrical interlocking device box allows on-line maintenance without breaking airtightness.
Our professional team provides specialized technical support for high-level biosafety projects. Services include customized pass box design based on laboratory layout and airtightness requirements, on-site installation and airtightness testing (using pressure decay methods), and VHP disinfection system integration. We offer training on interlock operation and VHP disinfection procedures, supply genuine replacement parts (e.g., sealing rings, fans), and provide after-sales maintenance inspections. Additionally, we supply comprehensive documentation, including airtightness test reports and corrosion resistance certificates, to meet biosafety regulatory compliance.
A1: Airtightness is tested using the pressure decay method: the inner cavity is pressurized to -500Pa, and the pressure drop is monitored over time. The product meets the standard if the leakage rate is <0.5% vol/h. We provide official test reports before delivery, and on-site re-testing can be arranged during installation.
A2: The pass box is designed with a universal VHP disinfection interface, compatible with most commercial VHP generators. Our technical team can verify compatibility with your existing VHP equipment and provide connection guidance. We also offer VHP disinfection parameter recommendations based on item type and disinfection requirements.
A3: The mechanical devices and rubber components have a temperature environmental adaptability of -40°C to +50°C, enabling stable operation in extreme laboratory environments (e.g., cold storage or high-temperature disinfection areas).
