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Core Value of the Pass Box

2025-12-26

In pathology laboratories, specimen transfer runs through the entire diagnostic workflow. Although often overlooked, the pass box is a critical safety interface between contaminated areas and clean zones, directly affecting biosafety, specimen integrity, and operational efficiency.

A pass box is a sealed transfer unit installed within the wall, designed for material transfer between different functional areas. Through airtight construction and a dual-door interlock system, it effectively blocks the spread of harmful gases such as formaldehyde and xylene, as well as aerosols. It meets the basic requirements of BSL-2 laboratories and significantly reduces the risk of cross-contamination.

The unit is typically constructed from SUS304 or SUS316 stainless steel, featuring a rounded internal design for easy cleaning and no hygiene dead corners. UV sterilization is provided as standard, with optional HEPA self-purification systems to further enhance safety and transfer efficiency. Properly integrated into laboratory workflows, the pass box minimizes personnel movement and gowning procedures, ensuring standardized and efficient specimen transfer.

More than just a piece of equipment, the pass box reflects the laboratory’s biosafety management level and workflow design capability. It is a true “silent guardian” safeguarding diagnostic quality in pathology laboratories.

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