Pass Box is a kind of supporting equipment for clean room. It is mainly used to pass the small articles between clean room and unclean room. Pass Box is designed to minimize traffic and contamination entry into the clean room. Enables parts, tools, and other work item to be passed to and from the room, unit acts as an air lock device preventing ambient air from entering, or clean air from existing the clean room.
Controlling the ingress of particulate contamination into cleanrooms and other controlled environments is paramount in order to maintain the integrity of products and processes.
Personnel traffic is the most important factor which must be controlled. Pass Boxes are a cost effective solution as they allow materials to be transferred into the controlled environment without actual personnel movement. They may also be used to protect the external environment from egress of contamination, for example, in biological safety laboratory applications.