Pass Box

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.