Pass Box

A dynamic pass box is a cubicle box which has got interlocked doors located on both sides. This protects the controlled environment from being polluted while the transfer of material is taking place inside. A static pass box, on the other hand, has got an electromagnetic interlocking arrangement which is located between the two doors. The arrangement is fitted with an LED indicator which helps to show whether any door is open.

The static pass boxes which are known to transfer materials between two clean environments which are equally clean and are designed to work with minimal personnel movement while dynamic pass boxes are used to pass through materials from an uncontrolled environment to a controlled environment. A static pass box should never be used to transfer material between a clean room and a non-clean room.