More Knowledge About Pass Through Box
Nowadays, cleanroom working is becoming more and more important, so pass through box, air shower, air booth is becoming popular.
Pass through box is one of the cleanroom systems, which is commonly used to move goods from one side to the other through a regulated environment in order to prevent airborne cross contamination. The interlocking door mechanism is the key component of a pass box; when the door on one side is open, the door on the other side stays closed. It is frequently used in microbiology laboratories in the food, pharmaceutical, and chemical sectors. And it has other names like cleanroom pass through, clean transfer window, and transfer hatch, etc.
In the market, pass through box usually be designed in two types:Static Pass Box and Dynamic Pass Box.
Static Pass Box
Dynamic Pass Box
The common features of the two kinds of pass box
● Interlock doors
● UV lights & Fluorescent / Visible lamps with switches
● 2 or 3 doors
● UV light Hour meter
The specific features of the two kinds of pass box
Static Pass box
● Has no ventilation (air supply or extract) provision and is only installed between two cleanroom spaces with the same classification levels.
● It is equipped with UV lighting and has s a passive pass box. It is mostly used between the same classifications of air.
● It should never transfer the good from a clean room to a non-clean room or from a non-clean room to a clean room.
● Doesn't have a filter.
Dynamic Pass Box
● Material is passed through vertically HEPA filtered air that is fitted between clean room regions of different classification levels.
● It has another name "Active Pass Box", and they are also equipped with UV light.
● Has interlocked door on both sides.
● Equipped with an interlock guard mechanism, which helps to regulate both the exit and the inlet so that they are never opened at the same time. As a result, materials being conveyed to the manufacturing area are cleaned of dirt and other loose particles, and vice versa.
● Designed with a stainless steel 0.3 micron suction filter and an aluminum 10 micron supply filter.
What kinds of pass box do you need?
The final requirements must be taken into account when choosing the sort of pass box to purchase. A dynamic pass box is an obvious choice when creating a new clean room or for existing clean rooms since it gives flexibility and may be used to transfer items from uncontrolled to controlled environments. To keep contaminants at bay and enable the clean room to receive higher clean certification, it is equipped with a HEPA filter and other advanced air handling machinery.
Choose a pass box with smooth surfaces, no matter what style best meets your requirements, so that cleaning and upkeep are less of a hassle. Make sure to ask for a material that does not negatively react with chemicals in cleaning products if the typical construction material is not stainless steel.
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