| Customization: | Available |
|---|---|
| Optional Accessory: | Timer Switch, Sterilization Lamp |
| Noise: | 40-60db |
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Pass box also known as a transfer chamber or pass-through box, is a piece of equipment commonly found
in cleanrooms, laboratories, and other controlled environments. It serves as a secure and contained way to
transfer materials between two spaces with different levels of contamination control.The basic principle of
a pass box is to prevent direct contact between the two areas and reduce the potentialfor cross-contamination.
Items are placed into the pass box from one side, the door is closed and then, typically through an interlocking
mechanism, the door on the other side can be opened to retrieve the items, ensuring that there is no direct
airflow or material transfer between the rooms.
1.Interlocking Doors: Pass boxes usually have doors on both sides that operate with an interlock system.
This means that when one door is open, the other remains locked to prevent air exchange between the two
environments.
2.HEPA Filters: Dynamic pass boxes often incorporate High-Efficiency Particulate Air (HEPA) filters to maintain
a clean airflow within the pass box. These filters remove particles down to extremely small sizes, helping to
minimize contamination risks.
3.UV Light Sanitization: Some pass boxes have built-in ultraviolet (UV) lights for sterilizing the interior before
and after each use. UV light kills bacteria, viruses, and other microorganisms that might contaminate the
transferred materials.
4.Laminar Flow: Advanced pass boxes can provide laminar flow, which ensures a steady, unidirectional flow of
filtered air across the work area to further minimize contamination.
5.Construction Material: They are usually made of stainless steel for durability, ease of cleaning, and resistance
to corrosion.
6.Size and Design: Pass boxes come in various sizes to fit different requirements and can be floor-standing or
wall-mounted.
| Type | Static Pass Box | Dynamic Pass Box | ||||
| Model | PH-01 | PH-02 | PH-03 | PHD-01 | PHD-02 | PHD-03 |
| External size(mm) | 660*500*580 | 760*600*680 | 860*700*780 | 660*500*1400 | 760*600*1500 | 860*700*1600 |
| Internal size(mm) | 500*500*500 | 600*600*600 | 700*700*700 | 500*500*500 | 600*600*600 | 700*700*700 |
| Material | SUS304 Stainless steel | |||||
| Interlock | Electronical | |||||
| UV Lamp | 30W*1 | |||||
| HEPA Filter | / | Efficiency≥ 99.999% at 0.3um | ||||
| Clean air speed | / | 0.36~0.54m/s | ||||
Pre-treatment: Place the item in the transfer window and close the transfer window door.
Vaporization: The hydrogen peroxide solution in the equipment is heated to evaporate into the gaseous VHP.
Circulation distribution: Through a fan or specially designed air flow system, the VHP gas circulates inside the transfer window to ensure that the gas is evenly distributed and fully touches all surfaces of the item to be sterilized.
Disinfection stage: Maintain a certain concentration and time of VHP environment, usually according to the type of items and disinfection needs to set specific parameters, in order to achieve the purpose of thorough sterilization.
Ventilation and exhaust: After the end of the disinfection cycle, open the exhaust system to discharge the residual VHP gas, and some systems will also carry out air purification treatment to ensure emission safety.
Safety testing: Some advanced VHP transfer Windows are equipped with residual gas detection devices to confirm that the VHP concentration is below the safety threshold before opening the transfer window door and taking out the sterilized items.
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