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Cleanroom Laminar flow Pass Box
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  • Product Details
  • Cleanroom Laminar flow Pass Box

     Laminar flow Pass Box is an auxiliary equipment for clean room, mainly for small objects passing between the clean room and non-clean areas or different pressure, different clean class of clean rooms, one played as an airlock roll to protect high pressure of high clean class level clean room not be released, also achieve self-cleaning effect during transfer process, in order to ensure the articles itself clean to access to clean area, reduce cross-contamination caused by the object ; its blowing leaching time adjusted in accordance with the manual switch that achieved maximum self-purification and energy-saving effect.


    1. Centrifugal fan                          2. Differential pressure gauge               3. Tank-style filter  

    4. Centralized control panel          5. DOP test port                                     6. UV lamp

    7. Diffuser plate                            8. Double-layer glass door                     9. Return air pre-filter 

    Performance Requirements:

    1. Laminar flow pass box cleanliness requirements: Class B;
    2. Inside and outside the double-shell, the inner corner with arc treatment to ensure seamless steel connection;
    3. laminar flow design, top supply bottom return air flow pattern;
    4. G4 primary filter and H14 HEPA filter double filtration;
    5. Airflow through HEPA filter outlet air velocity controlled in 0.38-0.57m / s ( tested 150mm under airflow outlet diffuser plate) ;
    6. Displays the filter differential pressure ( scale 0-500Pa of HEPA ), accuracy ± 5Pa;
    7. Fan start/stop button switch, built-in electronic interlock system, separate UV lamp switch;
    8. HEPA filter can be individually carried from the upper tank removal and installation, ease of maintenance and replacement of the filter;
    9. Set the access hole in the lower part of the pass box, for the maintenance of the fan ;
    10. Pass Box normal operation noise <65db;

    12. Airflow outlet diffuser plate: 304 stainless steel mesh panels.


    Main Technology Parameter:





    External Size(mm)

    W800xD690 xH1200

    W1000XD890 xH1400

    Working area Size(mm)

    W600XD600 xH600

    W800xD800 xH800

    Air velocity(m/s)




    Cabinet Material

    All stainless steel 304#

    HEPA filter



    HEPA efficiency


    Power of fan(W)


    Power supply




    Factory testing:  

    All of equipment is individually factory tested for safety and performance in accordance with international Standards. Each unit is shipped with a documentation outlining the tests undertaken and the unit’s individual results for each unit. 

    Factory test include:

    --appearance testing

    --functional test and visual inspection

    --electrical safety tests

    --air velocity testing

    --noise testing


    Our equipment is warranty for 1 year excluding consumable parts and accessories. 

    All equipment is shipped with a comprehensive use’s manual complete with a report documenting all test procedures.

    Additional IO/OQ/GMP document is available upon request.

    Contact our sales representative for specific warranty details or document request.  

    Consumable parts illustration:

    1: Pre-filter: each one should be replacement in each 6 month, but it can refresh no more three times.

    2: HEPA air filter: each one should be replacement in each half and one years. 

    Standard export packing:

    --Stretch film strapped whole cabinet,

    --Foam inside protected,

    --Plywood case solid fixed

    --European standard bottom tray