Testing

    Recommended Tests per Class
    Class 1 10 100 1,000 10,000 100,000
    Floor Count * * * * * *
    Velocity * * * * ** **
    Static Pressure * * * * * *
    Face Scan * * 1 1 1 4
    Laminarity * * 1 2 N/A N/A
    Parallelism * * 1 2 N/A N/A
    Recovery * * * 1 1 1
    Temperature Humidity Light Sound 3 3 3 3 3 3
    * Required test
    **Recommended test

    1. New projects only

    2. Raised floor designs only

    3. Customer/manufacturer dependent

    4. Design may not allow face scan

    Floor Count: Air samples taken by a particle counter at a height of 32" to 40" above the floor (sample times and air volume typically are 1 minute and 1 CFM).

    Velocity: The speed of the air coming out of a filter (FPM feet per minute) assures even airflow through a room and gives you air change ratios.

    Static Pressure:

    Filter: The amount of force it takes for air to pass through a filter.
    Room: The pressure difference of one room to another. Ex. main cleanroom vs. a gowning room vs. a hallway.

    Face Scan: Testing the filter by passing a particle sample probe across its face looking for small pin hole leaks.

    Laminarty: Airflow patterns within a room.

    Parallelism: Indicates how straight the airflow is over a given distance.

    Recovery: How quickly the room or area will clean itself up and return to normal. Temperature, Humidity, Light, and Sound: The rated performance of each item at specified locations (typically 4'-10' on center).

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Class Limits


Testing


USP797


Definitions


Annual Maintenance Contract.


1) AHUs, Cleanrooms, Laminar Flow work stations.
2) Largest inventory of air filters [20, 10, 5, 3 micron] pre filters and hepa filters.
3) Room differential pressure management.
4) Periodical testing & Validation of cleanrooms.