NIOSH Mining Laboratory
Aerosol Physics Laboratory |
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| Marple chamber with a tapered element oscillating microbalance (TEOM) in the foreground, aerosol particle sizer (APS) to the right, and Flow Temperature Humidity Control System to the left |
The Aerosol Physics Laboratory is a 600 sq ft humidity and temperature controlled laboratory. The lab contains a Marple Aerosol Chamber, which is a specially designed apparatus used to create a very uniform distribution of various sized aerosols. The chamber is capable of producing a highly stable aerosol concentration that is essential when attempting to compare the aerosol sampling performance of various instruments. Uniformity of aerosol exposure is enhanced by a rotational platform in the chamber that slowly moves all instruments through equivalent areas of the chamber.
Ancillary equipment to support the chamber includes: Two TSI Inc. model 3400 Fluidized Bed Aerosol Generators, TSI Inc. model 3012 Radioactive Charge Neutralizer, TSI Inc. model 3321Aerodynamic Particle Sizer (APS), TSI Inc. model 3302A Aerosol Diluter, TSI Inc. model 3080 Electrostatic Classifier, Miller Nelson Research Inc. model HCS-401 Flow Temperature and Humidity Control System, R&P Co. Inc. model 1400A Ambient Particulate Monitor, MSP Corp. model M-03 Multi Orifice Ultra Low Pressure Impactor (MOUDI), Air flow controllers and calibration equipment. The laboratory also contains other aerosol generation and sampling equipment. It is used for the staging area for assembly and calibration of personal sampling equipment used for field evaluations.