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This report documents the results of an evaluation of a portable, passive cryogenic sampler designed for the collection of whole air samples without loss or concentration of any. atmospheric constituents. The design criteria included:

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Many monitoring activities require the collection of who!e air samples over an extended time interval without loss or concentrationof any atmosphericconstituents. Described is the development and laboratory testing of a whole air sampler capable of collecting a 100 liter sample over a period of 0,63 days. The samplerhas an empty weight of 7.79 kg and an overall size of 20.8-cm x 20.8-cm x 66.1-cm. The conceptual design for the development of smaller, higher-performancewhole air samplers is also reported.