Air sampler with parallel impactors

Measuring and testing – Sampler – sample handling – etc. – With constituent separation

Reexamination Certificate

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C073S863310

Reexamination Certificate

active

07073402

ABSTRACT:
An air sampler is designed for a predetermined flow rate. The air flow is admitted to at least two impactors operating in parallel. Preferably the inlet nozzles and the outlet orifices of each impactor are sized to achieve predetermined cut-off sizes of particles; preferably the composite curve of all the impactors will mimic a predetermined particle sampling efficiency curve.

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