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  5. Envi - Model 1000M - NCTU Micro-orifice ...

Envi - Model 1000M -NCTU Micro-orifice Cascade Impactor - NMCI

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These cascade impactors are designed for sampling and collecting size-fractionated aerosol particle samples for gravimetric and or chemical analyses. That preferred by aerosol researchers worldwide for environmental and laboratory research.

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The new nozzle plates with smooth and sturdy structure fabricated by the LIGA process (Lithography, Electroplating- and Molding) are installed on the 7th-10th stages of the NMCI. The new nozzles show great performance on preventing nozzle clogging and allow for ultra-sonication to clean nozzles thoroughly. The particle collection efficiency curves of the NMCI have cutoff diameter rfpa50 that match well with the nominal values given in Marple et al. (1991).