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Eight Stage Non-Viable Impactor
Series 20-800
Mark II
The Eight Stage Cascade Impactor utilizes eight jet stages enabling
classification of aerosols from 10 micrometers to 0.4 micrometers (at 28.3 lpm)
and allows airborne particulate to impact upon stainless steel impaction
surfaces or a variety of filtration media substrates. A final filter collects
all particles smaller than 0.4. Preseparators and special jet stages allow the
cascade impactor to operate at higher flow rates, specifically 60 lpm and 90 lpm,
enabling collection of submicron particulate. Additionally, there is an accessory
which allows 3 lpm flow rates, enabling classification of particles to 35
micrometers.
Pharmaceutical Research, Development and Approval
The Andersen Instruments 20-800 Series is specifically cited within various
world pharmacopeia (e.g., USP <601>) to characterize metered-dose and
powder dose inhalers, nebulizers, nasal sprays and other pulmonary drugs.
Andersen Instruments Non-Viable Cascade Impactors are especially relevant during
research, quality assurance and equivalency testing.
http://www.graseby.com/eight_stage.htm
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