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The Marple-Miller Cascade Impactor Model 160 is specified as Apparatus 2 in the USP and is a five-stage cascade impactor which has been designed for determining the particle size (aerodynamic size distribution) of Dry Powder Inhalers (DPIs).
The Model 160 has five impaction stages and is calibrated for operation between 60 and 90 L/min. Each stage has a removable collection cup to assist in the quick and simple recovery of the drug particles with low inter-stage losses. A paper filter is incorporated after Stage 5 to ensure total mass balance.
Two other versions of the impactor are available, such that between the three impactors, a flow rate range of 4.9 to 90 L/min is covered.
In this impactor, particles are deposited directly onto the bottom of the stage collection cups which can then be easily removed after each test without dismantling the impactor.
For comprehensive product details, specifications and part numbers, please request a copy of our brochure “Quality Solutions for Inhaler Testing”.