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The performance of an impactor can be accurately predicted, if design criteria which were numerically developed and experimentally proven, are adhered to. Based on these criteria, charts have been(More)
An extension of the archival calibration of the recently developed 30-100-L/min seven-stage impactor, the Next Generation Pharmaceutical Impactor (NGI), has been undertaken at 15 L/min. The NGI stage(More)
A new seven-stage cascade impactor, the Next Generation Pharmaceutical Impactor (NGI), has been developed for the pharmaceutical industry. A calibration following "good laboratory practice (GLP)"(More)