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Special Issues-01-02-2005
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In-Line Process Analysis of Residual Moisture in a Fluid Bed Granulator-Dryer Using NIR Spectroscopy (PDF)

The authors describe the in-line moisture measurement of a pharmaceutical granulation of lactose, microcrystalline cellulose, and crospovidone in a fluid bed granulator-dryer using top sprayed granulating liquid. A near-infrared (NIR) prediction model was developed for moisture on spectra collected during a calibration run. Subsequent granulations were analyzed for moisture content real-time throughout the granulation and drying process using the NIR process instrument.

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Robert Ewing of the Pacific Northwest National Laboratory. | Photo Credit: Will Wetzel
Robert Ewing of the Pacific Northwest National Laboratory. | Photo Credit: Will Wetzel