Abstract: A method of monitoring the humidity of material being subjected to processing step using it humidity monitoring transducer, and transmitting humidity data from the monitoring transducer by wireless telemetry to a receiver external to the mass of material. If the material is a mass of material, the transducer can be embedded within the material. The method is particularly useful in the case of a material in a closed environment, such as packaging or if the material is in motion during the processing step, for example, when the mass of material is subjected to multiple pharmaceutical processing steps and/or plural dosage forms. The processing step can be, for example, pre-formulation, mixing, granulation, a coating step, in which a coating material is sprayed onto pharmaceutical dosage forms while the dosage forms are being tumbled.

Abstract: A multi-channel acoustic measurement device, which includes a plurality of acoustic detectors (3) and dual temperature control (1, 2). The device employs piezoelectric crystal (21) as the sensing material in the detectors and has an appropriate driving device (40) connected to the detectors for oscillating the piezoelectric crystals. The device may also include a user interface. Also disclosed is a method of measuring in label-free mode at least one property of a plurality of samples in parallel using a plurality of acoustic detectors (3) and dual temperature control (1, 2).