To complement the handling and measurement advantages of the newly developed sensors, we paired it with a completely in-house designed oscillator. Not only is it a handy device – measuring only 3.5 cm in height , length and depth and connected via USB-C to a laptop or PC – but it is also more stable in terms of crystal oscillation and connectivity. We have gone through the experimental process of tweaking the circuitry to have less sensitivity to viscous substances and there- fore improving stability during active experiments. While response e. g. during active nebulization in a Cloud exposure system is therefore a bit dif ferent , the measurements have been validated to match results of previous QCM designs. The oscillator is compatible to the sQCM 12 sensor and ready to use with older QCM models via an adapter. A sof tware update of the VITROCELL® Monitor Sof tware is required. sQCM Oscillator ○ Online measurement of particle dose in ng/cm2 ○ User-friendly mounting ○ Fast quartz exchange ○ Increased stability ○ Improved base line stability ○ Compatible with Cloud 12, Cloud Alpha 12 and VITROCELL 12 Exposure Module Series ○ Space-saving oscillator for better handling Features Skin Exposure Auxiliary Equipment Dose Monitoring Racks & Carts Dilution Dose Supply Exposure Systems sQCM mounted in VITROCELL® Cloud Alpha 12 module (left) and the new designed oscillator (right). sQCM – online measurement of particle dose in ng/cm2 sQCM oscillator connects the sensor and laptop/PC via USB-C. 163
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