A solid-state field-effect transistor device for detecting chemical and biological species and for detecting changes in radiation is disclosed. A variable power signal can be applied to an induction coil from an inverter. The seal includes first and second sealing discs operable to seal against the first and second flanges of the inner case. Through IM, the CDW tests the product wafer under any set of test conditions. This comparison is used to determine which subsets of the excess information are presented and which are discarded. Consequently, simultaneously with the movement of the sheet by the ejector, a lower surface of a leading end of the sheet is pushed to relax and reduce a contact force between the lower surface of the leading end of the sheet and the stacking tray.