A method of using a vacuum chamber to assist in detecting moisture on aninstrument,removing moisture from the instrument, and confirming dryness of theinstrument is disclosed.The method may include the steps of opening a vacuum chamber； placing aninstrument into thechamber, closing the chamber, withdrawing a first volume of air from thechamber； changing avolume of liquid water into vapor, introducing a second volume of air into thechamber,withdrawing the second volume of air from the chamber, changing a secondvolume of liquidwater into vapor, introducing a third volume of air into the chamber, openingthe chamber, andremoving the instrument from the chamber in a dry state. This method may alsoinclude the stepsof collecting pressure data corresponding to the pressure within the chamberwhile withdrawingthe second volume of air from the chamber, calculating a first second-derivative value ofpressure with respect to time corresponding to a pressure greater thanapproximately the triple-pointpressure of water, calculating a second second-derivative value of pressurewith respect totime corresponding to a pressure greater than approximately the triple-pointpressure of waterand a time subsequent to the time corresponding to the first second-derivativevalue, calculatinga third second-derivative value of pressure with respect to time correspondingto a pressure lessthan approximately the triple-point pressure of water and a time subsequent tothe timecorresponding to the second second-derivative value, calculating a fourthsecond-derivativevalue of pressure with respect to time corresponding to a pressure less thanapproximately thetriple-point pressure of water and a time subsequent to the time correspondingto the thirdsecond-derivative value, determining that the fourth second-derivative valueis less than or equalto the third second-derivative value, determining that the second second-derivative v
