Patent ID: 8040132

Claim:
A method for identifying a sample in a container comprising: injecting a high frequency signal generated by a signal source to a resonator to excite at least one resonant mode of the resonator and measuring with a frequency measuring device a resonance frequency of the resonator without the container with the sample present in a high-frequency field of the resonator; disposing the container with the sample proximate to the resonator; injecting a high-frequency signal generated by the signal source into the resonator in order to excite a resonant mode of the resonator and determining with a measuring device a sample influenced resonance frequency of the resonator with the sample in the container penetrated by the high-frequency electromagnetic field of the resonant mode; measuring with the measuring device a resonance curve of at least one resonant mode; and determining a change in the sample influenced resonance frequency of the resonator in comparison with the measurement of the resonance frequency without the sample container in the high-frequency electromagnetic field and identifying the sample based on said change.