A method and apparatus of determining the condition of a bulk tissue sample, by: positioning a bulk tissue sample between a pair of induction coils (or antennae)； passing a spectrum of alternating current (or voltage) through a first of the induction coils (or antennae)； measuring spectrum of alternating current (or voltage) produced in the second of the induction coils (or antennae)； and comparing the phase shift between the spectrum of alternating currents (or voltages) in the first and second induction coils (or antennae), thereby determining the condition of the bulk tissue sample.
