Patent ID: 8813566

Claim:
A method of analysing a test material comprising the steps of: inducing a resonant acoustic emission from a vessel containing a solvent and measuring said resonant acoustic emission, said vessel being made of a resonant material, wherein said inducing step is performed by a magnetically actuated stir bar, an entirety of said stir bar residing below a fluid line of said solvent, and said stir bar tapping an inner wall of said vessel to induce said resonant acoustic emission from said vessel; dissolving a known amount of the test material in the solvent; and measuring changes in resonance and absorbance frequencies of said resonant acoustic emission from said vessel before and after said dissolving step, a completion of said dissolving step being determined by a time point at which a resonant fundamental frequency curve of said resonance frequencies reaches approximately a minimum resonant frequency, said measuring step producing a broadband acoustic resonant dissolution emission profile, and said measuring step being performed by a microphone transducer removeably mounted on said vessel, said microphone transducer being positioned above said fluid line of said solvent.