A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. These features are interconnected through a network 2. The sample filter contains a monolith adsorbent that specifically binds to nucleic acids. At the same time, by separately summing up for each main bitstream the calculated results of Euclidean distance between the reproduced signal and the target signal corresponding to the evaluation bitstream, the size of an evaluation summing circuit can be reduced. The energy content of the detected vibration spectrum can be analyzed for features characteristic of noise, for example a higher relative contribution from high frequencies due in part to preferential coupling of above coincidence frequencies over below coincidence frequencies.