| 摘要 |
<p num="1"><br/><br/><br/>According to the invention, the integrity of a product in a container (10) may <br/>be determined by the determination of a given feature of the product by means <br/>of a first measuring method (20), whereby a first physical property of the <br/>product is investigated. The given feature is additionally determined directly <br/>or by a second measuring method (30), base on a second physical property, <br/>different from the first physical property and the values for the given <br/>feature obtained by both methods are compared. Where the product is a drink in <br/>a bottle (10) and the given feature is the filling level, the first measuring <br/>method (20) can be measurement of the filling level by means of absorption of <br/>an X-ray beam and the second measuring method (30) is measurement of the <br/>change in the resonant frequency of a high frequency tuned circuit brought <br/>about by the bottle.<br/>
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