A weathering device (for carrying out artificial weathering or natural weathering) is provided with an ultrasound analysis device by means of which samples can be analyzed using ultrasound during the weathering process. The ultrasound analysis device comprises, for example, a measuring cell (10) inside of which an ultrasonic transducer (2) is located on one side, and a sample (3B) to be analyzed is located on the opposite side. The ultrasound analysis can ensue using ultrasonic waves reflected and/or transmitted by the sample (3B).
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