1. After the test of the constant temperature and humidity test chamber, the test sample should be restored for 1-2 hours. The relevant standard stipulates that the recovery process is controlled by the standard atmospheric pressure used by the lion test.
2. If it is required to recover under controlled recovery conditions, the test sample can be moved to another test equipment, and the time for transferring the sample should be as short as possible, and should not exceed 10 minutes according to relevant standards. It is also possible to leave the test sample in the constant temperature and humidity test chamber for recovery. The relative humidity inside the device should be reduced to 75% within 0.5h, and then the temperature should be lowered to the laboratory temperature within 0,5h. ±2 ° C;
3. The recovery time of the sample shall be counted from the time when the specified recovery conditions are reached;
4. For test samples with large thermal time constants, the recovery time should be long enough for the test sample to reach temperature stability.
5. The standard for constant temperature and humidity test chambers shall specify whether special measures should be taken to remove moisture from the surface of the test sample.
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