The qualification standards for high and low temperature test chambers mainly include the following aspects:

Temperature range: It should meet the requirements of the tested product. The common temperature range is -70 ℃ to+150 ℃, but the specific range can be adjusted as needed.

Temperature fluctuation: In a stable state, the temperature fluctuation inside the test chamber should be less than ± 0.5 ℃ to ensure the accuracy of the test results.

Temperature uniformity: The temperature difference between each point inside the test chamber should be less than ± 2 ℃ to ensure consistency in the testing environment.

Heating/cooling rate: should meet the requirements of the tested product, usually not exceeding 20 minutes from room temperature to the set temperature or to room temperature.

These standards ensure that high and low temperature test chambers can provide accurate and stable testing environments to meet the testing needs of different industries and products