Refers to a temperature cycling test that is carried out with two liquid baths (hot and cold). Oils are often used for the baths. A movable basket with the samples moves back and forth between the hot and cold baths. Rapid temperature loads of -65°C…200°C can be realized. This test is usually used for a quick pre-test of an electronic assembly in order to be able to make a preliminary design selection or to detect design faults at an early stage. The test is standardized according to IEC 60068.