The purpose of this test is to determine the suitability of components, materials or any other articles intended to be used and stored in conditions of high relative humidity combined with cyclical temperature variations.
NBN C 06-230-1977 history
1973NBN C 06-230-1977 Basic climate test and mechanical robustness test. Part 2: Test, Test Db: Humid heat periodic test (cycle: 12+12 hours)