Two specific items to remember for MIC (Japan certification) Calibration of test equipment: It must be checked that the calibration of test equipment used during the testing is calibrated with an interval of 1 year maximum. There must be either a calibrated date + calibration due date noted in the test report or there must be a clear note, when only due dates are noted, that the calibration interval is 1 year max. Environmental conditions during testing: In any case, test reports used for Japan certification need to note the environmental conditions during testing such as ambient temperature and relative humidity.