Calibration of medical devices needs to be carried out periodically, at least once a year, which includes function tests (testing the parts of the medical device to find out whether the whole medical device can be operated properly according to its function), safety tests (ensuring that there are no dangers posed as a result of the use of medical devices), and performance testing (finding out how well the medical device performs so that it can be used in accordance with specification requirements). PT. Eksgon Brother is registered in the Ministry of Health's ASPAK with No. IP3172003.