"Calibration" and "verification" is to ensure the accuracy of the value of two different ways and means. Calibration and verification from the traceability, they are the same, but from the legal effect, they are different. GJB9001A-2001 standard 7.6 clause a) requirements: traceability to the international or national standards of measurement standards, if necessary, measuring equipment should be in accordance with the specified time interval or before use for calibration or verification. The word "or" in the standard establishes a parallel and optional relationship between calibration and verification. Under the premise of meeting the laws and regulations, enterprises and institutions can choose their own methods of verification or calibration for different situations. Calibration is a voluntary traceability behavior of enterprises and institutions, not mandatory, enterprises and institutions can carry out calibration on their own, can also be appointed? No, it is generally a technical document without legal effect. The calibration belongs to the national mandatory law enforcement behavior, the results of the calibration must be sent to the measurement of measuring instruments, instruments and equipment to make a qualified or unqualified judgment, when the results are qualified, it will be issued a certificate of calibration, unqualified will be issued to the unqualified notification, the results of the calibration has the force of law. Measuring instruments belonging to the mandatory verification must meet two conditions: First, the instrument is included in the national mandatory verification of the work of measuring instruments directory; Secondly, the measuring instruments must be used for trade settlement, safety and security, medical and health care, environmental testing for specific purposes. For trade settlement, safety and security, medical and health, environmental testing purposes other than measuring instruments, such as scientific research, production, business management with measuring instruments, generally in accordance with the non-compulsory verification of measuring instruments for management and control.
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Calibration certificates in line with ISO, UL, 3C, CQC, CE and customer factory audit requirements.