Integrity is to make a complete specification of the original records table, the table of test items to be exhaustive as possible, there is enough information to satisfy the test and calibration certificate issued demands. Fill in writing to correct the original records, clear easy identification, the page you want to keep clean. At the same error correction should be standardized, when mistakes occur in records, each - error should be crossed, non-erasable obliterated, so illegible or deleted, and the correct value entered alongside. All changes to the records of the changes should be signed or initialed by people to clear their duties.
      The accuracy of the measurement is the core of the work, not accuracy, verification, calibration work loses its meaning. In addition to establishing the accuracy depends on the accuracy of the measurement apparatus and functioning equipment, but also depend on the quality of different methods of paste and staff verification measure. There are questions of verification, calibration data to different measurement methods and measuring instruments to be validated to ensure the accuracy of test, calibration data. And for a member to be measured in terms of its accuracy should be based on different, take to maximize meet the measurement methods and measuring instrument measurement accuracy requirements.
    Test and calibration certificate produced is a measure of the staff of the "product", it is a concentrated expression of the quality of the measurement. Qualified test and calibration certificate formats should be standardized, content to be complete, clear, accurate, objective, and should contain all the information verification and calibration results. Such as test, measurement calibration standard appliance name used; Measurement Standard certificate number; Equipment name, model; on the basis of technical file number, name; verification and calibration of environmental conditions (such as temperature, humidity, etc.); Verification audit, signature of person in charge; certificate is valid; the uncertainty of measurement results and show traceability and so on.
Measurement Uncertainty refers to the measurement results can not be sure of the extent, to indicate the degree of trustworthiness of the measurement results. Due to lack of understanding of the limitations, the ability of any measurement can not be absolutely accurate, we are bound to have errors. Uncertainty is the establishment of a new concept based on the theory of error, used to indicate the quality of the measurement equipment. Uncertainty, the higher the quality of the measurement results; conversely, the lower the quality of the measurement results, its value is also lower. Therefore, when measuring and using the measurement results, we must consider the measurement uncertainty. Strictly speaking, I do not know the uncertainty of the measurement results can not be compared with each other, do not have use value, it is meaningless.
Test and calibration certificate should be able to provide information dating back to the national measurement benchmarks and in line with the measurement specifications described. Where there is no traceable to national measurement reference, the laboratory shall provide evidence satisfactory results, such as participation in a suitable interlaboratory comparison or proficiency testing.