Calibration certificate

Do require external calibration laboratories to provide calibration certificates and results. 

For Class A flasks the tolerances are approximately halved such flasks may be purchased with a works calibration certificate, or with a British Standard Test (BST) Certificate. 

Type B obtained by means other than statistical analysis of results (e.g. data from calibration certificates, manufacturers specifications, modelling, etc.). 

Labelling and Calibration Check calibration certificate, indicate equipment identification details ... 

The results shall be reported in a test report or a calibration certificate, and shall include all the information requested by the customer and necessary for the interpretation of the test or calibration results and all information required by the method used. 

In chapter 5.10.2 of ISO/IEC 17025 the form of the test reports and calibration certificates are specified in detail. The first points (title, name of laboratory and client, serial number, method) are necessary to guarantee unique identification. 

Each test report or calibration certificate shall include at least the following Information, unless the laboratory has valid reasons for not doing so ... 

The following slides contain the details of the information that usually have to be included in the test or calibration certificate. These include the date of the measurement, the result, the staff responsible for carrying out the work and where relevant a statement that the results apply to the items tested or calibrated. 

A statement specifying that the test report or calibration certificate shall not be reproduced except in full, without written approval of the laboratory should be included in the document (e.g. as a footnote). 

Hard copies of test reports and calibration certificates should also include the page number and total number of pages. 

In addition to the requirements listed in clause 5.10.2 of ISO/IEC 17025, calibration certificates shall include conditions under which the cahbration was carried out, the uncertainty on the result and information about the measurement traceability, which is necessary for the interpretation of calibration results. 

Attention should be given to the layout of the test report or calibration certificate, especially with regard to the presentation of the test or calibration data and ease of assimilation by the... 

If there are amendments to test reports or calibration certificates after issue, they shall be made only in the form of a further document. It must contain a statement to which document the amendment belongs. 

If there are too many corrections it is sometimes necessary to write a completely new test report or calibration certificate. 

Reporting the Results (Ch. 5.10) Amendments to Test Reports and Calibration Certificates (5.m9)... 

Sipplementto Test Report [or Calibration Certificate], serial number... [or as otherwise identified] ,. .. 

The laboratory) shall retain on record all original observations, calculations and derived data, calibration records and a copy of the calibration certificate, and test certificate or test report for an appropriate period. The records for each calibration and test shall contain sufficient information to permit their repetition."... 

Calibration refers to comparison with a standard in accordance with certain statutory regulations by specially authorized personnel (calibration facility). The result of this procedure is a calibration certificate which contains the deviations of the readings of the instrument being calibrated from the standard. 

Calibrating a leak detector is to be understood as matching the display at a leak detector unit, to which a test leak is attached, with the value shown on the label or calibration certificate. The prerequisite for this is correct adjustment of the ion paths in the spectrometer, also known as tuning. Cften the distinction is not made quite so carefully and both procedures together are referred to as calibration. 

Alanine dosimeters are based on the ability of 1-a alanine (a crystalline amino acid) to form a very stable free radical when subjected to ionizing radiation. The alanine free radical yields an electron paramagnetic resonance (EPR) signal that is dose dependent, yet independent of the dose rate, energy type, and relatively insensitive to temperature and humidity. Alanine dosimeters are available in the form of pellets or films and can be used for doses ranging from 10 Gy to 200 kGy. A reference calibration service using the alanine EPR system was developed and the scans were sent to the service center by mail. Currently the available system allows transferring the EPR scan to a NIST server for a calibration certificate. This way the procedure has been shortened from days to hours. ... 

Purchase and control measuring equipment and reference material necessary for internal calibration certification of calibrated instruments. Label them with the date when last calibrated and also date when the next calibration is due. Write a calibration report and, if necessary, an incident report or a calibration variance report. 

The uncertainties of all equipment used in the calibration procedure and the method of combining them should be shown on the calibration certificate. 

Does the system include the retention of calibration certificates or data used in support of all calibration of measuring equipment Does the record system allow for calling forward, at the appropriate interval, equipment requiring calibration ... 

Document metrological traceability. This requires identification of all CRMs used as calibrators, calibration certificates for equipment, and a statement of the measurement uncertainty of the measurement result. The metrological traceability chain is thus established. 

There is no standard report form offered because the standard requires it be completed and in accordance with any specific instructions in the test or calibration methods (subsection 5.10.1). It is noteworthy that the general notes to subsection 5.10 do allow a simplified report to be issued to internal clients, as long as the full information is readily available in the laboratory. There are 11 items that are required on test reports and calibration certificates (unless there are valid reasons for their exclusion) plus five additional items that cover aspects of interpretation and six items when sampling has also been carried out as part of the test. Increasingly test reports are submitted electronically. This is referred to in the standard (subsection 5.10.7) and is allowed as long as the requirements of the standard are met. Of importance is the integrity of the report and the nature of the signature when the report is sent by e-mail or via the Internet. 

The pharmaceutical manufacturer is not normally represented at supplier factory calibrations but for critical items should consider an option to inspect instrumentation and witness tests. Calibration certificates referencing the test procedure and test equipment should be sought, particularly for the instruments and regulating devices directly associated with quality-related critical parameter measurements and control. 

The procedure would typically include an inspection checklist, calibration procedure, test equipment stipulations, and documentation requirements (e.g., inspection certificates, calibration certificates, hazardous area certification, EMC/RFI certification, material certificates). 

A company sent a set of gage blocks to NBS at regular intervals to be calibrated. NBS dutifully calibrated the blocks and provided a calibration certificate and data report. The company kept their current NBS calibration certificate on file to prove to their auditors that they were traceable to NBS for dimensional measurements. The problem was that each time the blocks returned to NBS, our people found the seal unbroken. The gage blocks had never been used, yet the company satisfied the auditors that they were traceable to NBS as required. 

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