Non-standard methods of ISO 17025
Non-standard methods of ISO 17025
Clause 5.4.4
When it is necessary to use methods not covered by standard methods, these shall be subject to agreement with the customer and shall include a clear specification of the customer’s requirements and the purpose of the test and/or calibration. The method developed shall have been validated appropriately before use.
NOTE For new test and/or calibration methods, procedures should be developed prior to the tests and/or calibrations being performed and should contain at least the following information:
a) appropriate identification;
b) scope;
c) description of the type of item to be tested or calibrated;
d) parameters or quantities and ranges to be determined;
e) apparatus and equipment, including technical performance requirements;
f) reference standards and reference materials required;
g) environmental conditions required and any stabilization period needed;
h) description of the procedure, including
• affixing of identification marks, handling, transporting, storing and preparation of items,
• checks to be made before the work is started,
• checks that the equipment is working properly and, where required, calibration and adjustment of the equipment before each use,
• the method of recording the observations and results,
• any safety measures to be observed;
i) criteria and/or requirements for approval/rejection;
j) data to be recorded and method of analysis and presentation;
k) the uncertainty or the procedure for estimating uncertainty.
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on Tuesday, November 24th, 2009 at 1:35 pm and is filed under ISO 17025 standard.
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