An interlaboratory comparison deals in testing the same samples by different laboratories and in comparing the results.

Three different objectives can be pursued:

1 validate a test method and determine the uncertainty of results,

2 determine the characteristics of a product intended to be used as a reference material,

3 assess the reliability of the test results of the participating laboratories.


5 good reasons to participate in ILC test :

An error on a test result can have serious consequences and can be very expensive

very effective method of assessing a laboratory's competence


Its required for accreditation

You and your customers need complete trust in the reliability of your test results

The cost of participating in a proficiency test is very low compared to the trust it provides and the costs generated by unreliable tests

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