Is Measurement Uncertainty required for a captive lab according to ISO 17025

B

beeman2236

#1
I am being audited by NADCAP (17025) and we have never performed measurement uncertainty because we test to a know method. We have been certified for years. They are telling me that we missed that requirement. This is specifically dealing with calipers and Micrometers.

Do you guys have any input on that? Do you know if that is a requirement?
 
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Hershal

Metrologist-Auditor
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Super Moderator
#2
I am being audited by NADCAP (17025) and we have never performed measurement uncertainty because we test to a know method. We have been certified for years. They are telling me that we missed that requirement. This is specifically dealing with calipers and Micrometers.

Do you guys have any input on that? Do you know if that is a requirement?
If you are referring to internal calibration, yes it is a requirement under Clause 5.4.6.1 and also under the internationally accepted definitions for traceability of your calibrations.

If for testing (not calibration of the instruments) then Clauses 5.4.6.2 and 5.4.6.3 may give you some leeway, but NADCAP or your accrediting body will have some say there as well.

Hope this helps.
 
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