[volt-nuts] Calibration and Certification - Trust and detail

[Robert Atkinson]

On a related issue to the 3457A calibration, I was asked to review an item at work last week (sorry can't say what or why). Looking at compliance certification by two fully qualified, internationally recognised labs, all looked well until I looked at the detail. Things like "..all RELEVANT requirements of.." (my capitals) with no list of what was relevant or any test report., details of only one test when the standard needed a number under different conditions, no record of the part or serial numbers of the unit tested. Others had accepted the "certification" at face value.  Unfortunatly if the test house "customer" says "just do this bit" and the test house is happy to put weasely words on the certifcate, then user beware. 

Robert G8RPI.