I have experience with ISO 9001 but new to ISO 17025. I am used to concept of nonconforming product in ISO 9001, but when it comes to nonconforming work I am a little confused. Does this section of the ISO 17025 calls for the control of nonconformamces in performing the test or calibration work, like if the work is done improperly? I get confused when I think of an item subject to test. If the test is done properly and the item does not pass the test, this is not a nonconformace as defined in this 4.9 section, right? Any help will be appreciated.