As it relates to 17025, in the dot3 there are ~17 additional requirements if one were to obtain accreditation.
ISO 17025 is a bench level document. It largely pertains to the here-and-now calibration, as well as the quality/records management system.
The dot3 is an organizational document that goes beyond the immediate calibration. Risk analysis (<2% PFA), end of period reliability, scientific analysis to set the recall interval, and more are addressed in the dot3 but not very well in 17025. It does also address end-users.
A 17025 calibration with data is acceptable,
however, additional work is required. For instance, a dot3 lab outsources work to a 17025 lab. On return, the calibration must include found/left measurements so the lab can perform the risk and reliability calculations to make the calibration dot3 compliant.
For anyone wanting to have dot3 digested for them, I strongly recommend they bite the bullet and get the
Handbook for the Application of . . . Z540.3.
It was written mostly by the same committee that wrote the standard. It is non-binding interpretive guidance that helps explain the rationale for the elements in the standard.
Doesn't make it any more agreeable, but . . . .
