I have a question regarding changing the calibration frequency of my field test instrument.
In the process of obtaining ISO 17025 I came to realise the external supplier I used to calibrate our field test instruments were not accurate enough which in turn was making my uncertainty of measurement for temperature calibration too high.
Due to this I have used another external supplier to carry out the field test instrument calibrations and the results have come back much better. Due to this finding I need to build up a calibration history quickly to help with my measurement uncertainty calculations, so instead of having my calibrators calibrated every 3 months I now have changed it to monthly, and will continue to do this for the next 4 months after which time I will change the calibration frequency back to 3 monthly.
How best do I document these findings and changes using your 17025 toolkit paperwork to show the auditors what I have done. Your help would be appreciated.