ISO 17025 accredited lab and would like to know if there is any type of annual calibration that would be needed to maintain this equipment.?
The calibrated specimen supplied with the sensor is the White Instrumetn Tile. This was supplied with Certificate of Traceability showing both the calibrated values and the uncertainty of the calibration ( for all expect LSXE and CQXE ). An expiration date is not shown on this certificate, individual users typically choose a timeframe of between 12 and 60 months to have this tile recalibrated.
Color Measurement is a unique field in metrology since there are no intrinsic standards of color expect for White. To compensate for the lack of intrinsic color standards the industry has standardized on using Lucideon CCSII tiles as consensus standards of color. Since color measurement is device dependent HunterLab has created targets based on the mean of group of known good sensors and uses these values to validate the color measurement performance of an instrument that was standardized using a calibrated Instrument Standard White. If the instrument can read back these CCSII tiles to within the stated uncertainty for the tile and tile set then it is implied that the instrument falls within the population mean of the instrument family.
Your sensor was shipped with a copy of its factory verification. We recommend that you have this type of verification performed at not more than 15 month intervals.