Make sure your calibration cap is clean. A dirty calibration cap can affect the results of the measurements, as your Colourpin will be calibrated incorrectly. In this case, try to use a clean microfiber cloth and gently remove the dust and stain on the lid. You can also purchase a new calibration cap in our Online Shop.
If you have access to official NCS samples, try to measure 5 random colours in each Hue of the Colour Circle to cover measurements of both light and dark colours. If this results in more than 5 mismatches, follow the reclaim process found in our Terms & Conditions.