I use my SpyderCHECKR / SpyderCHECKR 24 daily and several patches are developing a sheen in the center, which I suspect is from handling. What do I do about this?
The 48-patch SpyderCHECKR also includes a Fade Checker to inform you of any fading of the color patches from exposure to light.
The lower cost SpyderCHECKR 24 is designed to be replaced as-needed.
In this case, replacement with a new SpyderCHECKR 24 or the 48-patch SpyderCHECKR replacement cards is advised to retain maximum accuracy.