There are many classes of defects we look for but the following is a summary of some of the more common items we get asked to look for.
Unfortunately due to non-disclosure agreements we are unable to share information but would be more than happy to discuss your own needs

Although we are not limited to the type of defects we look for, here are a few common ones we commonly get asked to find, classify and categorize.

Debris, Foreign Material, Scratches

Probe Mark location and size

Chipping, damage, incursion

Mems structures, breakages, missing features