Will this work for repairing a chip in a ceramic plate? I’m concerned about it being water proof and food safe.

This product is NSF listed - safe for use on potable water lines & will work with ceramic. It is not food grade rated so would not recommend it coming in contact with food. For use in wet or damp areas, work the material forcefully into the area and apply pressure until adhesion occurs. Full cure will occur in 24 hours.