Criminal Sentence 486: That's Un-exceptable

From something I edited recently:

"The use of CO2 to clean graphite has been an excepted practice for over twenty years."

I take exception to that!

These two words sound alike but mean different things:

"accepted": related to "accept," meaning to receive with approval--We have accepted you into our club.
"excepted": related to "except," meaning anything but that--We like all of you, present company excepted.