Yep, worked with HV and UHV in a heavy ion accelerator lab for 6 years...believe me, with a dozen grad students around it was nothing close to clean room conditions. :-)
Anything that went *into* the experimenting chambers was cleaned with acetone and handled with gloves, of course.
A lab isn’t (usually) a manufacturing facility where specimens are transported around inbetween the different stages.
Acetone???? How did you get rid of the residue?