ultrasonic cleaner

[fmerg]

what is the best liquid to use on old flat buttons in a low power ultrasonic cleaner was thinking of trying some peroxid

 

[wizzo86]

i use simple gren in mine for scuba part cleaning. I would think it would work...

 

[boogeyman]

Depends on what I'm cleaning. My most used are

Citric acid - Great for highly rusted items. Also great for restoring antique tools.
Pro Pride cleaner degreaser - Works excellent for painted or varnished items - car or machinery parts.
peroxide - for coins
ultra sonic cleaner powder from Harbor Freight - Jewlery & some silver coins.

Heavily rusted items go in the electrolysis bath. (either 2 gal. bucket or 1/2 a 20 gal drum) with citric acid & salt to taste