We started to use an ultrsonic cleaner to clean pen tips. Then I used an
ultrsonic cleaner for non ferrous metal artifacts. (I was warned not to
use it for iron as it could shake corroded wrought iron apart.) I found
it useful to remove any left over material on copper alloys after ue had
chemically removed corrosion products. I think ceramics absorb the sound
waves and thus dampen the effect. I know of labs that used ultra sound to
clean stone tools in attempts to locate blood residue. However as
my machine wore out it made the same amount of noise but did progressively
less work.
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| Keith R Doms University of Delaware |
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