I have been looking into ultrasonic scalers. These can do a marvellous
job of removing encrustations from shells, especially spiny ones. They
can also be used for some fossils.

The Chinese are making quite a few, and prices are WAY below US or
European-made units.

For instance, Yunsheng Medical Instrument Co Ltd's Model YS-CS-A for
special price of $156. Contact: Yuki Zhang <[log in to unmask]>
www.dentalyunsheng.com.

Nanjing Foinoe Equipment Co Ltd sells its Model-K for $140.00US, but
for that price the minimum number of sets is 5. Tips are $2.00 each,
minimum 10 (that's gotta be cheap!). Contact: Export Manager Bob Jiang
<[log in to unmask]> www.foinoe.com. I see this same machine sold in New
Zealand as Intop DDUSC 02 as well! I haven't bothered to find out the
price... probably 3x  the above for the same unit.

--
Regards
Andrew Grebneff
Dunedin, New Zealand
Fossil preparator
Mollusc, Toyota & VW van nut

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