Hello Steve:

You can get the method from Waterloo's home page.

Also at the Uni Bern they use something less toxic you can contact Silvio
Borella and ask at - [log in to unmask] (Silvio Borella)

Good luck,

Bill


William  Anderson
Geologisches Institut
ETH-Zentrum
CH-8092 Zuerich
Switzerland

phone:  41-1-632-3637   lab:  41-1-632-3707             fax:  41-1-632-1080