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