You should start by reading old threads. Try Googleing "gardenweb granite test" or something similar. The google search turns up a lot more results than the search option on gardenweb, for some reason. The "ones who know" around here seem more apt to answer a question when the poster has read some history, and has at least a new twist for them to answer. (And this question has been answered many, many times.)

:-)

Thank you. I will try google. I appreciate you taking the time to respond.

current thread here with links to others, good luck!

http://ths.gardenweb.com/forums/load/kitchbath/msg011822418138.html

Here is a link that might be useful: rocks part 5