Here's a link to a thorough article: http://crimemagazine.com/borden.htm This is covered under the trial heading. The article also has a link to the transcript for the trial.
I have found a few sites that revole only around the testing that was done on the Prussic acid during the Borden investigation. I think these may be useful in helping you to accomplish your goal.
The first is the testimony of Edward S Wood a physician and chemist that was a professor at Harvard Law school.
Testimony of Edward S. Wood in the Lizzie Borden Trial
The next is a Forensic Toxicology report that gives mention to the Borden case as well as some interesting facts on Prussic acid.
Forensic Toxicology - Forensic Science - Care2.com
I hope this helps. Have a great Day!