Josh,
After some research, i also came to the same conclusions, as Linda and I do not think that Kirlian Photos are the best way to “evaluate” the plasterite. Many sources mention, that Kirlian is not the same as the aura photography… Sounds more like a conductivity testing to me… 
I would say, that one of the best ways to “evaluate” the plasterite – is to make or receive one and see it for yourself 
While on the subject, tomorrow sounds like a very excellent day to do another pour 
Namaste,
Anna