jr. brockey, if i can recall from organic chemistry, we used ice and salt (rock salt) to acheive colllldddd temps. (same concept as when you make home ice cream with the ice and rock salt on the outside of the container). was this what you were asking about? also, how about dry ice/liquid nitrogen?
also, pharmacists use pga/everclear for compounding (mixing) drugs/pharmaceuticals. hopefully, you have little experience with pga/everclear!!! you will have to ask your dad to purchase it and monitor it. i remember when i finished high school, i worked in a pharmacy... i noticed a bottle of everclear alcohol under the pharmacists work station. i didn't have much experience/knowledge of alcohol other than folks drank it and could get drunk!! well, one day i noticed the bottle, then the next day there was a little bit gone, the next week some more gone, and the end of the month, the bottle was almost gone!!! well, the pharmacist was a friend i've known since i was young...so i innocently asked him with concern..."do you have a drinking problem at work, because i notice the everclear bottle underneath your work station seems to be almost gone...can i be of any help, do you need help??"" !!!! he laughed, and said i was nice kid for being concerned...but he then informed me and showed me how it was use to compound medications!!! anyway, funny story i think.
keep us posted, mark