On Wednesday 01 June 2005 05:24 am, Russell McMahon scribbled: > Temperature of a cooling fluid in a well insulated container will be > far more predictable. You can even add enough heat and or remove > enough insulation so that the temperature falls only very slowly. What are you referring to as a "cooling fluid"? I was trying to very slowly reduce or increase heat of the oil in my existing experiments, but many many hours later, I still got noticeably inconsistent results. I was even thinking of doing this both with increasing and then decreasing temps and averaging, but still not comfortable with this. Cheers, -Neil. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist