This is very helpful. See: http://www.nyteknik.se/incoming/article3267991.ece/BINARY/Temperature+data+Sept+7+%28xls%29
The data is taken at 2 second intervals. The thing cools down slowly after the pump is turned off at 23:10. assuming the reaction is fully quenched at that time you can estimate how good the insulation is. - Jed
