I need a method to maintain the temperature of the water specifically at 55 degree and 5 degree into two different containers to conduct a thermal cycling. I am keen to address the effect of temperature change (Aging) on a specific material.
2 Answers
Sous vide cooking is probably what you're looking for. There several different methods available, from "rolling your own" with a microcontroller, thermocouple, and heating element (note: you should really only do this if you know what you're doing with electroncs, due to dealing with line voltages for the heater); to using cheap thermocontrollers with some slow cookers; to using immersion heaters/circulators in whatever vessels you choose.
I use a Picobrew Zymatic for that. www.picobrew.com