Thermoelectrics Unlimited, Inc.
Model SK-12D
The Stir-Kool Model SK-12D is our most advanced production model to date.  Featuring a programmable digital meter, it can be used as a single setpoint controller for steady state use, or as a ramp and soak controller for time dependent processes such as recrystallization.  Settable in tenths or degrees, the unit will control to one tenth of a degree regardless of fluctuations in line voltage or ambient temberature. 
Stirring of solutions for thermal equilibrium is easily accomplished with standard magnetic bars.  
The SK-12D has minimal power requirements - less than 1 amp -  yet delivers 130 BTU of initial cooling power.  Water flow of about 1 liter per minute through the heat exchanger carries the waste heat away.
The SK-12D controls from ambient to -20C.  The SK-12D-AW offers similar performance but with an air heat exchanger.  
   Its compact size and versatility make the SK-12D a must for precision cooling in the laboratory. 
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