Designed to hold columns up to 30 cm long by ¼ or 3/8 in. diameter in mounting clips, EchoTherm™ Model CO50 features temperature range of 4.0–100.0°C, readable and settable to 0.1°C. Programmable chiller/heater uses PID control software to regulate temperature to ±0.2°C, and has Stable Temperature LED that illuminates when target temperature is stable to within ±0.2°C. Offering 5-program memory of 10 steps per program, Peltier-based CO50 can repeat any program from 1–99 times automatically.