Heat or chill HPLC columns with this unit
The EchoTherm Model CO50 (photo) is a programmable chiller/heater for high-performance liquid chromatography (HPLC) columns. The unit has a temperature range from 4.0 to 100.0°C (readable and settable to 0.1°C). The PID control software regulates temperatures to±0.2°C, even at ambient conditions. The CO50 has an LED indicator that illuminates when the target temperature is stable to within±0.2°C. The Peltier-based CO50 has five-program memory of 10 steps per program and the ability to repeat any program from 1 to 99 times automatically. It is suitable for chiral and biomedical chromatography where below ambient temperatures help preserve bioactivity. It can be used for stabilizing column temperatures from day to day at or near room temperatures for repeatable results. The CO50 holds columns up to 30-cm long with 1/4- or 3/8-in. diameter mounting clips provided. Larger-diameter columns can be used by removing the column clips. — Torrey Pines Scientific, Inc., Carlsbad, Calif.