The EchoTherm high-performance liquid chromatography column oven model CO20, from Torrey Pines Scientific Inc, Carlsbad, Calif, offers a temperature range from room temperature to 90.0°C, readable and settable in increments of 0.1°C. The proportional–integral–derivative temperature control software regulates temperature accuracy and stability to within ±0.1ºC. A stable temperature indicator lamp on the front panel illuminates when the chamber temperature is stable at ±0.2ºC of the target temperature. Using provided mounting clips, the unit holds ¼” or ?” diameter columns up to 30 cm long, with room remaining for guard columns and fittings. Larger diameter columns may be used by removing the mounting clips that hold the smaller columns. The device features simple controls, digital display of target and actual chamber temperatures, an injection counter, and a 30-day timer with alarm and user-settable auto-off. An accessory stand is available. For more information, visit Torrey Pines Scientific.