This Eppendorf CH-500 HPLC Column Heater / Controller System is in good condition, has been tested and is guaranteed to be fully functional. This item came from a local lab that had surplus inventory. We urge customers to view all photos as they show overall condition, included accessories, and functionality. Please feel free to contact us with any questions. The CH-500 heater/controller combines features of the CH-30 heater and the TC-50 controller in a single unit. It includes Eppendorf?s innovative reversible heating blocks and remote heater on/off capability. Use this unit to heat up to two 1/4" x 30cm and two 1/8" x 30cm columns, or one 3/8" OD x 30cm and one 1/2" OD x 30cm column. Alternatively, you can use the heating channels for 1/8" columns to heat solvent before it enters the injector. Temperature Range amb.-150C FOR ADDITIONAL INFORMATION PLEASE VISIT LINK BELOW: