hplc column chiller heater and variable speed rotating mixer model ... will easily hold 4-30 cm x 1 columns and a rheodyne valve chamber temperature ... design is unique in that it opens out and down from the top all columns valves ... and fittings are mounted on the door ... exposing everything to simple and easy unobstructed access it has drains ... in the door for the valve and in the chamber floor for spills the ... for showing the chamber temperature and the count down timer the unit has a ... count down timer with audible alarm and user settable auto-off that will shut ... the co30 also has a power failure reset system that will reset the unit to the ... of o rings for mounting columns fused and switched ac input module 3-wire line ... cord for the country of use and 12 month warranty the unit measures 25. ...