For better separation in preparative Liquid ChromatographyEach parameter in the analytical LC is set and monitoredvery precisely. The temperature of the column is anessential factor for a good separation and is adjusteddepending on the problem and analytes. In the preparativefield, temperature control for columns has been thought of,but columns are only heated externally. For low flow ratesin the analytical field this might be sufficient, but forpreparative separations and high flow rates a lot ofefficiency is lost when the mobile phase is not heated.Lower mobile phase viscosityFaster interaction with stationary phaseLower system back pressureHigher flowrates without loosing resolutionShorter cycle timesEqualize the enthalpy of mixing solventsColumnsUp to 8 columns (8 x 30 x250 mm or 2 x 50 x250 mm)ControlIntegrated Keyboard control, PC direct controlColumn selection Valve8 Pos. Max Pressure: 5000 psiOutputsError signal contact closureFlowrate200 ml/minInputsBCD-/Impulse Signal for Column positionMax. Pressure400 bar1/16" SSTubing Heat ExchangerDimensions (WxHxD)35 x61 x28 cmTemperature Range5 - 55 °C (in 0.5 °C increments)Weight27 kgAccuracy0.1 °CEnviromental Conditions5 - 40 °C, 35 - 75% rHReproducibilityBetter than 0.5 °CPower Requirements115/230 VAC; 50/60 HzStabilityBetter than 0.5 °CMax. power Consumption1520 VASensorsSolvent Vapor alarm, Leakage alarm, Temperature warning