This is a low pressure binary gradient forming system. It uses the CE 4102 dual piston pump with flow rates from 0.001 to 10mL/min and a maximum operating pressure of 40MPa. The pump has the facility for mixing two solvents for binary gradients and of course may be used in the isocratic mode. The Adept CE 4200 dual wavelength detector is used with an 8µL x 10mm flowcell. The Rheodyne valve fitted with a 20µL loop is mounted with the column on the mounting panel CE 4050. The PowerStream software controller is mounted at the centre of the stack. Full control and data processing are provided for use with Windows. A Solvent Reservoir and Pipe Organiser and installation kit are also supplied.