User`s guide

1-1
Introduction 1
Gilson’s 305 Master pump conform to the standard specified in the ‘Declaration of
Conformity’ certificate (reference LT801354) supplied with the instrument.
The 305 Master pump is designed as a system controller. It can operate as a stand-alone
isocratic pump or as a system controller, to deliver fluids (liquids or liquefied gas when
specially equipped). As a system controller, the 305 Master pump controls a complete
pumping system, elution pumps and injection pump.
The 305 Master pump can operate in three different modes. These modes are:
Flow: The 305 pump provides a constant flow rate. The pump starts when the Run
key is pressed and stops when the Stop key is pressed. The flow mode is for
isocratic use only.
Dispense: The 305 dispenses a specified volume. The pump starts when the Start key is
pressed and stops when the specified volume has been dispensed. The
dispense mode is for isocratic use only.
Program: The 305 controls a multi-pump system with up to 2 slave elution pumps and
1 slave injection pump. In this mode, the 305 Master pump can create
gradients of flow rate and composition, open and close outputs to control
other instruments and wait for signals from other instruments.
The operation of each mode is explained in Chapter 4.
The present software version is 3.01.