Low-Pressure Gradient System - Hitachi CHROMASTER 5160 Instruction Manual

1.2.2 Low-Pressure Gradient System

Injection valve
In the low-pressure gradient system, two or more solvents are
mixed in its low-pressure section from which a liquid feed is
performed by a single pump. The composition of an eluent is
made to vary with time in chromatographic separation.
Syringe valve
Degassing
unit
Fig. 1-2 Low-Pressure Gradient System
(1) Each of plural eluents is fed from the degassing unit to the
low-pressure unit.
(2) In the low-pressure unit, the eluents are mixed at a
pre-specified ratio.
(3) Through the mixer, the mixture eluent is delivered.
(4) A sample is injected by the autosampler.
Wash fluid
Mobile phase
Chromaster organizer
Column
Drain
1 - 5
Chromaster 5410/5420/
5430 detector
Chromaster 5310
column oven
Chromaster 5210
autosampler
Wash pump
Low pressure gradient unit/
proportioning valve
Chromaster 5110
pump
1.2.2