Hitachi CHROMASTER 5160 Instruction Manual page 271

1.2 Low-Pressure Gradient System
Injection valve
Syringe valve
This is a system for mixing plural solvents in the low pressure
section and delivering the mixture with a single pump.
Sample constituents are separated by changing the composition
of mobile phase with time.
Degassing
unit
Fig. 1-2 Low-Pressure Gradient System
1) Mobile-phase liquid is sucked into the low-pressure gradient
unit from the degassing unit.
2) In the low-pressure gradient unit, plural eluents are mixed
at the set mixing ratio.
3) A sample is injected with the autosampler.
1 - 3
Detergent
Mobile phase
Chromaster
organizer
Chromaster 5410/
5420/5430 detector
Chromaster 5310
column oven
Chromaster 5210
autosampler
Wash pump
Low-pressure
gradient unit/
proportioning valve
Chromaster 5110
pump
Drain
1.2