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2 • Features
Doc. 065291-01 3/09 25
Flow Description for KOH, LiOH, MSA, or NaOH Eluent Generation
Refer to Figure 2-10 for the flow path number locations.
• Deionized water from the reservoirn flows first through the pump degas
assembly and then through the eluent valve
o to the pumpp. The water is
then pushed through the pressure transducer
q, which measures the system
pressure. From there, the water flows through a pulse damper
r, which
smooths minor pressure variations from the pump to minimize baseline noise.
• Water then flows into the EluGen cartridge (EGC)s, which generates the
programmed concentration of eluent. Eluent exits the cartridge and flows
through the CR-TC
t(which traps ionic contaminants), through the EGC
degas tubing assembly
u, and on to the injection valvev.
• After sample is loaded into the sample loopw and the injection valve is
toggled to the Inject position, eluent passes through the sample loop.
• The eluent/sample mixture is pumped through the heat exchanger , which
heats the mixture to the column heater temperature. The mixture then goes to
the guard and separator columns and through the suppressor .
• From the suppressor, the mixture flows through the cell , where the analytes
are detected. A digital signal is sent to Chromeleon software. Analog output
can be collected simultaneously.
• The mixture flows out of the cell and is recycled back into the suppressor ,
where it is the water source for the regenerant chamber.
• Regenerant waste from the suppressor is directed back to the CR-TC , and
then to the EGC degas tubing , where any released hydrogen or oxygen gas
is removed before it is sent to the gas separator assembly and then to waste .
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