Thermo Scientific Dionex Aquion RFIC Operator's Manual page 26

2
Description
Operating Features
Pump Heads
Injection Valve
Auxiliary Valve (Optional)
DS6 Heated Conductivity Cell
Suppressor
Separator and Guard Columns
10 Dionex Aquion RFIC Operator's Manual
The Dionex Aquion RFIC includes a dual-piston serial pump. The flow rate can be set to
0.00 mL/min or to between 0.05 and 5.00 mL/min. For optimum performance, set the flow
rate to between 0.40 and 2.00 mL/min. Setting the flow rate to 0.00 mL/min turns off the
pump. For more information, see
The injection valve is a 6-port, electrically-activated Rheodyne™ valve. A 25-μL sample loop
(P/N 042857) is installed on the valve at the factory. For more information, see
Valve" on page 25.
The auxiliary valve is a 2-position, electrically-activated Rheodyne valve. The valve is available
in 6-port and 10-port models. For more information, see
page 26.
The flow-through conductivity cell measures the electrical conductance of analyte ions as they
pass through the cell. A heat exchanger inside the cell regulates the temperature, which can be
set to between 30 and 55 °C. For optimum performance, set the temperature to at least 7 °C
above the ambient temperature and 5 °C above the column oven temperature. For more
information, see "DS6 Heated Conductivity Cell"
The suppressor reduces the eluent conductivity and enhances the conductivity of the sample
ions, thereby increasing detection sensitivity. The following suppressors can be used with the
Dionex Aquion RFIC:
• Thermo Scientific™ Dionex™ DRS™ Dynamically Regenerated Suppressor
• Thermo Scientific™ Dionex™ ERS™ 500 Electrolytically Regenerated Suppressor
For more information, see
Both the separator and guard columns are packed with resin and perform the separation of the
sample ions. The main function of the guard column is to trap contaminants and remove
particulates that might damage the separator column.
"Pump" on page 21.
on
"Suppressor" on page 28.
"Auxiliary Valve (Optional)"
page 10.
"Injection
on
Thermo Scientific