Chromeleon, ERS, and OnGuard are registered trademarks of Thermo Fisher Scientific Inc. in the United
States. Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and
other countries.
KIMWIPES is a registered trademark of Kimberly-Clark Corporation in the United States and possibly other
countries.
PEEK is a trademark of Victrex PLC. Rheodyne is a trademark of IDEX Health & Science LLC.
All other trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries.
Thermo Fisher Scientific Inc. provides this document to its customers with a product purchase to use in the
product operation. This document is copyright protected and any reproduction of the whole or any part of this
document is strictly prohibited, except with the written authorization of Thermo Fisher Scientific Inc.
The contents of this document are subject to change without notice. All technical information in this
document is for reference purposes only. System configurations and specifications in this document supersede
all previous information received by the purchaser.
This document is not part of any sales contract between Thermo Fisher Scientific Inc. and a purchaser. This
document shall in no way govern or modify any Terms and Conditions of Sale, which Terms and Conditions of
Sale shall govern all conflicting information between the two documents.
Release history: Revision 01 released March 2019; initial system release
Software version: Chromeleon 7.2.9 DUa and later
For Research Use Only. Not for use in diagnostic procedures.
This manual provides instructions for the operation of the Thermo Scientific™ Dionex™
Aquion™ RFIC™ Ion Chromatography System.
Contents
• Related Documentation
• Safety Information
• Regulatory Compliance
• Deionized Water Requirements for IC
• Contacting Us
Related Documentation
In addition to this manual, the following documents are available on the Thermo Fisher
Scientific website or from your local office:
• Dionex Aquion RFIC Ion Chromatography System Installation Instructions
(Document No. 22176-97005)
• Manuals for consumable products (including columns, suppressors, and eluent generator
cartridges)
• Chromeleon 7 Installation Guide (Document No. 7229.0003); also provided on the
Thermo Scientific™ Dionex™ Chromeleon™ 7 Chromatography Data System DVD
The Dionex Aquion RFIC is manufactured for Thermo Fisher Scientific at the following
location:
Jabil Circuit de Chihuahua S. de R.L. de C.V.
Complejo Industrial Chihuahua
Av. Alejandro Dumas No. 11341
31109 Chihuahua, Chihuahua
Mexico
The Dionex Aquion RFIC is designed for IC (ion chromatography) applications and should
not be used for any other purpose. Operation of a Dionex Aquion RFIC in a manner not
specified by Thermo Fisher Scientific may result in personal injury.
If there is a question regarding appropriate usage, contact Technical Support for Dionex
products. In the U.S. and Canada, call 1-800-532-4752. Outside the U.S. and Canada, call
the nearest Thermo Fisher Scientific office.
Safety and Special Notices
Make sure you follow the precautionary statements presented in this manual. Safety notices
and special notices appear in boxes. These notices include the following:
DANGER Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury. Each DANGER notice is accompanied by an appropriate
DANGER symbol.
CAUTION Highlights hazards to humans, property, or the environment. Each CAUTION
notice is accompanied by an appropriate CAUTION symbol.
IMPORTANT Highlights information necessary to prevent damage to the system or
software, loss of data, or invalid test results; or might contain information that is critical
for optimal performance of the system.
Note Highlights information of general interest.
Tip Highlights helpful information that can make a task easier.
These symbols appear on the Dionex Aquion RFIC or on labels affixed to the system:
Alternating current
Primary protective conductor terminal
Secondary protective conductor terminal
Power supply is on
Power supply is off
Indicates a potential hazard. Refer to this manual for an explanation of the
hazard and how to proceed.
Regulatory Compliance
Thermo Fisher Scientific performs complete testing and evaluation of its products to ensure
full compliance with applicable domestic and international regulations. When the system is
delivered to you, it meets all pertinent electromagnetic compatibility (EMC) and safety
standards as described in this section.
Changes that you make to your system may void compliance with one or more of these EMC
and safety standards. Changes to your system include replacing a part or adding components,
options, or peripherals not specifically authorized and qualified by Thermo Fisher Scientific.
To ensure continued compliance with EMC and safety standards, replacement parts and
additional components, options, and peripherals must be ordered from Thermo Fisher
Scientific or one of its authorized representatives.
The regulatory symbols on the Dionex Aquion RFIC model/data label indicate that the
system is in compliance with the following EMC and safety standards:
• EN 61010-1:2010
• UL 61010-1:2012
• CAN/CSA-C22.2 No. 61010-1-12
• EN 61326-1:2013
The CE mark on the Dionex Aquion RFIC model/data label indicates that the system is in
compliance with the following European Community Directives as is evidenced by
compliance to the associated standard where appropriate:
• Low Voltage/Safety Directive: 2014/35/EU by conforming to EN61010-1:2013
• EMC Directive: 2014/30/EU by conforming to EN61326-1:2013
Notice on Lifting and Handling of Thermo Scientific Instruments
For your safety, and in compliance with international regulations, the physical handling of
this Thermo Fisher Scientific instrument requires a team effort to lift and/or move the
instrument. This instrument is too heavy and/or bulky for one person alone to handle safely.
Notice on the Proper Use of Thermo Scientific Instruments
In compliance with international regulations: This instrument must be used in the manner
specified by Thermo Fisher Scientific to ensure protections provided by the instrument are
not impaired. Deviations from specified instructions on the proper use of the instrument
include changes to the system and parts replacement. Accordingly, order replacement parts
from Thermo Fisher Scientific or one of its authorized representatives.
Notice on the Susceptibility to Electromagnetic Transmission
WEEE Compliance
Your instrument is designed to work in a controlled electromagnetic environment. Do not use
radio frequency transmitters, such as mobile phones, in close proximity to the instrument.
For manufacturing location, see the label on the instrument.
This product complies with the European Union’s Waste Electrical & Electronic Equipment
(WEEE) Directive 2002/96/EC. It is marked with the following symbol:
Thermo Fisher Scientific is registered with B2B Compliance (B2Bcompliance.org.uk) in the
UK and with the European Recycling Platform (ERP-recycling.org) in all other countries of
the European Union and in Norway.
If this product is located in Europe and you want to participate in the Thermo Fisher
Scientific B2B (Business-to-Business) Recycling Program, send an email request to
weee.recycle@thermofisher.com with the following information:
• WEEE product class
• Name of the manufacturer or distributor (where you purchased the product)
• Number of product pieces, and the estimated total weight and volume
• Pick-up address and contact person (including contact information)
• Appropriate pick-up time
• Declaration of decontamination, stating that all hazardous fluids or material have been
removed from the product
For additional information about the Restriction on Hazardous Substances (RoHS) Directive
for the European Union, search for RoHS on the Thermo Fisher Scientific European language
websites.
Ce produit est conforme avec la directive européenne (2002/96/EC) des Déchets
d'Equipements Electriques et Electroniques (DEEE). Il est marqué par le symbole suivant:
WEEE Konformität
Thermo Fisher Scientific s'est associé avec une ou plusieurs sociétés de recyclage dans chaque
état membre de l’Union Européenne et ce produit devrait être collecté ou recyclé par
celle(s)-ci. Pour davantage d'informations, rendez-vous sur la page
www.thermoscientific.fr/rohs.
Dieses Produkt entspricht der EU Waste Electrical & Electronic Equipment (WEEE)
Richtlinie 2002/96/EC. Es ist mit dem folgenden Symbol gekennzeichnet:
Thermo Fisher Scientific hat Vereinbarungen mit Verwertungs-/Entsorgungsfirmen in allen
EU-Mitgliedsstaaten getroffen, damit dieses Produkt durch diese Firmen wiederverwertet
oder entsorgt werden kann. Weitere Informationen finden Sie unter
For electrolytic eluent generation, or when manually preparing eluent and regenerant, use
ASTM Type I (18 megohm-cm) filtered and deionized water that meets the specifications
listed in Ta bl e 1 .
.
Table 1.ASTM filtered, Type I deionized water specifications for ion chromatography
Contaminant Specification
Ions–Resistivity >18.0 megohm-cm
Organics–TOC <10 ppb
Iron/Transition Metals* <1 ppb
Pyrogens <0.03 (Eu/mL)
Particulates > 0.2 μm <1 (units/mL)
Colloids–Silica <10 ppb
Bacteria <1 (cfu/mL)
Contacting Us
* Iron/transition metal content not specified for ASTM Type I water
For Technical Support for Dionex products
In the U.S. and Canada, call 1-800-532-4752.
Outside the U.S. and Canada, call the nearest Thermo Fisher Scientific office.
For additional contact information
Go to www.thermofisher.com/us/en/home/technical-resources/contact-us.html.
The Dionex Aquion RFIC performs ion analyses using suppressed or non-suppressed
conductivity detection. An ion chromatography system typically consists of a liquid eluent, a
high-pressure pump, a sample injector, a guard and separator column, a chemical suppressor, a
conductivity cell, and a data collection system.
Before running a sample, the ion chromatography system is calibrated using a standard
solution. By comparing the data obtained from a sample to that obtained from the known
standard, sample ions can be identified and quantitated. The data collection system, typically
a computer running chromatography software, produces a chromatogram (a plot of the
detector output vs. time). The chromatography software converts each peak in the
chromatogram to a sample concentration and produces a printout of the results. A typical IC
analysis consists of six stages (see Figure 1).
• Eluent, a liquid that helps to separate the sample ions, carries the sample through the
ion chromatography system. The Dionex Aquion RFIC includes an eluent generator,
which generates eluent online from deionized water.
• The system can operate in two eluent delivery modes. In isocratic mode, the eluent
composition and concentration remain constant throughout the run. In the one-step
gradient mode, the eluent concentration changes over time. The delivery mode is
defined in the Chromeleon Instrument Method Wizard. For more information, refer
to the Chromeleon Help.
• The liquid sample is loaded into a sample loop manually or automatically (if an
automated sampler is installed). When triggered, the Dionex Aquion RFIC injects
the sample into the eluent stream.
• The pump pushes the eluent and sample through the guard and separator columns
(chemically-inert tubes packed with a polymeric resin). The guard column removes
contaminants that might poison the separator column.
3. Separation
• As the eluent and sample are pumped through the separator column, the sample ions
are separated. In the Dionex Aquion RFIC, the mode of separation is called ion
exchange. This is based on the premise that different sample ions migrate through the
IC column at different rates, depending upon their interactions with the ion
exchange sites.
4. Suppression
• After the eluent and sample ions leave the column, they flow through a suppressor
that selectively enhances detection of the sample ions while suppressing the
conductivity of the eluent.
5. Detection
• A conductivity cell measures the electrical conductance of the sample ions as they
emerge from the suppressor and produces a signal based on a chemical or physical
property of the analyte.
6. Data Analysis
• The conductivity cell transmits the signal to a data collection system.
• The data collection system (for the Dionex Aquion RFIC, this is the Chromeleon 7
Chromatography Data System) identifies the ions based on retention time, and
quantifies each analyte by integrating the peak area or peak height. The data is
quantitated by comparing the sample peaks in a chromatogram to those produced
from a standard solution. The results are displayed as a chromatogram and the
concentrations of ionic analytes can be automatically determined and tabulated.
The Dionex Aquion RFIC is an integrated ion chromatography system containing an eluent
generator, pump, injection valve, and conductivity detector. Other system components,
including a guard column, separator column, and suppressor vary, depending on the analyses
to be performed.
If necessary, the Dionex Aquion RFIC can be configured with a column heater for
temperature control of the column.
Dionex Aquion RFIC operation is controlled remotely by a personal computer running the
Microsoft® Windows® 10, Windows 8.1, or Windows 7 operating system and Chromeleon
software (version 7.2.9 DUa or later). Chromeleon also provides data acquisition and data
processing functions.
For communication with Chromeleon, the Dionex Aquion RFIC must be connected to a
USB (Universal Serial Bus) port on the computer or a USB hub. For details, refer to the
Dionex Aquion RFIC installation instructions.
The sample to be analyzed can be injected manually into the injection port, using a syringe.
For automated sample injection, the Dionex Aquion RFIC must be connected to an
autosampler. For more information about sample injection, see “Operation Overview” on
page 32.
LEDs
The Power LED indicates whether the Dionex Aquion RFIC power is on. Other LEDs
indicate the status of various system functions. For details, see Tab le 2 .
Figure 5 shows the user-accessible components installed on the component panel behind the
Dionex Aquion RFIC front door.
Figure 5. Dionex Aquion RFIC component panel
Pressure Transducer
Leak Sensor
The pressure transducer measures the system backpressure.
A leak sensor is installed in the drip tray at the bottom of the component panel. If liquid
accumulates in the tray, the front panel Alarm LED flashes and an error message is logged in
the Chromeleon audit trail.
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 “Pump” on page 21.
Injection Valve
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 “Injection
Valv e” on page 25.
Auxiliary Valve (Optional)
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 “Auxiliary Valve (Optional)” on
page 26.
DS6 Heated Conductivity Cell
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” on page 10.
Suppressor
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:
For more information, see “Suppressor” on page 28.
Separator and Guard Columns
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.
The column heater controls the temperature of the separator and guard columns. The
temperature can be set to between 30 and 60 °C; however, it must be set to at least 5 °C above
the ambient temperature. For more information, see “Column Heater (Optional)” on
page 27.
Eluent Valve
The eluent valve controls the flow from the eluent reservoir. The eluent valve opens
automatically when the pump is started and closes when the pump is turned off. For more
information, see “Eluent Valve” on page 21.
Tubing Chases
The upper tubing chase routes tubing from the top cover to the component panel. The lower
tubing chase routes tubing from the component panel, through the interior of the system, to
the rear panel.
The analog output connector outputs conductivity data (as a 0 to 1 V signal) to an integrator
or recording device. For connection and setup information, refer to the Dionex Aquion RFIC
installation instructions.
USB Connectors
The USB receptacle provides a connection to the Chromeleon computer. Two USB ports are
available for connecting to other USB devices. For connection instructions, refer to the
Dionex Aquion RFIC installation instructions.
TTL and Relay Connector
The TTL and Relay connector strip provides two TTL outputs, two relay outputs, and four
TTL inputs. The outputs can be used to control functions in other TTL- or relay-controllable
devices. The inputs can be used to switch the injection valve position, turn on the pump,
perform an autozero command, and send an event mark to the analog output. For connection
instructions, see “TTL and Relay Control” on page 131.
Tubing Chase
The lower tubing chase routes tubing from the rear panel to the component panel.
Tubing Clips
The tubing clips hold tubing routed from the top cover in place.
Power Switch
The power switch provides on/off control of power to the Dionex Aquion RFIC.
Main Power Receptacle
The power supply cord plugs into the AC power receptacle.
CAUTION The power supply cord is used as the main disconnect device. Verify that the
socket-outlet is near the Dionex Aquion RFIC and is easily accessible.
MISE EN GARDE Le cordon d'alimentation principal est utilisé comme dispositif
principal de débranchement. Veillez à ce que la prise de base soit située/installée près du
module et facilement accessible.
VORSICHT Das Netzkabel ist das wichtigste Mittel zur Stromunterbrechung. Stellen Sie
sicher, daß sich die Steckdose nahe am Gerät befindet und leicht zugänglich ist.
Flow Schematics
• Figure 7 illustrates the liquid flow path when the components required for producing
• Figure 8 illustrates the liquid flow path when the components required for producing
2
Description
Flow Schematics
KOH, LiOH, NaOH, or MSA eluent are installed. The required components include the
corresponding type of Dionex EGC III Eluent Generator Cartridge and a Dionex
CR-TC.
carbonate eluent are installed. The required components include a Dionex EGC 500
K
Eluent Generator Cartridge and aThermo Scientific™ Dionex™ EGC 500