The Dionex DP and SP Pumps are each available in isocratic or gradient configurations. The pumps support standard-bore and microbore applications. Gradient configurations provide low-pressure mixing of up to four mobile phases per pump at precisely controlled proportions and flow rates.

• Variable-speed, serial dual-piston design delivers consistent flow rates and quiet detector baselines
• Pump flow components are chemically inert, made with high-quality PEEK heads and fittings, inert polymer seals, and sapphire pistons
• Quaternary proportioning and a low-volume mixer deliver reproducible eluent mixtures
• Linear, concave, and/or convex gradients are possible
• Vacuum degas provides sealed, in-line degassing for flow reproducibil-ity and protection of eluent from contamination and degradation
• Automated integral piston seal wash prolongs seal lifetime by preventing eluent crystallization on the seal surfaces
• The pump assemblies slide out for easy access and serviceability
• User-selectable pressure limits automatically stop pump flow in the event of leaks, flow restrictions, or depleted eluent reservoirs
• User-configurable alarm features in Chromeleon allow additional responses to status or alarm conditions
• Front panel indicates the status of power, pump flow, priming, connectivity (Chromeleon Control), and alarms

Benefits of Dual Pump Configurations

Dual configurations provide independent pumping capabilities in the same module and same space-saving footprint. An SP can be field-upgraded to a DP. Configure a DP-based system according to one of the following scenarios:

• Configure the system for dual applications, either running simultaneously or independently:
  • Anion and cation separations
  • Two different anion or two different cation separations
• Use the second pump for:
  • Sample preconcentration or matrix elimination
  • Postcolumn reagent delivery for postcolumn reaction (PCR) applications
  • External water and chemical regenerant delivery
  • A backup pump for the primary application
  • Consumables cleanup or start-up preparation; preventing primary system downtime for reconfiguration

The EG Eluent Generator module provides the most recent advances for RFIC systems in a dual system format. The EG continues Dionex's technology leadership, allowing the user to generate high-purity eluents on-line and run gradient separations as easily as isocratic applications. Reagent-Free IC is the powerful combination of Dionex “Just Add Water” electrolytic eluent generation, purification, and suppression technologies. The EG can be configured for a single system or for dual system support.

EG Features

• Eluents are generated from deionized water using an EG cartridge and then polished of contaminants using one of the Continuously Regenerating Trap Columns (CR-TCs)  
• Now you can enjoy the RFIC system carbonate-based eluent generation using a carbonate cartridge and EPM Electrolytic pH Modifier  
• In addition to KOH for anion separations, NaOH and LiOH cartridges are available for specialized applications
• The EG delivers eluent concentrations from 0 to 100 mM
• Control, status, and diagnostics are provided with Chromeleon software
• Improved EG electronics provide smoother eluent delivery with minimal noise for improved peak detection in both gradient and isocratic modes
• A slide-out tray provides easy access to the EG cartridges and CR-TCs for maintenance
• Using on-line eluent generation actually extends the lifetime of pump pistons and seals because the pumps only deliver water
• Front panel displays the status of module power, CR-TC power, and leak functions

Benefits of RFIC System

• Minimizes baseline drift
• Improves retention time stability and resolution
• Provides excellent run-to-run reproducibility
• Supports both gradient and isocratic applications
• Minimizes labor and operating costs

The DC Detector/Chromatography module houses and organizes chromatography components such as valves and columns. The DC module contains three sections: (1) separation, (2) detection, and (3) automation. The lower separation compartment contains injection valves, guard, and analytical columns, and is under independent temperature control. The conductivity and electrochemical detectors are configured above the separation columns. An Automation Manager option can be configured in the upper compartment to support switching valves and other hardware required for advanced applications.

DC Features

• Three distinct sections keep plumbing organized while minimizing connection lengths, reducing delay volumes, and improving peak efficiencies
• Two options for overall thermal control offer application and budgetary flexibility
  • Dual temperature zone configuration controls the injection valve and column compartment separately from the upper compartments
  • A single temperature zone configuration controls the temperature of both compartments at one set temperature
• With either configuration, the CD cells feature temperature control independent of the other sections
• In the dual temperature zone configuration, up to five separate temperatures can be maintained simultaneously (separation section, detection section, two detector cells, and reaction coil) providing maximum application flexibility
• Independent compartment doors allow independent access to the separation or detector section without disturbing the other thermal section (with dual temperature zone configuration)
• Automatic detection of valves, CD/ED cells, and suppressor devices by software
• Manual loading of sample is possible
• Column compartment can be configured with two independent injection valves
• Column/Injection Valve panel slides forward for easy access
• Optional analog output board provides analog detection signals to data recorders
• Optional analog board also includes eight user-assignable TTL inputs that are provided for basic valve and detector operation
• Front panel displays the status of module power, injection valve position, and alarms

Expand Your Capabilities with Dual Detection Configurations

• Easily install the CD and ED detectors as plug-in devices and have a dual system in a single system footprint
  • Run anion/cation analyses simultaneously from one injection
  • Run confirmatory separations in parallel to verify components
  • Inject different sample loop sizes; eliminate reanalysis of samples at different dilutions
• Implement innovative detection schemes by pairing conductivity and electrochemical detection techniques in series on the same system
  • Determine classic anions with conductivity along with sensitive and selective ED detection of electroactive species such as iodide, sulfide, cyanide, and phenols
  • Analyze cations and electroactive amines, organic acids, and carbohydrates from a single separation

The CD and ED detectors install inside the DC compartment as snap-in devices. They can be configured in series for dual detection, or as separate detectors for a dual system.

CD Features

• Microprocessor-controlled digital signal processing detects high and low concentrations of analytes in the same run
• Supports all IC and RFIC system applications with maximum range up to 15,000 µS
• Control through Chromeleon software or locally through TTL inputs
• Mount inside the DC compartment in either of two locations
• No tools are required
• Minimizes noise and maximizes thermal stability
• Electronics are integrated between cell and detector for greater stability
• Heats CD cell independently from other chromatography components
• Innovative built-in electronics allow for easy calibration and diagnostics

ED Features

• New one-piece reference electrode provides consistency and reliability
• New handle design provides consistent torque to cell electrode for consistent installation and mounting of working electrode
• Uses microprocessor-controlled digital signal processing
• Supports dc amperometry, pulsed amperometry, or integrated amper-ometry detection modes
• New detection capabilities include use of multiple waveforms and multiple integration times to optimize detection conditions for individual analytes
• Three-dimensional display of the raw integrated amperometry data set similar to PDA data display, with cross-hairs on an isoamperometric plot used to select “slices” of the plot along the applied voltage axis (to render a chromatogram) and along the time axis (to render a voltammogram)
• Three-dimensional wireframe rendering, printing, color selection, display of apex, and other spectra on peaks in chromatograms are echoed in the integrated amperometry implementation
• The integrated amperometry mode provides complete freedom to change the waveform profile's number of segments, duration of each segment, and voltage applied at each segment 
• Control through Chromeleon soft-ware or locally through TTL inputs
• Mounts within the DC compartment in either of two locations
• No tools are required for installation
• Cell and detector electronics integrated to minimize noise, maximize electrical isolation and shielding, and maximize thermal stability
• Innovative, built-in electronics for easy calibrations and diagnostics
• Can be used in dual-detection configurations (detectors in series or systems in parallel)

The new AS Autosampler delivers high precision, reliability, ruggedness, and ease of use. It offers a wide range of options to fit your needs, including sample preparation, temperature control, and chemistry switching. The AS works with the entire ICS product line.

Configure the sampler for simultaneous injection and perform concurrent injections of a sample or standard onto two analytical systems running unique or similar applications. Improve efficiency by controlling

two independent IC systems with one autosampler through sequential injections. This setup allows different applications to be run, or doubles the throughput in one application. With simultaneous and sequential injection, you can increase sample throughput, and eliminate errors associated with multiple operators and sampling locations.

New features include reagent prime, reagent flush, and concentrate. These capabilities offer additional flexibility that range from matrix elimination to concentrate. In addition, sequences can now be run in “overlap” with the previous sample to minimize overall cycle time.