NGES Operating Manual - NGES Operating Manual - NGES - NGES Operating Manual - NGES - map

Product Tree: Chromatography > Ion Chromatography > Suppressors > NGES
Document Type: Operating Manual

Dionex NGES
Preface
Access documentation
Special notices, symbols, and cautions
Contact us
Introduction
Software requirements
Power requirements
Chemical purity requirements
System components
Electrolytic regeneration with the NGES
Cation suppression with the NGES-C
Anion suppression with the NGES-A
Installation
Assemble the backpressure coils
Assemble the gas separator waste tube
Calculate the electrical current for the NGES
Electrical current levels for the NGES-A
Electrical current levels for the NGES-C
Configure the NGES in the Chromeleon CDS
Install the NGES in the thermal compartment
Operation
Perform start-up tasks
Use the NGES with AutoSuppression recycle mode
Configure the flow path connections for AutoSuppression recycle mode
Use the NGES with AutoSuppression external water mode
Configure the eluent flow path connections for AutoSuppression external water mode
Connect the NGES to a pressurized bottle for AutoSuppression external water mode
Connect the NGES to a peristaltic pump for AutoSuppression external water mode
Use the NGES with AutoNeutralization mode
Neutralization theory
Configure the flow path connections for AutoNeutralization mode
Regenerate the pump trap column
Calibrate and condition the NGES
Anion system blanks
Cation system blanks
System calibration
Condition the NGES-C
Analysis application examples
Analysis of acid samples containing high concentrations of transition metals
Anion example applications
Dionex IonPac® AS11 Gradient
Dionex IonPac AS11 Gradient Analysis of 10% Sodium Hydroxide
Dionex IonPac AS12A Isocratic Analysis of 25% Sodium Hydroxide
Dionex IonPac AS12A Isocratic Analysis of 20% Ammonium Hydroxide
Dionex IonPac AS12A Isocratic Analysis of 25% Tetramethylammonium Hydroxide
IonPac AS12A Isocratic Analysis of 25% Tetrabutylammonium Hydroxide
Cation example applications
Dionex IonPac CS12A Blank and Standard Analysis
Dionex IonPac CS12A Analysis of 24% Sulfuric Acid
Dionex IonPac CS12A Analysis of 25% Acetic Acid
Dionex IonPac CS12A Analysis of 10% Hydrofluoric Acid
Dionex IonPac CS12A Analysis of 22% Phosphoric Acid
Prepare the NGES for storage
Troubleshooting
Electrolytically regenerated suppressor displays an alarm state
Small or increasing analyte peak areas
Perform chemical regeneration
Perform electrolytic regeneration
Perform full/extended regeneration
High background conductivity
Drifting baseline or noisy baseline
Decreased sensitivity for all analytes
Out of range backpressure
System backpressure increases over time
Liquid leaks
Poor or unstable recovery of certain peaks
Peaks and spikes in the absence of an injection
Low sample response (AutoNeutralization mode only)
Low neutralization capacity (AutoNeutralization mode only)
Cleaning
Remove metal contaminants or precipitates
Remove organic contaminants
Legal notices
Copyright and trademarks

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