Agilent | General GC FAQs By Usage Category

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Application issues

Test Probe Mixture for Agilent J& W Ultra Inert columns

What are the Criteria for Choosing Between an On-Column and Splitless Injection? - General GC

What are the Steps to Inject Liquid Samples Containing a Range of High and Low Boilers? - General GC

What Type of Septa are Recommended with SPME Injections? - General GC

What are the Considerations / Tips for Method Development? General GC

What is the Effect of Column Temperature on the Separation of Herbicides? - General GC

What are Considerations for Using Cryogenic Operation? - General GC

What are the Considerations in Choosing the Right Column for an Analysis? - General GC

Chromatographic issues

What are the Possible Causes of Resolution Loss and Retention Time Shift After Installing a New Column? - General GC

What are the Possible Causes for Ghost Peaks or Carryover? - General GC

What are the Possible Causes of a Wavy (or a wandering) FID Baseline? - General GC

What are the Steps to Troubleshoot Baseline Instability? - General GC

What are the Possible Causes for Peak Tailing? - General GC

What are the Steps to Troubleshoot a Retention Time Shift? - General GC

What are the Steps to Troubleshoot the FID Noise / High Background? - General GC

What are the Steps to Troubleshoot Peak Shape Problems? - General GC

What are the Consideration for Setting the Correct Injection Port Temperature? - General GC

What are the Steps to Calculate the Vapor Volume of Liquid Samples? - General GC

What are the Recommended Tube Conditioning Temperatures / Times? - General GC

What is Injection Port Backflush and What is the Impact on an Analysis? - General GC

What are the Steps to Condition a Capillary Column? - General GC

Can Sample Throughput and Analysis Speed be Increased by Using Megabore Columns? - General GC

Configuration

GC Capillary Column Degradation

Error messages/System not ready

What is the Low Gas Alarm System? - General GC

What are the Possible Reasons Why the Cooled Injection System (CIS4) Doesn't Cool Down? - General GC

What are the Possible Reasons the TDS Doesn't Inject Despite System Ready? - General GC

What are the Possible Reasons for a CIS Inlet Pressure Shutdown? - General GC

What are the Possible Causes of a Sudden Loss of FID Sensitivity? - General GC

What are the Possible Cause that the Run Does Not Start Following Autosampler Injection? - General GC

Familiarization

What is a Flow Modulator and How is it Used? - General GC

What is the Significance of "N" (Number of Theoretical Plates) for a Given Column? - General GC

What are the Steps to Properly Shut Down a GC? - General GC

How does the Agilent Sulfur Chemiluminescence Detector (355 SCD) Function? - General GC

What is the Theory Behind the Agilent Nitrogen Chemiluminescence Detector (255 NCD)? - General GC

What is Meant by the Term "Multi-Port Valve"? - General GC

What is a Liquid Sampling Valve and How is it Used? - General GC

What is a Multiposition Valve and How is it Used? - General GC

What Sample Loop Types are Available for Gas Sampling Valves? - General GC

Why is Glass Wool Added to an Injector Liner? - General GC

What are the Steps to Split a Single Injection Onto Two different Columns / Detectors? - General GC

What are Low Bleed Stationary Phases for Gas Chromatography Columns? - General GC

What are the Most Commonly Used Injection Port Liners? - General GC

What Gas Traps are Recommended for Agilent GC? - General GC

What are the Steps to Install a Glass Press-Fit Connectors / Splitters to Fused Silica Columns / Tubing? - General GC

What is the Recommended Purity for Carrier Gasses? - General GC

Can House Air be Utilized for the FID Instead of Bottled Air? - General GC

Can Argon be Utilized as a Carrier Gas? - General GC

What are the Considerations for Injecting Samples Neat? - General GC

What are Pyrolyzers? - General GC

What Different Types of Pyrolyzers are Available? - General GC

How Does a Resistively Heated Pyrolyzer Function? - General GC

How Does a Microfurnace Pyrolyzer Function? - General GC

How Does a Curie-point Pyrolyzer Function? - General GC

What is the Most Appropriate Cryogenic Application Coolant? - General GC

What Gases are Recommendations for GC Analysis? - General GC

What are the Considerations for Selecting a Flow Meter? - General GC

What is Agilent’s Flip Top Inlet Sealing System? - General GC

Can a Switching Valve be Configured to Behave Like a Stream Selection Valve? - General GC

What is the Appropriate Amount of Glass Wool in a Liner? - General GC

What is an Agilent Ultimate Union? - General GC

Can Different Split Ratios be Set For the TDS and CIS Systems? - General GC

What are the Steps to Obtain Maximum Performance when Using a Deans switch with PLOT columns? - General GC

Why is the Effective Internal Diameter of the PLOT Column Necessary when Using the Deans Switch? - General GC

What are the Steps to Determine a PLOT Column Effective Internal Diameter for a Deans Switch Application? - General GC

What is Thermal Desorption and How Does It Work? - General GC

General

What Types of Low Gas Alarm Systems are Available? - General GC

End of Guaranteed support- Gas Chromatography

Asset Maximization Services-Gas Chromatography.

End Of Guaranteed Support Instrument Transition Plan-Gas Chromatography.

Gas Chromatographs which reached End of Guaranteed support

Spots on PLOT columns and will they affect the performance - GC Hardware

GC Column Test standards – GC Hardware

What Repair and Calibration Services are Available for the Flow Meter? - General GC

Link for local seminars, trade shows, customer training courses - General GC hardware

Is a Tool Available to Fix the Ferrule to a Capillary Column? - General GC

What is the Maximum Injection Volume of Combi PAL? - General GC

What Auxiliary Sampling Devices are Available? - General GC

How Many Heated Zones are Required to Heat Two Valves? - General GC

What are the Part Numbers for the Nanoliter Adapters? - General GC

Do Agilent GCs Contain Asbestos? - General GC

What are the Steps to Obtain a Material Safety Data Sheet (MSDS) Online? - General GC

What is the Part Number for the Agilent Column Installation Tool? - General GC

What are Gas-Phase Microfluidics Products and What are Their Applications? - General GC

What Parts/Adapters are Required to Connect Capillary Column to Valves? - General GC

What Sample Loops are Available for a Liquid Sampling Valve? - General GC

What are the Possible Uses of Valves in GC? - General GC

Where are Valves Typically Mounted on an Agilent GC? - General GC

What is the Reference Term 26s/42/HP Used in Agilent Syringe Listings? - General GC

What Types of Gas Chromatography Syringes are Available? - General GC

Maintenance

To increase the GC column life-General GC

Stand-by mode or Not Ready mode with dirty samples- General GC

What Indicates an Activity Problem with an Injector Liner and How is it Resolved? - General GC

Which O-ring is Recommended for the Agilent Flip Top Inlet? - General GC

What are the Steps to Install an Agilent Flip Top Inlet Sealing System? - General GC

What are the Possible Causes for a TCD Filament Fault Out While Performing a Continuous Analysis? - General GC

What are the Possible Causes for TCD Filament Burn Out Despite Adequate Carrier Gas and No Leaks? - General GC

What is the Process for Refurbishment or Repair of an ECD? - General GC

What are the Steps to Properly Clean a FID Jet? - General GC

What Indicates a Need to Clean or Replace a FID Jet? - General GC

What are the Possible Causes of FID Collector / Ignitor Glow Plug Corrosion? - General GC

What Indicates the Liner or Glass Wool Need Replacement? - General GC

What are the Steps to Leak Test Valves? - General GC

What are the Steps to Install a Capillary Column into a FPD? - General GC

What are the Steps to Install a Capillary Column into a Volatile Interface (VI)? - General GC

What are the Steps to Install a Capillary Column in a FID? - General GC

What are the Steps to Install a Capillary Column into a NPD? - General GC

What are the Steps to Install a Capillary Column into a TCD? - General GC

System communication issues

What are the Steps to Troubleshoot HPIB Communication Problems? - General GC