What are the inlet and column configurations, flow rates, pressures, and timing setpoints? The fastest way to share that is to copy/paste the contents of the file acqmeth.txt that lives underneath your specific Our_Run_Method_Name.M subdirectory in Windows…
Yes - it was a bit of a mess - but I was able to fix it. Thanks for the heads up. Not everything could be fixed in the computer portion of the method. I had to go into the GC configuration and fix it there.
Thank you!
The light hydrocarbons up to C3/C4 range are difficult to separate with a HP-PONA or similar column unless you have a thick film. You may be able to get it by starting at sub-ambient temperature. Here are a couple of references from similar columns: …
Thank you for the suggestions. Yes, some of what I'm doing does not require the ISTD but I leave it in the analysis method b/c of needing it in some of the work. I haven't had a chance to work on this in a couple of weeks, but will definitely keep it…
Hello Adrsto ,
I apologize for the delayed repsonse.
It is not possible to use the NIST algorithm itself within Unknowns Analysis. As you mentioned, you can adjust the forward and reverse settings and enable the Adjust Score option, which from the…
Hello Lstephan ,
I apologize for the delayed response.
Errors of this type generally point to an issue with a preferences file. The first thing to try is clearing these using the Restore User Settings tool found in the Quant Tools group in the start…
This Information Applies To: Agilent GC Systems
Issue
Peak fronting is present in a chromatography peak when it has an excessive asymmetry with a leading edge. A normal peak is almost symmetrical.
Other chromatographic problems are identified...
This Information Applies To: Agilent GC Systems
Issue
A shift in retention time can occur for single, multiple or all peaks.
Other chromatographic problems are identified in Basic Troubleshooting for GC Systems . Regular maintenance of your instrument...
This Information Applies To: Agilent GC Systems
Issue
A change in peak size can occur for single, multiple or all peaks.
Other chromatographic problems are identified in Basic Troubleshooting for GC Systems . Regular maintenance of your instrument...
This Information Applies To: Agilent GC Systems
Issue
Peak splitting is when a single compound is shown in the chromatogram as two peaks usually unresolved, or one of the peaks is a shoulder.
Other chromatographic problems are identified in Basic...
This Information Applies To: Agilent GC Systems
Issue
This test isolates the point of contamination to the sample introduction system, which includes the gas supply, gas supply lines, and the sample inlet. It does not include the syringe or autosampler...
This Information Applies To: Agilent GC systems
Issue
Peak tailing is present in a chromatography peak when it has an excessive asymmetry with a trailing edge. A normal peak is almost symmetrical.
Other chromatographic problems are identified...
T his Information Applies To: Agilent 8890/8860/7890/7820/6850/6890 GC Systems with TCD (Thermal Conductivity Detector)
Issue
Problems observed with thermal conductivity detector (TCD) results can have different underlying causes.
Resolution...
This Information Applies To: All GCs, 6890, 6850, 7890, 7820, 8890/8860, Intuvo 9000
Issue:
This article is a troubleshooting guide for when the Flame Ionization Detector (FID) does not ignite or the flame keeps going out.
Cause:
If the FID...
This Information Applies To: Agilent GC Systems with Flame Ionization Detector (FID)
Issue:
The Flame Ionization Detector (FID) jet could become clogged with ferrule material, column bleed, or heavy molecular analytes. The clogged jet will affect...
This Information Applies To: Agilent GC Systems with Split/Splitless (S/SL) inlet
Issue
Different liners are required for different high concentration, split analysis techniques including:
General use liners
Auto inject, general use
Auto...