Your second sample set did not start because there is a conflict that could not be resolved. Instrument failures can be separated into method or sequence.
If you select your (failing) instrument method and press "Setup", does the instrument start equilibrating…
Our lab just got a GC/MS-FID installed and we are using MSD Chemstation data analysis instead of mass hunter. However, is there a way to only integrate the GC-FID tic and not the tic used for mass spec? (I hope that makes since) Or is it set up to integrate…
Hi Carol_Ultivo , There is always a trade-off or balance to be struck between Scan speed, mass resolution and sensitivity in any quadrupole mass filter. So, if you decrease the resolution and keep scan speeds the same you will naturally get an increase…
I have a 7890 and 5977a which have been sitting for a few years as the result of a failed business venture, I did some successful spme analysis on it a year or so back but just tried some tests from the ALS and it fails. I'm an absolute novice with this…
I am having difficulty with lighting the FID on my 5890 GC. I took apart the detector and cleaned as best as I could. I removed the jet and cleaned it on a sonicating bath. However, I am still unable to thread a syringe cleaning wire through the jet.…
Thanks, Marty! I'm unfamiliar with intelligent reporter, but it looks like that's what I need. This would be for a single injection. I would need it to display as another line under the main results, with an obvious notation, like pass/fail or reportable…
Hello, I have the new MassHunter. Well, my P/A factor has failed. :-( do I correct this? I don't understand how to correct it. I am supposed to select a measurement from the "Load Mass List from Method". and added it. Unfortunately, the Current Value…
The signal count is lower between the DFTTP/Degrad check with each analytical run. The analytical run acquisition is pointing to the dfttp tune file.
A new syringe has been replaced. Inlet maintenance is done every 4-5 analytical runs; this instrument…
Hello everyone!
I'm currently working on a new (for my company) method of quantifying acrolein by GC-FID. I have a big problem with the appropriate weight of the standard. According to the article, I should add the right amount of acrolein to the CS2…
This Information Applies To: Agilent GC Systems
Issue
Excessive baseline noise can be introduced at different points including sample preparation, sample introduction, separation, and the detector. The excessive background can cause reduced signal...
This Information Applies To: Agilent GC Systems
Issue
Baseline instability that is not reproducible across multiple runs can be introduced at different points including sample introduction, separation, and the detector. The baseline instability...
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...