Hello vtpolywood ,
What type of GC do you have, if I may? If it's an 8890 for example there are some Diagnostic tests built-in that you can run on the Cool On Column inlet. Have you recently changed gas tanks (whether carrier, FID fuel, air or makeup…
In MSD Chemstation, you can specify which signal to use for quantification: TIC, Target Ion, or GC Signal (for GC detectors like FID, TCD, etc.) Go to the Calibrate menu and select Edit
Compounds. On the Compound Table Identification tab, look for the…
Hi,
I plan to attempt some SimDist analysis in accordance with D2887 on my agilent GC-FID. I was hoping that I could achieve this without additional software (i.e. just through manual manipulation of the data acquired by Chemstation), but apparently…
Our micro GC 990 is Natural Gas Analyzer B and B extended version with 3 channels (PoraPLOT U, 6-meter CP Sil 5 CB, CP-Molsieve 5A). We are having trouble with data processing. We have 2 calibration gases from Agilent (Natural Gas mixture and Universal…
ICP-MS MassHunter Version 4.1. I cannot Startup Standard Lens Tune!
The message appears "Failed to add Startup/Hardware tasks to Queue; Enter path for batch folder".
As usual (my Batchs)- everything works.
Hello,
Our Headspace sampler 7697A Leak test failed. Leak test failing at the stage 1 off the Restriction and Pressure Decay Test.
Going from there, the sample probe was replaced as well as the pressurization solenoid valve but without success.
…
Hi everyone.
We have a 8890 Agilent GC with nickel catalyst and FID detector. We would like to use hydrogen as carrier gas, but we don’t know the right flow rates, because the manual is indicating flow rates only for using helium as carrier gas.
For…
Hi!
I still need help yes, please!
- On the machines (GC system and Injector) it just says HP6890 (see photos attached)
- The PC we employ is an old Windows XP running one, that was used to run the GC-FID before we want to control it with the serial…
Hi, I would suggest to test the same without column installed to the FID. If problem looks similar check for leaks at the FID gas lines and clean the FID. If not clean the inlet and replace the split vent line and filter. Maybe try a new column.
BR…
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...