Hello isoterma, Maybe try a new jet ? Cleaning doesn't always get rid of restriction in the jet. I see your supply is supplying both detectors but if the pressure is on the lower side of acceptable raising the pressure may cure the issue. For the 6890…
Hello,
I will assume you mean you are using the backup restore tool for CDS 2.4 not the ECM XT import scheduler. If you have setup an import scheduler task to back the ECM-XT system up that would be self-referential and would not actually back anything…
Hello, I will take a picture when I go back to the lab tomorrow. I must also let you know that we were able to extract an old method from the GC. This method had been downloaded into the GC from before everything crashed. When using this method, the GC…
I have seen cases where the rough pump shuts down because it's working too hard, which will cause the MSD to shut down also. Typically the MSD will have an error message of "Vac Sys Fail" or something similar.
After servicing pump, test still fails. We are using n-heptane as solvent/carrier, is correct to use n-heptane for the pressure/leak test? Or, do we need to do it with isopropanol?
Hello mr.white, You can do this with a sequence summary report template: Use 'Multi Signal Plot Overlaid' as you've done already; in the properties, the signals need to be overlaid. You may group by signal e.g. FID Front signal/ FID Back signal or, if…
Sounds good. Just wanted to double check why it was not working. I had a noise and drift test fail before on LabAdvisor and it was due to a test not functioning properly. The Leak test and Pressure test both passed and system has been working fine. Thanks…
Csiquet_flex2000 my guess for your 4 signal sources the Save check box is unchecked, so you don't see them as an online signal during acquisition nor as a saved raw data file. The Signal settings under the GC Parameters is only for GC based detectors…
Do you have the Polyboost on? If not, the wavelengths below 190nm will fail. It would be good to know which wavelengths are failing. On the wavecal tab, click "Store dark current" and see where the wavelength calibration file is being saved. Then using…
Hi dubang69, Im also using export to CDF in OpenLAB 2.3 and OpenLAB 2.2 (with Data Export Addon). Unofrtunatelly second step for these revisions is to open CDF in some open source software as noreuter recommends. Im using lightweight utility UniChrom…
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...