I have an Agilent 7890A with a split/splitless injector and FID. The FID has been experiencing a falling baseline signal that triggers the instrument to relight the flame unless I lower the lit offset value. As it gets worse, I have to set the lit offset…
HP 5890 II not responding. After power-up, initiates "Passed Self Test" routine but stalls at that point. The oven works, and FID is ignited but the light by "Not Ready" is lit up. ChemStation program states: "GC Not Found. Check that GC is Correctly…
Hi all, we have Error "1467: Option gas flow rate is out of acceptable range" when trying to ignite the plasma. But the thing is, we don't use option gas (we are running in laser ablation mode) and have nothing connected. We think it might be related…
Hi, I am wondering if the FID detector requires nitrogen make up flow while in standby mode or is it sufficient to have the FID idle at a temperature above 100 to protect it in downtime.
Thanks.
Hello
I wish if i can find solution the this problem
I don't have access to ignite plasma because after i turn on chiller ( Temperature the peltier it ouside range -40 ± 2 )
some times take -52 C or more .... ( i notice there are not value exact…
Hi, Have this issue with an Agilent 6850 GC: The system performs normally during the pre-run: the oven temperature, front inlet total flow/inlet pressure and signal 1 valve values are all normal/stable. When we switch to the test method and start sample…
I use a 8890 series GC with MSD, FID, TCD. Splitter from column to MSD & TCD or FID Multimode Inlet. 30m DB-5 Column. MMI 325C, FID 325C. 10 C/min ramp until 325 and hold for 15 min. 45 min run time It's 98% used for QC using TCD & MS. However there is…
Additionally, the detector will not light regardless of whether the column is installed or not. I can hear an ignition happening but the detector fails to stay lit every time.
I am having a similar issue. First, I replaced a needle seat and then the auto-referencing failed because I failed to recognize that the black sample holders needed to be removed. The needle mechanism seemed forever stuck in the parked position. I was…
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...
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...