Hi all,
New to the forum, and having a few issues with our analytical 1260 HPLC. Main problem currently is an intermittent error on the auto sampler when trying to inject samples, it doesn’t happen necessarily at the first injection in each sequence…
Which voltage test point? The sideboard is permanently damaged if the cables are connected to it while the power is on. Did that happen?
Notice in your picture above that the HED is set to On.
If the HED power supply is not functioning properly…
Have you checked that your stock standards are not contaminated and tried a second source of SIC. Do you run He in addition to nogas and does it only fail for nogas but pass in He?
I've also seen Sb stick around in the tubing, autosampler probe, and…
Hello, How often does your reference amount for the compounds change? If it never changes or changes on an infrequent basis I would suggest using a constants file in custom calculator. Also we have seen syntax issues with expressions in IR when using…
Agilent 1200 Series Analytical Fraction Collectors_ Continues to FAIL initialization, also error code 3833 and error message needle too long, too short or missing. please Advise
I have the headspace autosampler 7697A attached to a GC 7890A. I have two issues. the first is a growling noise when the gripper moves in the downward motion. Not the entire way just the middle third. I am guessing a service call will need to be made…
Hello,
That will work but what value are you displaying? If you want the logic to be if any injection fail it shows unmet then you would need to store and evaluate the logic. I would have a hidden column that converts met and unmet to 0 and 1. You…
That's interesting. I wonder if there are any differences to be expected between a 6890N and a 7890 GC when using Chemstation on the 6890N and Openlab 2.3 on the 7890 with FID? Also, would there be any differences in the signal to noise and dynamic range…
Hello, Finally we were able to resolve, for some reason the scheduled task that is supposed to generate the certs at startup was failing. Recreating and running the task fixed the certificate after rename issue, and now the client is able to connect to…
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...