INSTRUMENT CONTROL PARAMETERS: GCMS-04 -----------------------------------------
C:\MSDCHEM\1\METHODS\60m_VOLITILES_230511_1.M Tue May 30 13:44:52 2023
Control Information ------- -----------
Sample Inlet : GC Injection Source : GC ALS Mass Spectrometer…
It's best to set the system to vent and turn off the power first. You do not need to actually vent it/open the MS.
Lift off the analyzer cover as shown.
Remove the three T-20 screws at the red arrows.
Then the entire side panel will pivot out…
Related question. Simple GC with a valco rotary valve, 10 position, 6 position, whatever. what is the scfm requirement for that pneumatic device over the course of a method run where after half a minute the valve switches, then 15 minutes later switches…
Good afternoon everyone,
We are performing the media replacement accuracy test in our 850-DS Dissolution Sampler Station and our test is failing (specification <=9mL), as per table below:
Friday Run:
#
Initial Weight
Final Weight
Difference…
Hi everyone, hoping I can get some help with this, as I've tried many solutions and so far nothing has worked longer than a few hours. I'm running at 7890A with 5975C MS. Yesterday morning, Instrument Control froze after running our opening standards…
I have been using Chemstation with my Agilent 7890/5975C for a few years now. I closed down the software and machine to perform a source cleaning.
Now, when I attempt to open Chemstation it state: "GC error: CreateNotificationHost() in InitializeDevice…
By chance is your TCD plumbed to your FID, non destructive to destructive detector configuration? Or using a splitter device of some type? A picture from inside the oven would help. Have you tried the split vent maintenance yet? I would do this even without…
It is only possible to subtract a background spectrum from a TIC in MSD ChemStation (File > Subtract Background (BSB) ), not an entire blank run's chromatogram. If this is data being collected by a 2D GC detector (FID, ECD, etc...) then you can use the…
Error : Data Subscriptions Failed. Are inbound Ports Blocked? Is there Right Type of GC at IP Address? GC does seem to be connected but not the MS. Does anyone have suggestions on what the problem might be?
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...