Hi Anatoly,
if the vapour pressures of the solvents are comparable it doesn't matter that you inject different solvents and even if they are very different like water vs. any organic solvent, the error is small.
In direct injections and cold-on-column…
Hi azrael, The FID is not a pressurized detector so there is no pressure test. You may wish to explore our GC Fundamentals series on our website. See Below for a link Fundamentals of Gas Chromatography (GC) - Part 1 | Agilent Regards James
When Air gap is 0.2 and the flow rate is 2.1 ml/min then the peak area found 287 by FID but when the air gap is 0 and flow rate is 1.47 ml/min then the area reduced to 141. Where analysis performed by Autosampler.
I think we do this at my lab but not with a valve. We use a plot column and anayze headspace above a water sample. We test for methane ethane ethene and propane useing an FID. The integrated gastight syringe with a valve in it from Fisher helps. We use…
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…
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 MarKon ,
Those the only options I would be familiar with and I can recommend.
The calibration indeed seems to only address the sample transfer from tray to turret, and I don't imagine it has anything to do with the Gripper. Since you are…
Two instruments are running off the one computer (two cards). One is a 6890N/5973N, one is 6890N/5975 with Gerstel Rail. Neither instrument has an FID, just the one MS detector, so only one signal from each. It doesn't seem to matter if both instruments…
Hi I had a question about GC MS Split (gc to FID/MS). I have a thermo splitter that has no auxillary flow to counteract the ms vaccuum, but want to change out the capillaries that come recommended with the splitter. The recommended capillary dimensions…
This Information Applies To: Agilent ICP Expert software.
Issue
The software version is often asked and is a valuable information: to see if any updates are needed, if certain options are available etc.
Steps to Follow
Launch ICP Expert...
This Information Applies To: Agilent OpenLab CDS
Issue
This article provides step-by-step instructions to calculate peak-to-valley ratio in OpenLab CDS.
Background
The peak-to-valley ratio is calculated to indicate the quality of peak separation...
This Information Applies To: Agilent 6500 Series Q-TOF LC/MS systems, MassHunter Workstation 10.1 or below and MassHunter Workstation 11.0 .
Issue
Fully reset the Q-TOF LC/MS system via a power cycle without venting. For users who experience slow...
This Information Applies To: Agilent 5200/5300/5400 Fragment Analyzer, Femto Pulse, ZAG DNA Analyzer, and Oligo Pro II systems
Issue
The volume of sample used by Agilent parallel capillary electrophoresis systems during a run.
Resolution
The...
This Information Applies To: Agilent 2100 Expert software, 2100 Expert Security Pack, 2100 Bioanalyzer
Issue
When opening the 2100 Expert software and using the Security Pack, the error message " Start of launcher application failed - The requested...
This Information Applies To: Agilent 6890, 6850, 7890, 8890, 8860, Intuvo 9000 GC systems.
Issue
The exchange of the ignitor in a Flame Photometric Detector (FPD) may be required in the following scenarios:
Preventive or periodic maintenance...
This Information Applies To: Agilent 1290 Infinity Quaternary Pump G4204A, 1290 Infinity II Flexible Pumps G7104A/C, and G7131A/C.
Issue
If the flexible/quaternary pump does not generate flow or build up pressure, it could be due to a stuck inlet...
This Information Applies To: Agilent 5200, 5300 and 5400 Fragment Analyzer systems
Issue
Separation times for the Fragment Analyzer for each array format and kit.
Resolution
Caution : The times in this article are the length of time...
This Information Applies To: Agilent 5200/5300/5400 Fragment Analyzer, Femto Pulse, ZAG DNA Analyzer, Oligo Pro II, ProteoAnalyzer systems
Issue
Guidance for installing the Agilent parallel capillary electrophoresis instrument controller and/or...
This Information Applies To: OpenLab CDS (version 2.x) system
Issue:
This article explains how to export OpenLab CDS 2.x data as Archived file.
For copying OpenLab CDS 2.x data to another Projects or another OpenLab CDS systems, you can use data...