ISH, that is a very good question. Yes, you can. However, you have to be mindful of a few things. For the Deans Switch to operate optimally, the downstream pressure need to be the same on both columns downstream of the Deans switch. The MSD operates under…
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…
Hydrogen (H2) is the simplest and most abundant element in the universe. Since, it only occurs naturally on Earth when combined with other elements it must be produced from other sources. It can be produced without a carbon footprint from variety of sources…
We currently use Agilent 7890A GC with S/SL injector and FID detector using a capillary column for the analysis of crude oil composition upto C35. The remaining compounds will be reported as C36+. The temperature program is from 30 Deg to 325 Deg, We…
Hi, I have a agilent GC 7890B with FID. currently i am a facing a problem regarding this GC, problem is like that - all gases supply is ok, no leakage is found in detector portion. i have cleaned the FID & Jet but flame is not burning. So kindly suggest…
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.
Hi, exactly what you said and like what Lance Nelson pointed out,the septum purge flow cannot set on GC 6890 but we can control the septum flow by reduce split vent value or split ratio ,so you can reduce split vent value in method 1 from 197.1 mL/min…
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…
good day!
tell my please..
I have the air generator and his out pressure consist 52 psi, and and air consumption is 1000 ml/min. the EPC module GC 7890b work in rang 55-80psi. I have 2 detector FID. Tell my - with this generatorom may be worked ?…
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...