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gcchem179
Using the Agilent 7890A. Column installed with no leaks detected. Both the front and back detector are set to 300°C, gas Flow Rates - Hydrogen: 45mL/min, Air 450mL/min and He 1.0mL/min. The split flow is 80mL/min.  Following initial start up the front detector attains and maintains the requisite flow rates and ignites with no issue.  The back… (Show more)
in Gas Chromatography
camilalima
when we are trying injec VOC, this image appear and the frase in system says: "Syringe volume out of range"
in Gas Chromatography
cbm
The menu "Inlets Maintenance" (Maintenance/Front Inlet) is showing ALS counters after upgrading Agilent GC 8890 to firmware to v2.1.0.626. Pressing the "Perform Maintenance" link text only allows for "Replace Syringe", and not liner, septum, etc. as expected.   The correct menu is accessible through the browser connection, but not the 8890… (Show more)
in Gas Chromatography
ericedge
Am analyzing air samples with a PLOT column for C2-C5 and DB1 for C6-C12.  For data analysis,  PLOT prefers Classic baseline correction, while DB1 prefers Advanced.  Near as I can tell, CS requires one or the other; that is cannot apply different corrections to different columns.  Does anyone have a workaround?  Thanks 
in Gas Chromatography
sergio.echavarri
I'm doing Injection Sensitivity test for GC using FID Performance Evaluation Sample Kit. I'm not using an Integrator, I'm using ChemStation. I know that the typical amount obtained using ChemStation is around 4000 pA*s. What would be the specification? No less than 400 pA*s? No less than 1000 pA*s? Thank you for your help.
in Gas Chromatography
rclement
Anyone have a copy of the service manual for Agilent 6850?  I find the one for the 6890 pretty easily online, but not the one for the 6850.     Thanks.
in Gas Chromatography
steffanj
Hi all,   I am running a method to detect 4ethylguiacol and 4ethylphenol and am running into a strange issue. When I run my 100ppb standard, my ISTD (d6phenol) turns out perfect, as does my 4eg results (99.94ppb), 4eg is detection ions are 107 and 122 (107 being the quantifier ion). However, I am not detecting any 107 ions, but are detecting 122… (Show more)
in Gas Chromatography
carlos_vargas
Click to view contentAgilent Support Engineer Insights   This Information Applies To: Agilent 7693 Automatic Liquid Sampler   Issue: You may need to replace the syringe of the automatic liquid sampler, in case it is worn or dirty.    Steps to follow: Failure to use an on-column syringe when injecting into an on-column inlet could damage the injector, syringe and…
in Gas Chromatography
michaelw
I am using an agilent 6890 split splitless injector with a dbwax to analyze 10% ethanol solutions for trace residual solvents such as acetonitrile and dmso.  Due to the massive ethanol peak compared to the other peaks, I cannot "see" the minor peaks.  What is the best way to handle this situation? 
in Gas Chromatography
steffanj
Hi,   I am running a beginner at GC and am using a GC 6890N with a 5975 MS and I am getting a regular back inlet pressure shut-down message when I try to prep my run. Can I get some assistance on why this may be happening?   Thanks,   Steffan
in Gas Chromatography
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