Good day . i have another issue to my 8890. after replacing the fused silica in transfer line. tha air flow in FID is suddenly shutting down. then i try the detector diagnostic in the system it said test failed and need to replace the jet.
after replacing…
Hello,
this look like your plasma is not align with the cones. For the EM to failed it's difficult. You have to check for noise when it's doing it and if the counts are low when it's using mass 80. You can try to tune EM with mass 37 if you know where…
Hello,
I am currently developing a residual solvent analysis method by Gas chromatography equipped with a flame ionization detector. My sample is an API with a phosphate salt attached. One of the residual solvents of interest is triethylamine. When…
When I need information about detectors I use the following books:
Raymond P. W. Scott "Chromatographic Detectors - Design, Function, and Operation", Chromatographic Science Series Volume 73, Marcel Dekker, New York (1996). ISBN 0-8247-9779-5.
Raymond…
8/7/19
Hello,
I have had a fair amount of success with posted questions in this forum, so here is another one. I am interested in knowing more about whether the flame ionization detector I have equipped on my HP/Agilent 6890 GC is the correct detector…
Try to ignite the plasma, without fixing the shield plate. Due to poor quality of argon gas or leak on gas line, reflected power will be above the limit and prevent the plasma sustain. Sometimes, the plasma sensor fiber optics tip is damaged, needs to…
We have a lot of 1260s and 1290s in our lab, and as part of our sustainability initiatives are looking for ways to reduce our energy usage. Currently, all the instruments are left on (standby), and most of them also have the lamps on when not in use.…
Hello Inês,
Typically we use the Performance report as a general health report of the instrument. Changing plasma parameters may cause the test to fail, unless you correct the limits. Moving the sample depth will decrease sensitivity and can increase…
Hi Guys,
I have a GC that does not seperate natural gas(maily C1 and C2 with small traces of C3+), it comes as almost one peak, and for condensate (C3+) it seperates C6+, and does not seperate C3÷C5,
I Have,
1: Readjusted the split ratio Many Many…
Hello
I'm trying to setup report to have values in column "PASS/FAIL" green or red depends on result.
Can I do it as conditional formatting for column "PASS/FAIL" to mark FAIL as red based on text?
This column "PASS/FAIL" is custom field and…
This Information Applies To: Agilent 8890/8860 GC Systems with SSL, MMI, PTV, or VI inlets.
Issue
Split vent trap replacement is recommended as part of the scheduled preventive maintenance. Sometimes, it has to be replaced when the inlet pressure...
This Information Applies To: Agilent 6000 Series LC/MS systems equipped with MS40+ rotary vane pumps
Issue
Instructions on how to replace the filter in an Agilent MS 40+ pump as part of annual pump maintenance
Background
The filter in the...
This Information Applies To: Agilent ICP-OES 5000 Series (5100/5110/5800/5900) with ICP Expert 7.5.x Software
Issue
The Recommended Routine Maintenance Schedule does not adjust for the number of samples analyses or the sample matrix, both of which...
This Information Applies To: Agilent 7890/7820 GC Systems with SSL, MMI, PTV, or VI inlets.
Issue
Split vent trap replacement is recommended as part of the scheduled preventive maintenance. Sometimes, it has to be replaced when the inlet pressure...
This Information Applies To: Agilent LC pumps
Issue:
Stuck or obstructed check valves (Active Inlet Valve (AIV), Passive Inlet Valve (PIV), Outlet Ball Valve (OBV)) can cause issues such as no-flow or no-pressure, moderate to strong drops in pressure...
This Information Applies To: Agilent 1260 Infinity II multisampler, 1290 Infinity II multisampler, 1260 Infinity II SFC multisampler, and 1260 Infinity II bio-Inert multisampler
Issue
The needle bends while moving to the wash port or showing one...
This Information Applies To: Agilent OpenLab CDS 2.x
Issue
This article outlines the step-by-step instruction on how to overlay chromatograms for OpenLab CDS 2.x
Steps to Follow
Load data from result sets or single samples. See Load or add...
This Information Applies To: Agilent Lab Advisor Software, Agilent Multicolumn Thermostat
Issue:
Agilent Lab Advisor is a great tool to diagnose the issue of your HPLC. Running the tests that are relevant to your specific issue in the Service &...
This Information Applies To: Agilent OpenLab CDS (ver 2.x)
Content:
The following procedure shows how to review completed injections in a running sequence in OpenLab CDS (ver 2.x).
Steps to Follow:
Select the sequence from the Run Queue...