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…
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…
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…
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…
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.…
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…
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 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…
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…
Requesting Tune Control on your GC/MSD System Using OpenLab CDS
Multiple Results
This Information Applies To: Agilent Single Quadrupole GC/MS systems controlled by OpenLab CDS.
Issue
The OpenLab CDS user needs to request tune control before any tuning or vacuum control of the GC/MSD can be performed.
Steps to Follow
...
This Information Applies To: Agilent Lab Advisor Software
Issue:
When connecting your LC instrument with the Agilent Lab Advisor Software, a pop-up message may appear called 'License Check'. The message prevents you from connecting the Lab Advisor...
This Information Applies To: Agilent OpenLab CDS
Issue
When analyzing a sample, the chromatogram may show baseline drift. The obtained signal may be caused by analytes as well as by dilution solvents, mobile phases, additives etc. To get a cleaner...
This Information Applies To: Agilent OpenLab CDS
Issue
This article outlines step-by-step instruction to filter sample type using Enumeration in Reporting.
Prerequisites
The privilege Data Processing > Print results reports is required....
This Information Applies To: Agilent single quadrupole and triple quadrupole GC/MS systems
Issue
During troubleshooting, it can be useful to isolate the MS detector from the rest of the GC system (sample introduction, inlet, column etc.).
Background...
This Information Applies To: Agilent 6890/7890/7820/8860/8890 GC systems
Issue
Blanking off a GC detector can help locate the source of issues such as baseline noise, baseline spikes, elevated baseline, or detector output/performance issues.
...
Viewing MSD Temperature and Vacuum Values on GC/MSD Systems Using OpenLab CDS
Multiple Results
This Information Applies To: Agilent Single Quadrupole GC/MSD Instruments controlled by OpenLab CDS
Issue
Checking the MSD temperatures and vacuum reading is required when the instrument is pumping down or to check values during troubleshooting...
This Information Applies To: Agilent GC systems
Issue
Before most maintenance procedures, the GC must be set to safe temperatures, pressures, or flows. You can create and save the maintenance method in the controlling software or the GC itself....
This Information Applies To: Agilent 1100/1200 Series G1310A Isocratic Pump, G1311A Quaternary Pump, and G1312A/B Binary Pump modules
Issue
This article shows different options to troubleshoot low pressure or no flow issues in 1100/1200 series Isocratic...
Extracting Total Wavelength Chromatograms or Max Wavelength Chromatograms from 3D chromatogram data in OpenLab CDS
Multiple Results
This Information Applies To: Agilent OpenLab CDS (version 2.3 or later)
Issue
This article describes how to extract and reprocess Total Wavelength Chromatograms or Maximum Wavelength Chromatograms from 3D UV data in OpenLab CDS.
Steps to Follow...