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,
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…
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…
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…
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…
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.…
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…
This Information Applies To: Agilent 7890A and 6890 Gas Chromatography Systems
Issue
Agilent Nitrogen Phosphorus Detectors (NPDs) use three different types of beads with different characteristics. The NPD method settings within the GC method are...
This Information Applies To: Agilent Binary and Quaternary LC Pumps
Issue
When performing a gradient analysis, it’s important to know what component determines composition if it becomes necessary to troubleshoot chromatographic inconsistencies....
This Information Applies To: Agilent ProSize, Fragment Analyzer, Femto Pulse, and ZAG Analyzer
Issue
The ladder, marker, and sample peaks in the affected run have taken considerably longer to migrate than expected.
Late migration is most often...
This Information Applies To: Agilent 4150 and 4200 TapeStation systems.
Issue
The TapeStation controller software displays a warning message, notify users to replace the needle after 3840 piercings. If the maximum number of 4480 pierces is reached...
This Information Applies To: Agilent AriaMx Reall-time PCR system
Issue
After importing data from a LIMS file or opening a template that has been created for a different dye configuration, the following message could be displayed: " Dye Configuration...
This Information Applies To: Agilent AriaMx
Issue
IQ/OQ services for the AriaMx system are not available.
Resolution
If interested, please inquire with your Sales/Services contact on the Functional Check Service, optional procedure of the...
This Information Applies To: Agilent AriaMx real-time PCR system, AriaMx real-time PCR optical modules
Issue
The AriaMx has the capacity to accommodate six optical modules, and the scanning optics configuration ensures distinction between fluorescent...
This Information Applies To: Agilent AriaMx real-time PCR system
Issue
Can I use reaction volumes larger than 30 μL on the AriaMx?
Resolution
There is no problem with using higher reaction volumes, but the instrument performance can only be...
This Information Applies To: Agilent OpenLab CDS software version 2.3 or higher.
Issue
Chromatogram gridlines can help users to get a better understanding of the scale of the peaks. However, in some cases, the gridlines are not desired, such as...
How to Reset the Agilent GC/MSD Tune File to Default Values
Multiple Results
This Information Applies To: Agilent GC/MS MassHunter Acquisition Software
Issue
If there is a problem with the current tuning parameters and a need to tune from the default parameters, see the following procedure to reset the EI tune file (atune...