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 Analytical Fraction Collector G1364A/C/F and G5664A/B
Issue
If users do not configure the actual height of the test tubes used to collect fractions, they might see an error of "arm movement failed" in the fraction...
This Information Applies To: Agilent AriaMx real-time PCR system, AriaMx Real-Time PCR software
Issue
Agilent has not validated and does not support running the AriaMx software on Azure Virtual Desktop.
Resolution
Caution : Agilent...
This Information Applies To: Agilent AriaMx real-time PCR system, AriaMx real-time PCR optical modules
Issue
Users may observe an unexpected fluorescence signal in the CY3 channel when using the fluorophore HEX or JOE. This issue can lead to misinterpretation...
This Information Applies To: Agilent AriaMx real-time PCR system
Issue
When configuring a plate setup in the AriaMx software, it is crucial to ensure that the selected dyes correspond to the optical modules installed in the instrument.
Background...
This Information Applies To: Agilent LC Systems with DAD (diode array detector)
Issue
The detector settings may change the quality of the data results. This article discusses the influence of DAD acquisition method settings for Agilent diode array...
This Information Applies To: Agilent OpenLab CDS
Issue
This article outlines a basic workflow from loading raw data to generating a report in OpenLab CDS Data Analysis.
Steps to Follow
Load data
Analyze or process data
Review data
...
This Information Applies To: 7890 or 8890/8860 GCs with a split/splitless inlet, MMI, PTV inlet, or volatile interface inlet.
Issue
Check the split vent trap line for contamination or an abnormal restriction causing high inlet pressure.
Items...
This Information Applies To: Agilent GC Systems
Issue
The GC carrier gas actual pressure exceeds its pressure setpoint.
Resolution
Split/splitless inlet, MMI inlet, PTV inlet, or volatiles interface
Check the split vent trap line for contamination...
Extracting Specific Absorbance Signal from 3D IsoPlot with OpenLab ChemStation
Multiple Results
This Information Applies To: Agilent OpenLab ChemStation
Issue
If the DAD full spectrum was saved during the run, it is possible to extract a signal at a different wavelength from the originally acquired in the acquisition method. This article describes...
This Information Applies To: Agilent 1260 Infinity and 1260 Infinity II ELSD (G4260B)
Issue
When facing issues in the ELSD like broad peaks, or high pressure, it is important to identify its origin.
This information will help you to solve the...