When performing the Eukariote Total RNA test on the same chip we had some samples with very degraded RNA and one sample with what seems like good quality RNA but the software failed to give a RIN value for that sample. Is there a way to still measure…
Since the FID and TCD are in series, I would guess that the extra noise on the peak through the FID is due to the TCD valve switching between carrier and reference. Try setting the FID signal rate to 5 Hz. Also, the FID makeup flow can be reduced or turned…
Carbon disulfide is another option for wash solvent when running naphtha or crude oil samples. It's response on FID is low compared to hydrocarbons, so there should be little to no response if some residual is in the syringe.
Hello AGILENT family,
i have a few questions on the analysis of Pb in blood samples.
am failing to get the right concentrations of the QC sample 8ppb instead it’s reading 0.08 ppb and at the same time it’s also showing overange (0.08o) even when my…
There's a lot going on. You have Column 1 in Constant Flow to a PSD in Constant Pressure with PSD Purge at 0 ml/min. Is there a purged splitter plate installed or a Purged Ultimate Union? The flow into the MS changes throughout the run due to the PSD…
This problem occurred after updating Openlab CDS Software 2.2 Version to 2.4 Version. GC# 7890B With FID , and TCD Detectors With OpenLab CDS Software 2.4 After installing the software version 2.4 and after a gas sample injection I noticed that there…
Dear Colleagues,
I have GC-FID 8890 and i'm using Gas saver feature but I'm observing when I change time of gas saver , the retention time is changed.
for instance, I set gas saver at 20 ml/min after 2 min then inject methanol and the RT is 4.74 but…
Ah, and I think the issue has to do with that I have 2 autosamplers, and 3 columns (MS at back, and 2 different FID columns at front using a 2way splitter). So the MS signal is in the subsequent folder, the FID1 signal is in the correct folder, and FID2…
I am a user of an Agilent 7900 ICP-MS. It has been working fine since last month, but today (Oct 13, 2022) the software was not able to connect to the instrument. When I try to connect the MassHunter software to the ICPMS by going to settings > mainframe…
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
How to power on the Agilent ICP-MS Foreline Pump when fully powering on the Agilent ICP-MS System, or after performing maintenance.
Background
The ICP...
This Information Applies To: Agilent ICP-MS MassHunter Software version 5.1 and above
Issue
The user manuals for Agilent ICP-MS Systems for MassHunter 5.1 and above are included in the ICP-MS MassHunter Help and Learning Center. There are manuals...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
Elevated oxide ratio values are defined as greater than 1.5% for x-lens configuration or greater than 3% for s-lens configuration. Possible causes are contamination...
This Information Applies To: Agilent GC/MS Systems
Issue
The software version is a valuable information usually required for troubleshooting, software updates preparation or to check installed options.
Table of contents
MassHunter GC/MS Acquisition...
This Information Applies To: Agilent LC modules with RFID tag readers
Issue
Agilent uses RFID (radio frequency identification tag) tag readers in some HPLC components such as detector lamps and flow cells, pump heads, purge valve and mixers. However...
This Information Applies To: Agilent LC systems with Lab Advisor software.
Issue
In Lab Advisor, the Logs and Results register is available for gathering history and additional information on the system. It presents data collected from the configured...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
What information does the ICP-MS instrument status indicator provide?
Background
The ICP-MS Instrument Status Indicator on the instrument, and in the...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
How to power off Agilent ICP-MS systems before maintenance, for long-term shutdown, or for power cycling the instrument. Power cycling may be required when...
This Information Applies To: Agilent OpenLab CDS
Issue
Steps to close an instrument connection to a primary instrument controller, to start a successful connection to a secondary instrument controller, or to configure the instrument.
Background...
This Information Applies To: Agilent HES source, Agilent 5977 Series GC/MSD
Issue:
During normal operation of the GC/MSD, the ion source will need to be disassembled to proceed with abrasive ion source cleaning and / or replacement of consumable...