Hello Guys, I am using Agilent 7890a GC with an FID detector. I using this GC in online mode to analyze reactor exit gases. I am currently studying the dehydrogenation of Methylcyclohexane over Pt catalyst. Recently I noticed that the FID response is…
Hi All,
I have an Agilent 7700 ICP-MS running MassHunter 4.6. Interesting issue - the instrument tunes just fine but when I go to run a sample, the data acquisition never stops; it continues well past the time it should have taken including rinse program…
Thank you very much for your quick attention. I take advice to use Labadvisor, however, the host computer is a windows 7 system and the built-in net framework is NE3.5, but LabAdvisor downloaded from Agilent site needs Net Framework version 4.7.2 , which…
I am new to GC. I am trying to make a calibration table for a set of fatty acid standards using Agilent 8860 (GC-FID)
After the derivitization step, analysis of the resulting methyl esters shows only the solvent peak. Usually a very high solvent peak…
Hello,
Does anyone know were the signal data for the live signal displayed in the online signal window is stored and/or how to access it in Chemstation Rev.B.04.03[16]? I would like to write a macro to run in the scheduler to periodically grab a live…
This is absolutely the wrong column. Ammonia and H2S need apolar thick films to be separated and no specialized Free-Fatty-Acid-Phase (FFAP). A CP-Volamines column would do (CP7448) . Ammonia elutes just after CO2 and before water, H2S after water at…
Hi All,
We have a 5977 MSD which came up with two errors following a site power outage:
"Source Heater Error: Timeout - temperature fails to increase under full power." "Analyser Heater Error: Timeout - temperature fails to increase under full power…
First off, it is not the barcode reading that causes the vial leaking, but my best guess is that the barcode reading introduces a variable time, that then can cause a scheduling conflict. This scheduling conflict is then not handled, and the 7697A is…
We have a GC-MA7890B with an FID detector and I are observing spikes in the baseline after we made a couple of changes.
We installed guard columns with unions on inlet and detector side, added a 2nd gas cylinder and required tubing, cleaned the FID…
Hi everyone I have a strange issue to report. We are using a 6890GC with FID and TCD that was upgraded many years ago to give use LAN communication rather than GPIB. It works great even though it is over 20 years old. Just prior to Christmas we installed…
This Information Applies To: 1100, 1200 and 1260 Infinity I and 1260 Infinity II LC Pumps (Excluding preparative pumps with electromagnetic purge valve (EMPV): G1361A. Not applicable to any of the 1290 Infinity II modules with automatic purge valve: G4220X...
This Information Applies To: Agilent 1260 Infinity G1315x DAD or G1365x MWD Modules
Issue:
Removing and re-installing Visible and UV lamps in Agilent 1260 Infinity G1315x DAD or G1365x MWD Modules.
Both the visible and UV lamps are consumable...
This Information Applies To: Agilent 1260 Infinity Binary, Quaternary or Isocratic Pumps.
Issue:
Removal of the pump head from the pump metering drive for maintenance on an Agilent 1260 Infinity Binary, Quaternary or Isocratic Pump Module.
Steps...
This Information Applies To: All Agilent 1260 Infinity Binary, Quaternary, or Isocratic Pumps without the Seal Wash Option installed.
Issue:
Worn pump seals can shed small particles that can cause blockages and pressure issues downstream of the...
This Information Applies To: Agilent G7167x Multisampler modules
Issue:
Required when:
The needle seat is visibly damaged, blocked, or is leaking.
Leaks or blockages in the Vialsampler are observed, especially between the needle and needle...
This Information Applies To: Agilent 1260 Isocratic (G1310B) Quaternary (G1311B) Pumps.
Issue
Required when:
The inlet valve is defective.
The pressure or leak test in Lab Advisor suggests the inlet valve may require replacement.
A large...
This Information Applies To: Agilent 1260 Isocratic (G1310B) quaternary (G1311B) pump modules
Issue:
Required when:
The outlet valve is defective or leaking.
The pressure or leak test in Lab Advisor suggests the outlet valve may require replacement...
This Information Applies To: Agilent 1260 Isocratic (G1310B) quaternary (G1311B) pump modules
Issue:
The seal wear in procedure is important as it acts to "bed-in" the seals to ensure a leak free and pressure-tight pump head.
Required when:...
This Information Applies To: Agilent G7167A/B Infinity II Multisamplers
Issue:
The Agilent Multisampler autoreferencing procedure uses predefined positions on the base plate and the sample hotel to calibrate the positioning of the needle parkstation...
This Information Applies To: Agilent 1260 Infinity Binary, Quaternary or Isocratic Pump Modules
Issue:
Reinstallation of the pump head on the pump metering drive during maintenance on an Agilent 1260 Infinity Binary, Quaternary or Isocratic Pump...