GC Inlet Maintenance
Find links and part numbers to the consumables used in the video here.
GC Septum
Inlet septa are used to maintain a leak-free seal at the GC inlet, even after repeated injections.
If the septum has a dimple, the dimple…
Thank you for all your suggestions, this is what I have done so far, With computer disconnected from our Network (to eliminate firewall issues, as per recommended by or IS/IT department): Both instruments connected through hub - failed Only 6850 connected…
I am new to Agilent forum, We got a new GC 7820 with FID detector. I am using Open Lab CDS chemstation Ver 2.2, if you upload video turorials for this version that would be really helpful. For your information I got about e familiarisation disk, but I…
Hi, Thanks a lot for your great help. However, how to use "Import worklist" function to import entries into the user defined " Amt. and Tot. Amt. " column? Other info are import succesfully except the two ones. I tired " Amt.","Tot. Amt. " in the importing…
Hello Guys, I am using Agilent 7890a GC with an FID detector. Last week I saw that there are few ghost peaks in my chromatogram, so I decided to bakeout the column. After baking the ghost peaks disappeared but now I see and increase in the peak towards…
Hi, There are so many open questions, that i would ask you to run thorugh the "Troubleshooting Tool". It´s an guided pdf, which helps to identify the problem. The last performance report looks quite well, also the torch axis and the em tuning run without…
Hi galderson,
that's a typical "it depends" answer. For the carrier gas line I assume you use at least a 5.5 or even 6.0 gas quality? Anyway depending on the gas quality there are different concentrations of impurities:
Now you need to…
I have GC-7890B -TCD -FID . I want to maintain the flow of gas sample to be same as calibration gas flow . Are there any option in GC to give same flow of sample and calibration gas or shall i use flow meter at the outlet of GC .
Thank you for your help, Paul. I'm not sure what happened on October 27. Many people use this system.
This morning, the system passed the Tune Evaluation, but the HiVac is still off. I looked at the Manual Tune task box, but do not see where I have…
Thank you James, The software that we have, runs in a very old HP computer with Windows 2000 PRO. The equipment´s software only runs in this computer and it has had many fails lately. For it reason, we would like to buy an updated software that it can…
This Information Applies To: Agilent Liquid Chromatography (LC) systems
Issue:
Shutting down the HPLC for a long period requires following this general procedure to prevent damage to the system and the column.
Steps to follow:
Store the...
This Information Applies To: Agilent G7129A/B Autosampler with Sample Thermostat/Cooler G7167-60101 or G7167-60005.
Issue:
The autosampler may stop working from time to time, potentially giving off loud noises and switching off the light. The only...
This Information Applies To: Agilent 5977A/B GC/MSD with EI source, EI Extractor Source, or CI Source.
Issue:
During normal operation of the GC/MSD, the source will require cleaning. It is time to clean the source when:
There is a loss in analyte...
This Information Applies To: Agilent HES source, Agilent 5977 Series GC/MSD
Issue:
During normal operation of the GC/MSD, the source will require cleaning. It is time to clean the source when:
There is a loss in analyte response not improving...
This Information Applies To: Agilent 5977 and 5975 Series GC/MSD systems
Issue
The autotune fails and reports the error Tune action stopped: Gain and offset = 0 and peaks are too narrow!
Resolution
The MSD autotune program is run after routine...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
Condition new or cleaned ICP-MS skimmer cones and sampler cones by aspirating a Conditioning Solution before use.
Background
Drift up can be a sign of...
Turn On the GC/MS Interface and Oven Using OpenLab CDS
Multiple Results
This Information Applies To: Agilent GC/MS instruments controlled by OpenLab CDS software
Issue
Turning on the GC/MS interface heater and Oven using OpenLab CDS software.
Steps to Follow
From the Home tab, click Method > Instrument Setup...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900)
Issue
The signal monitor function in MassHunter can help with troubleshooting low sensitivity, carry over, contamination, or high background. It can also be used to optimize...
This Information Applies To: Agilent UV detectors (Variable Wavelength Detectors, Multiple Wavelength Detectors, and Diode Array Detectors)
Issue
Checking accumulated hours on the UV lamp.
Steps to Follow
There are four ways to check the accumulated...
This Information Applies To: Agilent 7700/7800/7850/7900/8800/8900 ICP-MS
Issue:
Poor internal standard (ISTD) mixing can cause high relative standard deviation (RSD).
The recommendations in this article are applicable if:
It takes a long...