I went back and installed a no-hole ferrule and get a passing air/water check (I assume this rules out the MS interface), but when installing a column to the MS interface with the other end capped, the air/water check fails.
Otis,
This is the reply from Engineering:
the connection refused error indicates that the A-Plus server is not reachable, this can happen for two reasons:
The server has gone into error, in this case it is possible to launch A-plus from a dos…
Hello, I am looking for some advice on how to troubleshoot a small air leak in a 7010 triple quad. The leak is small enough that using an an air can at several of the check points can't detect a leak. So far I changed the side plate o-rings, vent valve…
Instrument: 7890 GC modified for gas injection with a 10-port valco valve. It's dual SS inlet, dual detector FID/TCD.
I have installed some components into the AUX bracket, two heating components into AUX 1 and AUX 2, and a valve actuator in V1. Valve…
In the ChemStation calibration table you can set Peak Qualifiers when using multiple signals. The ratio of the signals is calculated and compared for each compound. In the classic report this is then used also for peak identification. I tried building…
We are using EZChrom and two separate samples, so as to increase throughput and to limit solvent use. 7890A/7683/7683 ALS with dual FID. Thanks, Charles
I’m having problems with my injector. It will move up and down to the seat with no problem but will throw an error and not move down to a sample vial. Errors “Command from COSY list rejected (EE 4080,3061)” “Needle down failed (EE 4018, 16)” Also if you…
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…
We have been using an Agilent 7890B GC-MS with FID TCD equipped with an autosampler (ALS) for analysing liquid hydrocarbon samples. I would like to analyse gaseous samples of CO, CO2 and H2 in the future. Is it possible to manually inject gas samples…
This Information Applies To: Agilent GC Systems with Flame Ionization Detector (FID)
Issue:
The Flame Ionization Detector (FID) jet could become clogged with ferrule material, column bleed, or heavy molecular analytes. The clogged jet will affect...
This Information Applies To: Agilent GC Systems with Split/Splitless (S/SL) inlet
Issue
Different liners are required for different high concentration, split analysis techniques including:
General use liners
Auto inject, general use
Auto...
This Information Applies To: Agilent GC Systems with Split/Splitless (S/SL) inlet
Issue
Different liners are required for different splitless trace analysis techniques including:
General use liners
Pressure, temperature, volume (PTV)
Hot...
This Information Applies To: Agilent 6890, 7890, 7820, 8890 and 8860 GC Systems with Split/Splitless (S/SL) inlet
Issue
Replacement of the Gold Seal is required as part of inlet maintenance. Replacement is required when the performance of the inlet...
This Information Applies To: Agilent GC Systems with Micro-ECD.
Issue
The Wipe Test is an annual test that performed by end user of the micro-ECD (Micro Electron Capture Detector or uECD) to help ensure radioactive safety when using the detector...
This Information Applies To: Agilent GC Systems with thermal conductivity detector (TCD)
Issue
Baking the thermal conductivity detector (TCD) at high temperatures can remove sample contaminants that have deposited on the detector surfaces.
Items...
This Information Applies To: Agilent GC Systems with flame ionization detector (FID)
Issue
Baking out the flame ionization detector at high temperatures can remove sample contaminants that have deposited on the detector surfaces.
Items required...
This Information Applies To: Micro Electron Capture Detector (uECD)
Issue
Baking the micro electron capture detector (µECD) at high temperatures can remove sample contaminants that have deposited on the detector surfaces.
Warning ...
This Information Applies To: Agilent GC Systems with Flame Ionization Detector (FID)
Issue
This article will describe how an operator can configure the makeup gas on both the instrument keypad and the software driver (Method Editor).
Background...
This Information Applies To: Agilent HPLC systems
Issue
The presence of ghost peaks can be a symptom of a system contamination issue, caused by accumulation of sample and/or foreign substances in the flow path. It is critical for high sensitivity...