Good morning, everybody!
I am currently doing untargeted analysis using the Unknown analysis software. I could «identify» some compounds of interest, which is great. Now, my next step is to do a semi-quantification of my compounds using my internal…
Hello everybody,
I operate an Agilent 7890B-GC/5977A-MSD and a 7820A-GC-FID, both with autosampler.
Those systems are yearly maintained by Agilent.
So far, GC-MS is for qualitative analysis (compounds identification through library search for…
Good morning It turns out that this is the first time something so particular has happened to me with my GC-MSD (6850-5975). I work with MassHunter 10.0.368 and from one moment to another the signal for two of my work standards (organophosphates and phenols…
I looked at your plot again. That little bounce is barely 0.01pA -- so very tiny! This is down in the lowest possible signals that can be measured with an FID and honestly should not matter as your smallest peaks of interest should be at least 50x to…
After a failed methamphetamine quantitation, it was noticed that the methamphetamine peak shape on our GC/FID instruments has been consistently poor or deteriorating through out a run. This has been happening on both of our GC/FID instruments (all 3 columns…
We run a lot of our GCs with Polyarcs (methanizers) and FID responses can be theoretically calculated. While upgrading the software and importing chemstation methods, the calibration table did not get imported. If I could manually edit the calibration…
I am using an Agilent 6460 Triple Quad and have been dealing with a terribly low signal for the past few days, the signal appears at an abundance of 30 to 50 as a baseline only. I analyzed different compounds with different concentrations, the Tune mix…
I am trying to run a Injector Precision PV test using the conditions described in the software: caffeine standard (125 ug/mL) and HP ODS Hypersil 5 um, 125 x 4 mm part 7982618-564 . The method uses 85:15 Water:ACN mobile phase at 0.8 mL/min. The test…
Hello mkaadan ,
What I meant by a "low" failure rate (notice the quotation marks), is that it is likely not an indication of a leak, as that would result in a lot more samples failing, or potentially all of them. By no means I wanted to minimize the…
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
The torch, bonnet, and platinum shield plate must be installed after performing maintenance, or replacing with new components.
Items Required
Standard...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
The torch, bonnet, and shield plate must be removed and inspected during routine maintenance, and when troubleshooting plasma ignition problems. Faults with...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
This procedure tests for an air leak in the sample introduction system, or fault with spray chamber draining, by sealing the end of the torch with a piece...
This Information Applies To: 7700, 7800, 7850, 7900 Agilent ICP-MS instruments
Issue
Error messages related to gas flows can cause the plasma to shut off or disable plasma ignition.
The troubleshooting procedure in this article is applicable for...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
Error messages related to water flow or water valve issues can cause the plasma to shut off or disable plasma ignition. While a warning message will still...
This Information Applies To: Agilent Fluorescence Detectors (FLD)
Issue
Sometimes it’s necessary to change FLD EX and EM wavelengths during a run since not all components will excite or emit at the same wavelengths. However, when the wavelength...
This Information Applies To: Agilent Analytical Scale LC Systems
Issue
To troubleshoot high backpressure within an HPLC system, it’s necessary to understand the expected pressure throughout an operating system. The total pressure for an LC is measured...
This Information Applies To: Agilent LC Samplers except dual needle multisamplers
Issue
High pressure in the LC sampler is sometimes due to a clog in the needle seat assembly, the needle, or the sample loop. The needle can pick up sample particulates...
This Information Applies To: All OpenLab CDS ChemStation Edition software-Standalone Workstation
Issue
After launching OpenLab ChemStation Online, the following error is shown: “ChemStation ChemMain has stopped working” . OpenLab ChemStation Online...
This Information Applies To: Agilent AriaMx, Software version 1.8 and later
Issue
The Aria Warm up Feature was introduced with Aria SW/FW 1.8 to reduce baseline drift. The warm-up feature is used to speed up the heating process that would normally...