Andy G. had the excellent suggestion to decrease draw speed and wait time, since we are working with methanol extract. So we halved the draw speed from 100ul/min to 50ul/min and increased the wait time from 2 to 3 seconds. For now, this seems to have…
Hi guys, when I tried to run my sequence in GC-FID, the workstation showed "front injectors not detected", and under my method, the configuration showed no injectors. However, the parameters I entered for injection could be found in the GC (7890A) operation…
Hi everyone
In my company recently we update the Openlab Ezchrom to CDS 2,5.
We have a GC 7820A and when we analyzed Residual dissolvents we have a trouble because between 3 to 5 minutes the detector (FID) get shutdown and this signal of shutdown…
Hi Abdul,
From the picture, it appears your FID flame was extinguished. You can put a metal wrench or a mirror at the top of the detector to see if the exhaust contains moisture from the combustion, but a flat baseline at zero output usually means the…
This instrument is used mostly for FID analyses and the second injector is not working. That's the primary reason why the column will be disconnected most of the time. Also to reduce contamination of the ECD, but it sounds like that isn't a huge concern…
Good Day.
I have an issue to my result in tcd. My Sample is TOGA using Fid and tcd. now the issue is the detection of H2, N2 and O2 are late. before 4.2 min. now its 6.2. the column is new.
Thank you for the reply, I will have a go at it tomorrow. So essentially I just need to change one of my internal standard compounds to a normal compound, and use that as a single point calibration? It just seemed logical that every internal standard…
We need to use air generator for 8 GCs with FID Detector. Each FID uses 350 mL/min air. So for 8 FID, 2.8L air will be sufficient? Is it ok to go for an air generator that supply 3L of air/min or we need to go for a higher option? Kindly advise
In an official Service Note we say "According to our lamp manufacturers there is no shelf life for LC detector deuterium (D2) lamps. Our logistic centers (LC) try to ship lamps from stock before they reach 12 months age. We see the lamps lasting for more…
What version of Windows do is it running? Go to the cell next to the logo (Type here to search) and enter winver and select the run app. At top it should say Windows 10, at this time only MassHunter 5.2 is Win11 compatible. 2 lines below Windows 10 will…
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...