Sounds good. Just wanted to double check why it was not working. I had a noise and drift test fail before on LabAdvisor and it was due to a test not functioning properly. The Leak test and Pressure test both passed and system has been working fine. Thanks…
Do you have the Polyboost on? If not, the wavelengths below 190nm will fail. It would be good to know which wavelengths are failing. On the wavecal tab, click "Store dark current" and see where the wavelength calibration file is being saved. Then using…
Hello community, I set up an Agilent 6890 (Software: ChemStation A08.03). A few seconds after I start the GC, the error message "Shutdown ( # 6 ): Back Inlet Flow Shutdown" is shown on the display. The settings of the Back Inlet shows that the pressure…
Hi all We are using GC6890N in our lab to analyze dry gas, the GC with TCD and FID and four columns Two weeks ago We noticed something strange in the results like a cycle. N2 value it goes up and then goes back down. Is there any advice to solve this…
Hello everyone!
Which one do you prefer in 2019, Openlab CDS Chemstation edition or Openlab CDS-2 and why, some standard list of pros and cons maybe?
The 7890B instrument has 2 FIDs, two capillary columns in the same oven, each column connected to…
Hi,
I'm having some persistent calibration issues for an ICP-OES analyzing Al, Ca, Fe, K, Na, Ni, P, Si, V & Zn in the range of 0.05 - 1 ug/mL.
The following lines (Al 237.312, Si 185.005 and Na 589.592 nm) keep failing the calibrations due to lowered…
Can anyone explain the negative dips in the MS TIC and why they are perfectly aligned with the spikes in the FID? Is there any troubleshooting that I can do to relieve this problem? thank you
7890 GC with 5977A MS (inert source)
Mass hunter B.07…
When running hydrogen carrier your source should not need as much physical cleaning (compared to helium carrier) because the H2 has a scrubbing effect. So far I've been told that there is no physical cleaning on the HydroInert source as it could damage…
Hi Lars, I would add an input from my experience that H2 carrier gas may cause some chemical reactions on some specific polar columns and compounds. Two scenarios I have encountered were (1) analysis of C4-C5 olefins on an AL2O3 PLOT column where some…
This Information Applies To: Agilent 6820, 6890, 7820A GC systems with a Split/Splitless (SSL) inlet
Issue
Non-volatile sample matrix components will accumulate in the inlet liner and impact on analytical performance. The inlet liner should be changed...
This Information Applies To: Agilent headspace samplers (HS)
Issue
GC cycle time needs to be calculated correctly. Too short a GC cycle time will reduce sample quality and possibly stop the analysis prematurely. Too long GC cycle time can cause...
This Information Applies To: Agilent 7820A GC
Issue
7820A GC is designed with simplified keypad that comes with five buttons. They are Stop, Prep Run , Start, Up and Down arrow buttons. Changing the IP address requires a different method compared...
This Information Applies To: Agilent Single Needle Autosamplers
Background
Sometimes the user may observe liquid flowing from Port four on the autosampler injection valve. During an injection sequence, it is normal to have liquid from port four...
This Information Applies To: Agilent 4200, 4150, 2200 TapeStation systems
Issue
Can I run an assay using the ladder or sample buffer from a different assay if I have run out of the appropriate assay ladder or sample buffer? Is it possible to run...
This Information Applies To: Agilent ICP-MS 7700, 7800, 7850, 7900, 8800, and 8900 systems
Issue
Peristaltic pump tubing that has lost its elasticity will not deliver the sample to the nebulizer correctly. When the pump tubing appears limp or flattened...
This Information Applies To: Agilent AriaMx real-time PCR system
Issue
AriaMx touch screen displays error code 90 after the Instrument Health Check (IHC), which happens when the AriaMx is switched on, or after running the onboard diagnostic tests...
This Information Applies To: Agilent AriaMx real-time PCR system, AriaMx optical modules
Issue
AriaMx users can change which AriaMx optical modules are installed to upgrade the instrument capabilities or to troubleshoot.
Items Required
Any...
This Information Applies To: AriaMx real-time PCR system
Issue
Error 43 is displayed on the AriaMx touch screen. Error 43 is a voltage error and it normally indicates that the cartridge LED voltage or motor voltage being detected is abnormal. Sometimes...
This Information Applies To: Agilent 2100 Bioanalyzer system
Issue
Can I run qPCR samples containing Sybr® Green I on the Bioanalyzer?
Background
Sybr® Green I is an Intercalating Dye commonly used to detect amplification products in real...