Hi everyone,
We are using a UV-VIS-NIR model Cary 5000. Recently when we validated the instrument. However, at the wavelength accuracy test using the Deuterium lamp, we found that 486 and 656.1 nm emission lines have been split into two emission lines…
Hello jeremy_lai ,
In your expressions you must check for both the existence of the qualifier and the outlier yourself. In the initial if and in the final one you need to add a check to see if there is a qualifier by checking to see if it is None. …
While running oils and extracts on GC,the basline shows wandering as in the attached photo below in the range from 75 to 100 mins.The problem is not related to specific temperature because it appears at the beginning of the run,middle and at the end in…
Hi Mohammad, Thanks for your thought, detector temperature is not extremely high or low. I did monitor temperature for FID and inlet the whole time even during the injection. It was stable and maintained for hours/days. Method that I was using I had checked…
Troubleshooting report generation in Chemstation. We have successfully generated 100s of reports using the report template and reprocessing when a run is disrupted. I have to sequences that have failed to run a report and I can't get it to via our usual…
Hello everyone,
I have a 8890 GC-FID that I've just started running.
I want to create a "shut down" method that turns off (or lowers) H2 and Air once a run is completed or that can uploaded at the end of the day. The goal here is to keep the instrument…
Hi guys, I'm experiencing regular times ghost peaks starting at 120°C to 295°C.....my setup is GC-FID 6890, Low pressure drop, Ultra Inert Liner with glass wool, column HP1 widebore..... I have cutted the inj/det 5 inches of column, heated at 295°C with…
The Signal-to-Noise function is better to work with printer, since there are more information on the print out than on screen, virtual printer will also do the job, When you started the function there will be guidance at the bottom of the window, it will…
We recently switched to MH 12.1 for our 6495C. This version of acquisition does not have tune context. Instead the autotune is in the TQ tab of the method.
When I request tune control, it does not change the TQ parameters. It only changes the temps…
We have a GCMS(5975C, intert EI source) which had been out of order since long 6 months due to ALS tray issue. After we installed tray, we cleaned ion source, replaced filaments, cleaned inlet, vent line and replaced split vent trap cartridge. Then tune…
This Information Applies To: HPLC Advisor app
Issue
The Agilent InfinityLab HPLC Advisor app is a cost-free mobile app for both Android and iOS.
It offers tools to save time with HPLC troubleshooting, method development, and more. Once installed...
This Information Applies To: Agilent 5977A/B GC/MSD with MassHunter GC/MS Acquisition Software
Issue:
This article describes the procedure to safely pump down (start) 5977A/B GC/MSD with Electron Ionization (EI)
Steps To follow:
Before you...
This Information Applies To: Agilent 5975 and 5977 series GC/MSD
Issue:
Tuning the Agilent GC/MSD with EI sources, requires the use of perfluorotributylamine (PFTBA). The calibration vial will be depleted eventually due to regular use. This article...
This Information Applies To: Agilent 5975 and 5977 series GC/MSD
Issue:
If the PFDTD signal is absent or low, but the reagent ions are normal, you may have run out of CI Calibrant.
Inspect the calibration vial on the back of the flow controller...
This Information Applies To: Agilent 5975 and 5977 Series GC/MSD
Issue:
For some GC/MSD maintenance or repair asks, it is required to open the side plate (filament exchange, ion source cleaning, electron multiplier exchange, column installation...
This Information Applies To: Agilent GC/MS MassHunter Acquisition Software Agilent 5975/5977 GC/MSD
Issue
Use the Early Maintenance Feedback (EMF) tool to track the GC/MSD's consumable resource and part use, and to configure alerts for when they...
This Information Applies To: Agilent GC/MSD systems
Issue:
After a filament fails, there will be a system error message: "No emission current". Switching to the other filament (except for the CI ion source, which has just one filament), and then...
This Information Applies To: Agilent 7693A automatic liquid sampler tray
Issue:
The orange Align Mode light comes on . T he sample tray of the Agilent automatic liquid sampler 7693A will not operate again until the alignment procedure has successfully...
This Information Applies To: Agilent 7693A Automatic Liquid Sampler
Issue:
The automatic liquid sampler may need to be replaced, in case it is worn or dirty.
Steps to follow
To remove the syringe:
Open the injector door.
Slide...
This Information Applies To: Agilent 7693A Automatic Liquid Sampler
Issue:
Two turrets are provided with the 7693A injector, the 16-sample standalone turret, and the 3-sample transfer turret used with the 150-sample tray (See Figure 1 ). The turret...