I'm going to be calibrating for ethanol on my HS-GC-FID 6890, but I'm having discrepancies between two standards. The standard that I will be calibrating with (Restek's Residual Solvents #1 34105) is 3000ug/mL in N,N-Dimethylacetamide. I'm verifying the…
Hello from Kazakhstan,
Very interesting theme.
I also have some issues with flow method correction and some questions.
1) We use Excel CFT calculator. So how much pressure we should put on calculator, when using SCD detector with FID? As calculator…
What you describe with the washes happening, but a delay when pulling up the actual sample for injection sounds like something about the GC is not in a ready state and the GC is waiting for a part of the GC to become ready. In this case you describe it…
Hydrogen (H2) is the simplest and most abundant element in the universe. Since, it only occurs naturally on Earth when combined with other elements it must be produced from other sources. It can be produced without a carbon footprint from variety of sources…
Thank you for your advice. Unfortunally not only EM test failed but several others as well. we tried to run it last,first, and even not to run it at all
Yes, the MassHunter software uses a conversion factor and reports in "counts" instead of hertz for uECD data. The conversion factor is 7680.
The 7680 multiplier also applies to other GC based detectors such as FIDs and TCDs.
Hi,
We are using MassHunter 10.0.368 to collect data on a GC-FID (7890B). The software will randomly crash (the software shuts down with no information in the logbook) during a sequence, usually after 100+ samples. We have updated MassHunter to version…
Hi
I am pretty new to GCMS, so may need extra details on how to do things you suggest
I attached a picture of the set up of our gc system, so I can explain better. We recently installed a guard column using 30 cm piece of FS Deactivated 0.250 mm(Agilent…
When you say that there are no signs of a leak, have you run a pump leak rate test using Agilent Lab Advisor? If not, I would suggest testing this. If you're unlucky enough for your peak to elute just at the point when the outlet ball valve fails to close…
Hello !
I interesting gc8890 and gc7890.
In datasheet the gc 7890 writing about posible instal 3 detector maximum, but in datasheet gc 8890 writing about posible 4 detector. I never see 4 detectors are installed simultaneously on one chromatograph…
This Information Applies To: Agilent 6000 series LC/MS instruments
Issue:
Cleaning the ion transfer capillary as part of regular maintenance or as part of troubleshooting when a loss of sensitivity in the instrument occurs.
Steps to follow ...
This Information Applies To: Agilent 6000 Series LC/MS systems.
Issue
Efficient electrospray ionization (ESI) in your LC/MS ion source requires a properly adjusted nebulizer needle in good condition. The nebulizer needle is a consumable item in...
This Information Applies To: Agilent 6000 Series LC/MS systems.
Issue
Checking and adjusting the nebulizer needle is part of regular maintenance or troubleshooting tasks. It is suggested when there is an issue with nebulizer spray shape or spray...
This Information Applies To: Agilent Single Quadrupole LC/MS systems controlled by OpenLab CDS software
Issue
How to check and recognize the current Instrument Status of your 6100 Series and InfinityLab LC/MS systems using OpenLab CDS software....
This Information Applies To: Agilent LC/MS Systems
Issue
Contamination of the tune mix or the Calibrant Delivery System (CDS) of your LC/MS system can cause Autotune failures and drops in sensitivity due to ion suppression.
Items Required...
This Information Applies To: Agilent LC/MS Systems
Issue
When there is suspected contamination of the CDS, low tune response, or possible blockage in the CDS, flushing the Calibrant system may be required.
Warning : This procedure risks...
This Information Applies To: Agilent LC/MS System
Issue
Instructions on how to check the level of calibrant in your LC/MS system, and refill the calibrant bottle if necessary.
Requirements
Checking the level of calibrant should be performed...
This Information Applies To: Agilent 6100 Series LC/MS Instruments
Issue
Instructions on how to fill the calibrant bottle in Agilent 6100 Series LC/MS Instruments when calibrant levels are running low.
Background
The ability to autotune your...
This Information Applies To: Agilent 6000 Series LC/MS systems
Issue
The article details the correct tuning mix to use according to your LC/MS system and the source type installed on your system. In cases where Agilent tuning mixes need to be diluted...
This Information Applies To: Agilent 7693A, 7650A, and 7683 Series automated liquid samplers
Issue
GC software or GC LED display shows ALS Failure code 245: Autosampler front tower plunger error or ALS Failure Code 945: Auto injector back tower...