Turning off the systems on Friday night that need to be ready to go on Monday morning is not recommended. It can take quite some time for a GC/MS to come back up to operational after being shut down. Even cooling the temperatures all down and then heating…
Wondering if anyone has experience detecting acetic acid and formic acid using GC-FID HSS. I am trying to develop a method based on the limits described in USP <467> of 5000 ug/mL of each of the two solvents, but having a hard time seeing any peaks.
I have a gas-phase reactor system that uses the FID of a 7980A to analyze the product mixture. Currently, I have a pressure buildup (up to 30 psi - the carrier gas delivery pressure) when the system is stationary. When the gas sampling valve actuates…
Good morning,
We have an autosampler (Agilent G4567A) for our GC-FID (7820A) and the following method for cleaning and injecting samples.
I have noticed that when the syringe pumps 2µL of sample for cleaning, it then pumps quite a large volume of…
Hi,
After a power cut, the batch file I had open on my desktop seems to have become damaged...
On opening the batch, it fails to open... small dialogue pops up >> "failed to open quick scan file. Failed to read binary quick scan file."
Has anyone…
hi community we are developing a method on short chain fatty acids in plasma sample, using a DB fatwax UI column on GC-FID. we are using diethyl ether as extraction solvent however our recovery of patient samples are not so good and looking to use Isoproponol…
I have a 6890N GC with an MSD and a GC that I am trying to qualify. The MSD works fine but when it comes to the FID the units are showing as mAU and not PA so it will not pass the validation test. Does anyone have any idea on how we can change the units…
Hi, I know this is an old thread, but I am having a very similar issue. I am wondering how did you know to replace the interconnect spring rod? How did you know this was the issue, and that it was not instead an issue with the FID board or the electrometer…
I have a 6890N GC with dual FID. The back column has a much higher flow rate than the front column. The two columns are identical and the setup for inlet, column and detector are identical. I have also swapped the EPC's between the two detectors. Seems…
We don't know what is in your water samples, but on a CP-Wax 57 CB benzene and isopropanol are eluting very close to ethanol, just in front of it.
You can find examples of applications of alcoholic beverages on Wax 57 (all types) in Scanview ( (+) Software…
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...
This Information Applies To: TapeStation ScreenTapes and reagents
Issue
Using the search tool on Agilent.com to locate the declarations of conformity (DOC) for Agilent ScreenTapes and Test-Tapes, certificates of conformity (COC) for TapeStation...
This Information Applies To: Agilent 7693A Automatic Liquid Sampler
Issue:
The Automatic Liquid Sampler (ALS) system calibration process aligns the sample tray with the injector turret position to enable vial transfers without incident.
Calibration...