I'm trying to develop a method for ethanol via headspace. I am using Restek standard Residual Solvents #1 (34105) for the curve. My instrument is Agilent 6890 GC-FID with CTC PAL COMBI autosampler for headspace.
I ran residual solvent curve at high…
Good Morning, Just setup a 7890B GC with Empower 3 for the CDS Built an instrument method to use both the front and back injection ports. I have a 6890N with front and back FID that we run a lot of samples on so this isn't a new method development. +…
Hi All, I need help to fix either baseline drifted down or change volume injection of water samples in GC/FID. Specifically, I am setting up a new GC instrument for analysis of methanol and alcohols in water samples with the following conditions: - Instrument…
I am running GC 6890 (FID detector) alongside G1888 headspace.
I had noticed 4 of my later eluting peaks got increasingly worse in terms of shape and reproducibility. After running blanks (no injection and also blank vials), it seemed like the cause…
Hi I have a very basic question, please correct me if I am wrong. I am using GC 7820 with FID detector. Flow , Pressure everything was set by another technician before I started. I know for Back Detector everything is what is set by the Technician in…
In my experience, usually when a method fails to download to a 7820A GC it means that one of the zones on the GC is in a faulted state. This does not always get reported in the instrument actuals in ChemStation, so the best way to double-check this is…
It looks like it is having to clear something out the inlet, column, detector or head space as the baseline rise is over most of it. I see it's a FID you are using, how long do you leave it ignited before running the first analysis?
Anyone have experience with a 7890B causing abnormal signal attenuation and more signal noise than normal? The attenuation problem - the detector's AIB signal has a maximum signal of ~ 69,000 uV however the signal now tops out at ~30,000 uV in the ChemStation…
It is a capillary, USP 401 The gas chromatograph is equipped with a flame-ionization detector, maintained at a temperature of about 260°, a splitless injection system, and a 0.53-mm × 30-m fused-silica capillary column bonded with a 1.0-µm layer of phase…
Hi I have noticed something different this morning. I did a black run without injection( after I changed the inlet and septum) using my method(same method) continuously for three times. All the three times I am getting different chromatogram, as seen…
This Information Applies To: Agilent ICP Expert software.
Issue
The software version is often asked and is a valuable information: to see if any updates are needed, if certain options are available etc.
Steps to Follow
Launch ICP Expert...
This Information Applies To: Agilent OpenLab CDS
Issue
This article provides step-by-step instructions to calculate peak-to-valley ratio in OpenLab CDS.
Background
The peak-to-valley ratio is calculated to indicate the quality of peak separation...
This Information Applies To: Agilent 6500 Series Q-TOF LC/MS systems, MassHunter Workstation 10.1 or below and MassHunter Workstation 11.0 .
Issue
Fully reset the Q-TOF LC/MS system via a power cycle without venting. For users who experience slow...
This Information Applies To: Agilent 5200/5300/5400 Fragment Analyzer, Femto Pulse, ZAG DNA Analyzer, and Oligo Pro II systems
Issue
The volume of sample used by Agilent parallel capillary electrophoresis systems during a run.
Resolution
The...
This Information Applies To: Agilent 2100 Expert software, 2100 Expert Security Pack, 2100 Bioanalyzer
Issue
When opening the 2100 Expert software and using the Security Pack, the error message " Start of launcher application failed - The requested...
This Information Applies To: Agilent 6890, 6850, 7890, 8890, 8860, Intuvo 9000 GC systems.
Issue
The exchange of the ignitor in a Flame Photometric Detector (FPD) may be required in the following scenarios:
Preventive or periodic maintenance...
This Information Applies To: Agilent 1290 Infinity Quaternary Pump G4204A, 1290 Infinity II Flexible Pumps G7104A/C, and G7131A/C.
Issue
If the flexible/quaternary pump does not generate flow or build up pressure, it could be due to a stuck inlet...
This Information Applies To: Agilent 5200, 5300 and 5400 Fragment Analyzer systems
Issue
Separation times for the Fragment Analyzer for each array format and kit.
Resolution
Caution : The times in this article are the length of time...
This Information Applies To: Agilent 5200/5300/5400 Fragment Analyzer, Femto Pulse, ZAG DNA Analyzer, Oligo Pro II, ProteoAnalyzer systems
Issue
Guidance for installing the Agilent parallel capillary electrophoresis instrument controller and/or...
This Information Applies To: OpenLab CDS (version 2.x) system
Issue:
This article explains how to export OpenLab CDS 2.x data as Archived file.
For copying OpenLab CDS 2.x data to another Projects or another OpenLab CDS systems, you can use data...