What could be causing the appearance of that ghost peak?
Analysis on a GTA120 240Z AA
The peak on the left is the peak of interest; the peak on the right is the ghost peak
Analyzing Lead in Blood, I get a graph like the previous one and I have…
Hi,
I am having trouble with carryover peaks in baseline in my 7890B GC with micro-ECD detector. To be specific, the baseline shows kind of a s-shaped just right before our peak of interest begins to appear which interferes with the peak shape.
A…
Hello Marty,
We decided to re-install Chemstation software on a newer Dell Optiplex computer. This worked! So we are back in business! Our LC is now allowing all lab analysts to log back into Chemstation after it times out from inactivity.
Thank you…
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Good day. What is the best way of protection сystine during acid hydrolysis? I have used the most of preservatives such as: citric acid, phenol. decrease hydrolysis time. No one mentioned above give results. Also I am interested in tryptophan sample …
In that acqmeth.txt file...the column flow setpoints for both columns are set to "Off" ? Please make sure that both are checked ON and save the method.
They don't say the control type - Constant Flow is typical. What version of MassHunter Acquisition…
Hello,
The newer CDS 2.x software does not have that ability to run partial sequences into the same result set as Chemstation did in the past. Also, the new software does not have a single online session per instrument. If a second users needs to…
This Information Applies To: Agilent OpenLab CDS (version 2.x)
Contents:
In the following procedure, you will find steps to create a multipoint ESTD calibration method with OpenLab CDS 2.X.
Steps to follow:
1. Load the Data
a. From Data...
This Information Applies To: Agilent MassHunter Quantitative Analysis Software
Issue
Chromatographic peak integration is a critical part of accurate and reproducible quantitative data analysis. The integrator type and the integration parameters...
This Information Applies To: Agilent 6200/6400/6500 Series LC/MS Systems
Issue
Instructions on how to fill the calibrant bottle on 6200/6400/6500 Series LC/MS Instruments when calibrant levels are running low.
Background
The ability to autotune...
This Information Applies To: All Agilent 6000 Series LC/MS Systems without a gate valve for ion capillary installation/removal.
Issue:
Installing the Ion Transfer Capillary after cleaning or replacement. For instructions for installing an ion capillary...
This Information Applies To: AriaMx Real-time PCR System
Issue
The saturation level is unique for each optical module after the offset of calibration factor and background calibration. The FAM, ROX, HEX, CY3 & CY5 optical modules will saturate at...
This Information Applies To: Agilent LC Systems
Issue
While it is possible to combine modules from different HPLC series such as 1100, 1200, 1260 or 1290 series to create a functioning LC system, there are some important topics to consider.
...
Fixes for the "RPC Server Unavailable" Error
Multiple Results
This Information Applies To: Agilent OpenLab CDS
Issue
When launching the instrument Acquisition screen/instrument session, there is an "RPC Server Unavailable" error.
Resolution
Accessing the Services App (Windows)
There are two ways to...
This Information Applies To: Agilent LC Pumps
Issue
If a user suspects that the gradient composition isn’t accurate and causes poor chromatography such as retention time shifts, late, early, no peaks or merging peaks. This article provides a quick...
This Information Applies To: Agilent 1290 Infinity (G4226A) and Agilent 1260 Infinity (G1367E) HiP Autosampler
Issue
Replacing the Needle Seat of the Autosampler is required when:
The needle seat is visibly damaged.
Leaks or blockages in the...
This Information Applies To: Agilent OpenLab CDS
Issue
This article discusses different types of bracketing modes and how to set up a bracketed calibration in Data Analysis for OpenLab CDS 2.x
Background
Occasionally, the instrument conditions...