Hi, the peak area has no influence on the calculation of Mw when measuring with concentration detectors only (RI, UV, ELSD e.g.). When performing Viscometry & Lightscattering measurements, the peak area is needed for the calculation. As an additional…
Occasionally the tune files get corrupted and you need to go back to an old one or start again from the default atune.u file. Glad the problem is resolved!
Part 1 included many questions and some answers about the maximum abundance that should be detected at the electron multiplier. Another important consideration is how much sample should go into the column.
See Which Electron Ionization Ion Source? Part…
Thank you for taking a moment to review the Community Guidelines. You agree to all of the guidelines posted and linked here when using the Agilent Community. These guidelines are here to help you be a valuable contributor to the community and make sure…
Hi, I have an old 6890 with a jet direct card. We lost power to the instrument and since then it has not been able to connect to the PC. I tried updating the bootp software with the correct mac address and power cycled instrument with the same issue.…
Support and educational resources for the Microplate Centrifuge and Automated Centrifuge Loader .
Automation Solutions Knowledge Base
Microplate-Handling Device Guides
PDF user guides
Support Documents
G5582A Centrifuge Installation Checklist…
-Have you tried a diferent column ? An old column could have retention time issues and peak distortion.. -Have you had any pressure fluctuations during your run ? Try running a Pump leak rate test, to see if the problem is not in the pump-head. -Do a…
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
The torch, bonnet, and platinum shield plate must be installed after performing maintenance, or replacing with new components.
Items Required
Standard...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
The torch, bonnet, and shield plate must be removed and inspected during routine maintenance, and when troubleshooting plasma ignition problems. Faults with...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
This procedure tests for an air leak in the sample introduction system, or fault with spray chamber draining, by sealing the end of the torch with a piece...
This Information Applies To: 7700, 7800, 7850, 7900 Agilent ICP-MS instruments
Issue
Error messages related to gas flows can cause the plasma to shut off or disable plasma ignition.
The troubleshooting procedure in this article is applicable for...
This Information Applies To: Agilent ICP-MS systems (7700/7800/7850/7900/8800/8900)
Issue
Error messages related to water flow or water valve issues can cause the plasma to shut off or disable plasma ignition. While a warning message will still...
This Information Applies To: Agilent Fluorescence Detectors (FLD)
Issue
Sometimes it’s necessary to change FLD EX and EM wavelengths during a run since not all components will excite or emit at the same wavelengths. However, when the wavelength...
This Information Applies To: Agilent Analytical Scale LC Systems
Issue
To troubleshoot high backpressure within an HPLC system, it’s necessary to understand the expected pressure throughout an operating system. The total pressure for an LC is measured...
This Information Applies To: Agilent LC Samplers except dual needle multisamplers
Issue
High pressure in the LC sampler is sometimes due to a clog in the needle seat assembly, the needle, or the sample loop. The needle can pick up sample particulates...
This Information Applies To: All OpenLab CDS ChemStation Edition software-Standalone Workstation
Issue
After launching OpenLab ChemStation Online, the following error is shown: “ChemStation ChemMain has stopped working” . OpenLab ChemStation Online...
This Information Applies To: Agilent AriaMx, Software version 1.8 and later
Issue
The Aria Warm up Feature was introduced with Aria SW/FW 1.8 to reduce baseline drift. The warm-up feature is used to speed up the heating process that would normally...