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What mobile phases can be used with the PFAS Free LC Kit?

I have a Exion LC AD fitted with the Exion LC AC PFAS kit – I’m looking into running another application on the instrument alongside PFAS analyses that uses 0.2% Formic Acid in H2O as one of the mobile phases. I can’t find any literature on whether the components in the kit are compatible with a formic acid solution as the mobile phase. Has anyone had experience running with this MP on this kit?

Guide decisions during cell line development with more information at the intact level

Guide decisions during cell line development with more information at the intact level

Monitoring product quality attributes (PQAs) throughout monoclonal antibody (mAb) development is vital to ensuring drug safety and efficacy. By adopting orthogonal analytical techniques and integrating new technologies that have the potential to provide more information, it is possible to improve product quality and manufacturing efficiency and make more informed decisions.

Loss the contact closure signal

Loss the contact closure signal

our 7600 couple with nanoLC Ultimate 3000 via contact closure. it has run without any loss connection during the batch. Just yesterday, the last injection keep equilibrating system until the LC finished the gradient run. We closed the software and power off LC and MS then started again but it did not help. The Dionex engineer also checked their LC and triggerring cable found both are ok.

What has the Echo® MS system done for the pharma industry? (And don’t just take our word for it!)

What has the Echo® MS system done for the pharma industry? (And don’t just take our word for it!)

SCIEX was very proud to have an illustration of the Acoustic Ejection Mass Spectrometry (AEMS) technology that powers the Echo® MS system on the front cover of the Journal of the American Society for Mass Spectrometry in January 2023. The associated article—Ultrahigh-Throughput Intact Protein Analysis with Acoustic Ejection Mass Spectrometry—was co-authored by scientists from SCIEX and Merck.

Back to the new basics: Part 1 | Making the leap from GC-MS to LC-MS

Back to the new basics: Part 1 | Making the leap from GC-MS to LC-MS

Producing accurate results quickly in a demanding environment is no easy feat for analytical scientists. What’s more, many of us are constantly questioning ourselves—I certainly am—about whether we are employing the best technique for the analysis at hand.

It’s an overwhelming thought, considering the wide range of tools that are available to choose from, each of which offers varying levels of capacity, sensitivity, selectivity, specificity and cost. How do you meet the unique needs of your organization without breaking the bank? I get it, and I’m not here to convince you it’s easy. My aim is to guide you through the process to help you make the right decision for you.

MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

General recommendations when beginning method development Objective: The purpose of this document is to provide a quick reference for transferring MRM-based quantification methods from a SCIEX Triple Quad or QTRAP 6500+ system to a SCIEX 7500 system. While the best...

Identifying the unknown PFAS profile in firefighting foams/AFFF

Identifying the unknown PFAS profile in firefighting foams/AFFF

According to a recent study from Harvard University, the US EPA, and NIEHS, traditional targeted analysis techniques poorly characterize the PFAS composition of contemporary PFAS-based firefighting foams, know as aqueous film-forming foams (AFFF).  Using the EPA 533 PFAS drinking water method for the analyte list, the researchers found that targeted mass spectrometry methods accounted for <1% of organic fluorine content.  This is important because it demonstrates that targeted analysis methods miss nearly all the PFAS compounds in modern AFFF mixtures, thus underestimating the risk to human health and the environment.

Methods for OPI electrode cleaning for Echo® MS system electrodes

High level method optimization considerations for Echo MS system

While an in-depth discussion of method development and optimization for the Echo® MS system is beyond the scope of a community post, here are some points to consider as part of the process: The maximum recommended ion spray voltage for prolonged electrode life is 5000...

Methods for OPI electrode cleaning for Echo® MS system electrodes

Tips to maximize electrode lifetime for Echo MS system

While it’s easy to think of the Echo® MS system as an ultrafast LC system in front of the SCIEX Triple Quad 6500+ mass spectrometer, the system operates on fundamentally different principles. For this reason, it requires different routine maintenance to keep it...

Standard addition workflow – for quantification and calculating background levels

Standard addition workflow – for quantification and calculating background levels

The method of standard addition is a quantitative analysis approach used in situations where matrix effects from complex samples contributes to the analytical signal. This makes it impossible to compare the analytical signal between sample and standard using a...

How do I define the experimental design (the metadata) for my SWATH acquisition study within the OneOmics suite? What are the requirement for replicates?

How do I define the experimental design (the metadata) for my SWATH acquisition study within the OneOmics suite? What are the requirement for replicates?

In quantitative Omics research, the goal is to understand which analytes (protein or metabolite) are perturbed between experimental conditions; therefore we carefully design our studies to explore these questions. The algorithms used within the Assembler application...

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