Professor Michaela Rumlová, head of a research group of the National Institute of Virology and Bacteriology at UCT Prague (and Vice-Rector for doctoral studies), holder of a licensed patent &nbsp;for antiretroviral testing assays, and recipient of the Czech Science Foundation’s President’s Award for HIV research, has also become the principal investigator of the bilateral INTER-EXCELLENCE II project “Cellular factors regulating the export and packaging of unspliced ​​retroviral RNA”, starting this year. In this interview, she explains how retroviruses such as HIV “hack” the cell in order to export their own genome from the nucleus into the cytoplasm, and then to the site where it is specifically packaged into nascent viral particles, a key step in viral replication. Her team is collaborating with the NIH (National Institutes of Health) and Rockefeller University to elucidate mechanisms that may help reveal new vulnerable points in the retrovirus replication cycle while simultaneously clarifying related cellular processes.<h5>Could you describe your project and its main objectives?</h5>Retroviruses, such as HIV, are viruses that carry genetic information in the form of RNA; however, after entering a cell, they are able to reverse transcribe it into DNA and integrate it into the host genome. In order to replicate, they must transport their genetic information—in the form of unspliced RNA—from the nucleus into the cytosol. There, it serves both as a template for the production of viral proteins and as the genome of new viral particles. This is highly unusual, as the cell very carefully controls which RNA molecules are allowed to leave the nucleus. Normal protein-coding cellular RNAs, known as messenger RNAs (mRNAs), must undergo splicing—a processing step in which certain segments are removed—before being exported. When this process fails, mRNA that retains these segments is held back in the nucleus as part of quality control and subsequently degraded. Retroviruses have managed to outwit this cellular control machinery, allowing their unspliced RNA to pass into the cytoplasm.Our project focuses on identifying the cellular proteins that assist retroviruses in this step and on the mechanism by which protein complexes bound to viral RNA are remodelled during RNA transport. The goal is to understand how the virus uses cellular mechanisms to its advantage and how this pathway is linked to the subsequent fate of the RNA, i.e. to its translation and packaging into new viral particles.<h5>Why is this export of unspliced ​​RNA so important for retroviral replication?</h5>Because this RNA has a dual role for the virus. On the one hand, it serves as a template for synthesizing viral proteins in the cytoplasm; on the other, it represents the genetic material itself, which must be packaged into new viral particles. The virus must package its RNA genome in its unspliced form, as only this RNA contains essential sequences without which further viral replication would be impossible.Simply put: the virus needs to get a complete copy of its genetic instructions out of the nucleus. Once the viral RNA is in the cytoplasm, it can be used as a template for synthesizing viral proteins; and a portion of these RNA molecules is then selected and packaged into a new particle as a genome. We are interested in how the virus forces the cell to allow viral RNA that is, from the cell’s perspective, “unfinished,” that is unspliced, to leave the nucleus. We are also investigating how the cell and the virus together - albeit unintentionally from the cell’s perspective - determine which RNA molecule will be translated into proteins and which will be packaged as the genome. This is one of the key, yet still not fully understood, steps of retroviral replication.<h5>What do you think it was about your project that impressed the Ministry of Education, Youth and Sports’ jury the most?</h5>I believe the decisive factor was a combination of several elements. First, the reviewers were primarily interested in the scientific problem itself. We are investigating a mechanism that is essential for retroviruses, but still not sufficiently understood, which may also have broader implications for the regulation of cellular processes. In addition, the quality of the team, our strong collaboration with the NIH and Rockefeller University, and the use of modern methods that will allow us to track viral RNA in great detail also played a role. It was also important that the project has clear objectives and a realistic plan.<h5>How will this research contribute to the development of new treatments for retroviral infections?</h5>It is important to say that this is primarily basic research. Rather than developing a new drug directly, we are trying to understand, at the molecular level, the step that the virus cannot do without. Only when we fully understand the mechanism of these cellular processes and identify the essential factors for the export of unspliced ​​RNA and how they function, will we be able to better determine which interactions or mechanisms represent potentially vulnerable points. Similar mechanisms associated with the export of unspliced ​​mRNA also appear in some diseases, such as cancer, so I &nbsp;see the benefit of our research mainly in that it will refine our understanding of these pathological processes in the cell, and retroviruses help us do so. Therefore, our work on retroviruses not only shows us how the virus works, but also how the cell itself works.<h5>What responsibilities does your UCT Prague team have? How does the collaboration with your American partners work?</h5>At UCT Prague, we are conducting the project’s primary experimental work. Our research involves cell cultures, viral models, and various biochemical techniques ranging from immunochemistry to microscopy that allow us to track viral RNA and identify its cellular partners. In collaboration with colleagues from NIH, Frederick, we are developing single-particle tracking methods to observe viral RNA movement in living cells across both space and time. Furthermore, we are working with colleagues from Rockefeller University to employ iCLIP methods for the precise mapping of protein-binding sites on RNA. Both collaborations are valuable to us, because they are not just about data sharing, but also about the transfer of expertise and detailed know-how.<h5>Who else is collaborating on the project?</h5>At UCT Prague, we collaborate closely with the Department of Biotechnology and the Department of Biochemistry and Microbiology. Externally, we work with colleagues from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague) and the Central European Institute of Technology in Brno (CEITEC). Our research naturally necessitates the integration of diverse fields of expertise; it requires combining virology, cell biology, and biochemistry with advanced imaging and modern approaches to study RNA-protein interactions. This is exactly what makes our project capable of addressing complex questions that a single laboratory cannot tackle on its own.<h5>Are there plans to continue the project? Have you brought on new collaborators, and are you looking to welcome new colleagues to the team?</h5>Yes, definitely. In basic research, it often happens that one answered question opens up several more. High-quality, properly interpreted data provide a foundation you can build on — and that is what moves scientists forward. It is already clear that the topic of retroviral RNA export and packaging has broader implications and may reveal more general principles of how RNA functions within the cell. We also hope the project will be attractive to students, as it connects classical molecular biology, biochemistry, and virology with cutting-edge biotechnological methods. Students are already involved in the project as part of their bachelor’s and master’s theses.<h5>What was the personal turning point that motivated you to pursue a long-term investigation into retroviral particles?</h5>I first encountered retroviruses in the early 1990s during my diploma thesis, when I was working at IOCB Prague on HIV-1 protease inhibitors. At that time, AIDS could not yet be effectively treated, and retrovirus research had a completely different dimension. From the very beginning, I was fascinated by how such a relatively small and simple virus can outsmart evolutionarily highly optimized cellular processes and turn them to its own advantage. And that has never stopped fascinating me. From a scientific point of view, retroviruses are remarkable; just consider one of their enzymes, reverse transcriptase, without which no diagnostic or research laboratory in the world could function today. Without it, it would be impossible to diagnose RNA viruses like SARS-CoV-2, influenza, or HIV using RT-PCR tests, or, for example to produce recombinant human proteins in bacterial cells.

Tracking unspliced RNA: Professor Rumlová studies how retroviruses “hack” cells

High-performance liquid chromatography (HPLC) remains one of the most widely used analytical techniques for separating, identifying, and quantifying compounds in complex mixtures. Successful HPLC method development depends not only on selecting the correct column and optimizing the mobile phase composition, but also on choosing the appropriate detector. Even a perfectly optimized chromatographic separation provides little value if the detection system cannot properly capture and interpret the analytes of interest.In many ways, the detector acts as the “vision system” of the chromatograph. It converts separated compounds into measurable electronic signals, allowing analysts to identify components and determine their concentrations. The choice of detector therefore has a major impact on sensitivity, selectivity, robustness, and the overall quality of analytical data.This article provides an overview of the most common HPLC detection techniques, discusses their strengths and limitations, and outlines the most important criteria to consider when selecting a detector for a specific analytical task.<h3>HPLC Detection Technologies</h3>HPLC detectors are typically divided into two major categories:<ol><li>Specific detectors (solute-property detectors)</li><li>Bulk property detectors</li></ol>Specific detectors respond to a particular chemical or physical property of the analyte. Ideally, their signal is largely unaffected by changes in mobile phase composition. Common examples include UV/Vis detectors, fluorescence detectors, and mass spectrometers.Bulk property detectors, on the other hand, measure differences between the pure mobile phase and the mobile phase containing analytes. These detectors are considered more universal because they respond to properties shared by many compounds. Refractive index detectors are among the best-known examples, alongside conductivity and light-scattering detectors.Both detector categories have important advantages depending on the application, sample type, and analytical goals.<h3>Common Detector Types Used in HPLC</h3>A wide variety of detectors are available for HPLC systems, ranging from highly universal devices to extremely selective and sensitive technologies.Common detector options include:<ul><li>UV/Vis detectors</li><li>Diode array detectors (DAD/PDA)</li><li>Fluorescence detectors</li><li>Refractive index detectors (RID)</li><li>Conductivity detectors</li><li>Evaporative light scattering detectors (ELSD)</li><li>Charged aerosol detectors (CAD)</li><li>Mass spectrometry detectors (MS)</li></ul>Each technology offers a different balance of sensitivity, selectivity, robustness, operational complexity, and cost.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Detector_overview_with_characteristics_Graphic_by_KNAUER_84b0dd30b1.jpg" alt="KNAUER: Detector overview with characteristics. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Detector_overview_with_characteristics_Graphic_by_KNAUER_84b0dd30b1.jpg 245w," sizes="100vw" width="1293" height="596"><h3>Selecting the Right HPLC Detector</h3>There is no universally ideal detector for all HPLC applications. The best choice depends on several factors, including analyte chemistry, matrix complexity, required detection limits, and instrument compatibility.Careful detector selection is essential for obtaining reliable and meaningful analytical results.The following considerations can help guide the selection process.<h4>1. Chemical and Physical Properties of the Analytes</h4>The chemical nature of the compounds being analyzed is one of the most important selection criteria.Questions to consider include:<ul><li>Do the analytes contain chromophores?</li><li>Are the compounds naturally fluorescent?</li><li>What is their polarity?</li><li>What is their molecular weight?</li><li>Are they volatile or non-volatile?</li></ul>Compounds containing UV-active groups are often well suited for UV/Vis detection, while fluorescent molecules can benefit from the high sensitivity of fluorescence detectors. Non-UV-active compounds may require universal detection approaches such as CAD, ELSD, or mass spectrometry.<h4>2. Required Sensitivity</h4>Detector sensitivity determines the minimum concentration that can be reliably detected and quantified.Routine quality control analyses often rely on UV/Vis detectors because they provide sufficient sensitivity for many applications while remaining relatively simple and cost-effective. However, trace-level analysis or highly complex matrices may require more advanced technologies such as:<ul><li>Fluorescence detection</li><li>Charged aerosol detection</li><li>Mass spectrometry</li></ul>These techniques offer significantly lower detection limits and greater analytical specificity.<h4>3. Detector Linearity</h4>Linearity describes how well detector response correlates with analyte concentration across a defined range.A detector with strong linearity ensures accurate quantification and simplifies calibration procedures. Poor linearity can introduce quantification errors, especially when analyzing samples across broad concentration ranges.<h4>4. Dynamic Range</h4>Dynamic range refers to the concentration interval over which the detector can reliably measure analytes.Applications involving samples with highly variable concentrations require detectors capable of maintaining accurate response over a broad range. A wide dynamic range reduces the need for repeated dilutions or multiple analytical runs.<h4>5. Selectivity</h4>Selectivity defines the detector’s ability to distinguish target analytes from other matrix components.This factor becomes particularly important for complex samples containing many interfering substances. Highly selective detectors reduce the risk of overlapping signals and false positives.Mass spectrometry is often advantageous when dealing with unknown compounds or highly complicated sample matrices because it provides structural information in addition to quantitative data.<h4>6. Budget Considerations</h4>Detector cost is another practical factor that laboratories must evaluate.UV/Vis and refractive index detectors are generally among the more economical choices, making them attractive for routine analyses and standard applications.More sophisticated technologies such as fluorescence detection, CAD, or mass spectrometry typically require:<ul><li>Higher initial investment</li><li>Additional maintenance</li><li>More complex infrastructure</li><li>Greater operational expertise</li></ul>However, the overall value of the detector should always be considered in relation to analytical performance requirements and long-term application needs.<h4>7. Instrument and Mobile Phase Compatibility</h4>The selected detector must be compatible with the operational conditions of the HPLC system.Important parameters include:<ul><li>Flow rate range</li><li>Pressure limitations</li><li>Mobile phase composition</li><li>Solvent compatibility</li></ul>Some detectors are highly sensitive to mobile phase composition or gradient changes, while others tolerate a broader range of operating conditions.Ensuring proper compatibility helps prevent baseline instability, signal interference, and reduced detector performance.<h4>8. Destructive vs. Non-Destructive Detection</h4>Another important consideration is whether the analytical workflow involves only detection or also preparative purification.Non-destructive detectors allow collected fractions to remain intact after detection, which is highly beneficial for preparative chromatography and purification workflows.Destructive detectors, by contrast, consume or alter the sample during measurement and are therefore more suitable for analytical applications where sample recovery is not required.<h4>9. Reliability and Ease of Operation</h4>Practical usability is often just as important as analytical performance.Some detectors are designed for straightforward plug-and-play operation, while others require:<ul><li>Frequent calibration</li><li>Specialized maintenance</li><li>Dedicated gas supplies</li><li>Vacuum systems</li><li>Advanced operator expertise</li></ul>Laboratories should evaluate the available technical support, user experience, and maintenance capabilities before implementing more sophisticated detection technologies.Reliable operation and manageable maintenance requirements can significantly improve laboratory productivity and reduce downtime.Choosing the correct HPLC detector starts with understanding both the sample and the analytical objective. Rather than selecting a detector simply because it is available, laboratories should ensure that the technology aligns with the chemistry of the analytes, required performance characteristics, and workflow demands.In many cases, combining multiple detectors within a single HPLC system can provide even greater analytical insight by delivering complementary information from the same chromatographic separation.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Flow_scheme_for_detector_selection_Graphic_by_KNAUER_486004045f.jpg" alt="KNAUER: Flow scheme for detector selection. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Flow_scheme_for_detector_selection_Graphic_by_KNAUER_486004045f.jpg 245w," sizes="100vw" width="1316" height="808">Interested in learning more? Future articles will explore individual HPLC detection techniques in greater detail, including their operating principles, application areas, and practical advantages for different analytical workflows.

A comprehensive guide for selecting the appropriate HPLC detector

News from LabRulezLCMS Library - Week 20, 2026

Article

Product

Application

Scientists

Science and research

The University of Chemistry and Technology, Prague is a natural centre of first-rate study and research in the area of chemistry in Czechia and is one of the country's largest educational and research institutions focused on technical chemistry, chemical and biochemical technologies, material and chemical engineering, food chemistry, and environmental studies.

UCT Prague

Everything from the world of analytical chemistry in one place. We connect people in solving their problems. At Labrulez you will find all the necessary information easily, quickly and clearly. Stop searching and start finding.

LabRulez

Based in Berlin, KNAUER is a medium-sized, owner-managed company that has been serving the sciences since 1962. We develop and manufacture scientific instruments of superior quality for liquid chromatography, including: Analytical HPLC/UHPLC, Preparative HPLC, Fast protein liquid chromatography (FPLC), Multi-column chromatography/Simulated moving bed (SMB) chromatography. High pressure dosing, in-line detection systems, and osmometry are additional business areas.

KNAUER

Tosoh Bioscience

Phenomenex

Thermo Fisher Scientific

SelectScience

Waters Corporation

PhenoAcademy Webinars
 Liquid Chromatography Series
<h4>HPLC Method Development: Practical Approaches for Identifying Equivalent and Orthogonal Columns</h4>
<ul>
<li>Recognize columns exhibiting comparable selectivity to your current column selection</li>
<li>Identify columns with different or orthogonal selectivity to your current column of choice</li>
<li>Understand the resources that are available for selectivity data for HPLC columns</li>
</ul>
<blockquote>
Presenter: Kevin Zhao (Senior Technical Specialist)
</blockquote>
<blockquote>
Kevin Zhao is the Senior Technical Specialist with Phenomenex and has 5 years of experience in biochemistry research; 4 years of Protein/Cancer research with CSULA-City of Hope Cancer Collaborative and over 9 years in Phenomenex. Mr. Zhao is a member of a global Technical Support Team which includes providing problem-solving, troubleshooting, and applications assistance for customers worldwide in the fields of chromatography (liquid and gas) and sample preparation, and also handling Industries supported include – pharmaceutical and biopharmaceutical, clinical research and clinical toxicology, food safety, environmental, fuels and specialty chemicals. Mr. Zhao received his B.S. in Biology at the California State Polytechnic University, Pomona. earned his M.S. in Biochemistry at California State University, Los Angeles, and also earned a MBA at the University of the Incarnate Word.
</blockquote>
<blockquote>
Presenter: Koen Askamp (Technical Specialist)
</blockquote>
<blockquote>
Koen is from the Netherlands, studied Molecular Life Sciences at Wageningen University (Netherlands), majoring in immunology. Analytical Chemistry was one of my favorite courses – who doesn’t love solving puzzles?
</blockquote>
<blockquote>
I like drumming, scuba diving, motorcycle-riding, and this past winter I learned how to ski (a little)!
</blockquote>
<blockquote>
Presenter: Namrata Saxena (Technical Manager)
</blockquote>
<blockquote>
Namrata Saxena is a Technical Manager - Asia/Pacific” with Phenomenex and is based in Sydney, Australia. She has a post graduate degree with a specialization in Analytical Chemistry, with extensive experience in the Liquid chromatography domain, and her current focus is in Omics and Biologics field. 
</blockquote>
<blockquote>
Before joining Phenomenex she had worked as “Product Specialist” and spent several years in column chemistry, column manufacturing and method development in the application and manufacturing labs of Bischoff Chromatography, Germany. 
</blockquote>
<blockquote>
In her current role, she provides product selection, method development, training and troubleshooting support to customers as well as Phenomenex Sales Consultants globally. 
</blockquote>

Phenomenex: PhenoAcademy Webinars - Liquid Chromatography Series

HPLC Method Development: Practical Approaches for Identifying Equivalent and Orthogonal Columns

Recognize columns exhibiting comparable selectivity to your current column selection.

Identification of Equivalent and Orthogonal HPLC Columns

Aggregate analysis of Adeno Associated Virus (AAV) is crucial for quality assessment and currently presents various challenges including long run time, high volume sample consumption where samples are scares and over all requires reliable technique to address all aspects related to quality and throughput.
In this webinar, the speakers will focus on optimizing a high throughput SEC method using a novel size exclusion chemistry to reduce sample consumption and run time. Additionally, method versatility with multiple mobile phase, multiple detectors across various AAV serotypes will be explored. 
<h5>Key Learning Points:</h5>
<ul>
<li>Learn about a novel Size exclusion chemistry that can improve lab throughput and reduce sample consumption for AAV analysis</li>
<li>Find new method optimization tips and tricks to maximize AAV Aggregate separation</li>
<li>Understand how optimizing particle chemistry, pore size and hardware can improve Aggregate separation in Size Exclusion Chromatography of AAVs</li>
</ul>
<blockquote>
Presenter: Shilin Cheung, PhD (Sr. Research Scientist, Phenomenex)
</blockquote>
<blockquote>
Dr. Cheung received her BS (2006) and Ph.D. (2012) in Bioanalytical Chemistry from the University of Toronto. She has developed, qualified, and validated innovative analytical methods in CE based microfluidics, automated low volume UV-vis spec., and UHPLC assays. Her methods have been applied to manufacturing process developments, formulation and stability and DS/DP characterization and specification testing. At the Phenomenex Innovation Campus she is focused on developing fit for purpose analytical methods to help advance developments in gene therapeutics.
</blockquote>
<blockquote>
Presenter: Ramkumar Dhandapani, PhD (Senior Product Manager, Phenomenex)
</blockquote>
<blockquote>
Dr. Dhandapani has been in the chromatography industry for over 20 years with hands-on and troubleshooting experience. He has earnt a Masters and PhD degree in Analytical chemistry from Seton Hall University with specialization in Microextractions, Multidimentional Chromatography and Tandem Mass Specs techniques. He has developed and validated several regulatory compliant methods in Pharmaceutical, Food, Fuels and Environmental industry as well as incorporated method improvement and troubleshooting across a range of separation techniques. Dr. Dhandapani joined Phenomenex in August of 2014 and he serves as a Senior Product Manager at Phenomenex. In addition to managing the product line, Dr. Dhandapani presents on innovations in chromatography at various chromatography conference.
</blockquote>

Phenomenex: Overcoming Challenges with AAV Aggregate Analysis Using a Novel Size Exclusion Particle

Overcoming Challenges with AAV Aggregate Analysis Using a Novel Size Exclusion Particle

Optimization of high throughput SEC method using a novel size exclusion chemistry to reduce sample consumption and  run time

AAV Aggregate Analysis Using a Novel Size Exclusion Particle

In this live webinar, we will introduce the brand new Thermo Scientific™ Hypersil GOLD™ Peptide LC Column, designed for all peptide separation, including excellent retention of hydrophilic peptides and separation of deamidated species in a single run. This column is ideal for the development and manufacturing of biopharmaceuticals, achieving minimal RSD% and impeccable lot-to-lot consistency.
Following a product presentation of this advanced technology, you will get a chance to hear testimonies and results from our customers and early-adopters in the field. Finally, our experts will proceed to dive deeper into the related applications, such as peptide mapping and monitoring as part of the Multi-Attribute Method (MAM), to provide you with the solutions to resolve all your peptide challenges. We hope to see you there! 
Learning Points:
<ul>
<li>Introduction to the new Hypersil GOLD Peptide LC Column</li>
<li>Hear from early adopters about their use of this advanced technology</li>
<li>Dive deeper into the related applications to resolve all peptide challenges</li>
</ul>
Who should attend?
<ul>
<li>Biopharmaceutical research scientists</li>
<li>Analytical scientists from biopharma companies working on or interested in peptide mapping and monitoring</li>
<li>PhD students and scientists looking to advance their knowledge of peptide mapping and monitoring</li>
</ul>
Short notice:
Can&#39;t attend the live broadcast? No problem! Register anyway and you will automatically receive the link to the webinar recording. 
<blockquote>
Presenter: Serdar Bilgesoy (Product Manager Premier LC columns, Thermo Fisher Scientific)
</blockquote>
<blockquote>
As the Global Product Manager for LC Columns at Thermo Fisher Scientific, Serdar brings over 15 years of experience in analytical instruments across various roles in product management, sales, marketing, application, and service responsibilities. He has specialized in segments such as Life Sciences, Clinical, Pharma, Biopharma, and Forensics. He is an experienced Application, Sales, and Marketing Executive in HPLC, LC-MS/MS, LC-MS/TOF, and MALDI-TOF instruments, possessing sophisticated marketing knowledge, a vast sales network, technical background, and innovative solutions expertise.
</blockquote>

ThermoFisher Scientific: Resolve all your peptide challenges: deep dive into new separation technology and applications

Resolve all your peptide challenges: deep dive into new separation technology and applications

We will introduce the brand new Thermo Scientific™ Hypersil GOLD™ Peptide LC Column, designed for all peptide separation.

Peptide challenges: new separation technology

By attending this eSeminar, you will:
<ul>
<li>Gain practical insights into optimizing sample preparation in alignment with EPA Method 1633’s regulatory requirements by the use of dual-phase SPE cartridges, covering background analysis, MDL studies, and recoveries</li>
<li>Benefit from real-world experiences from Complete Environmental Testing, offering valuable insights on navigating EPA 1633 in an end-to-end workflow, while utilizing dual-phase SPE cartridges to improve laboratory efficiency</li>
<li>Understand key details for successful PFAS analysis</li>
<li>Learn how to optimize analysis for ultra-short chain PFAS compounds</li>
<li>See how to expand the range of PFAS compounds to analyze in a single run</li>
</ul>
<h4>Event Overview</h4>
Separation Science, in collaboration with its sponsors Waters and Restek, is pleased to bring you an upcoming online eSeminar focusing on advances in PFAS analysis. This unique event will bring together key experts in the field and provide an interactive learning environment for scientists working in this industry.
<h4>Presentations</h4>
Efficiency in EPA Method 1633: Validation and Implementation Strategies
by Jeffrey Smith, Director of Operations, Complete Environmental Testing (CET)
Join us for a presentation focused on optimizing EPA Method 1633 in your laboratory highlighting the validation and implementation of dual-phase WAX and GCB cartridges. EPA 1633 establishes a method for the determination of 40 PFAS from challenging matrices such as non-potable waters, soils, biosolids, and tissue. For these matrix types, sample preparation has moved beyond the use of a WAX cartridge alone. GCB has been added to the sample preparation workflow to provide additional sample cleanup. We will discuss the full EPA 1633 workflow, including topics such as background analysis for soils and water, MDLs achieved, observed recovery in authentic samples, and the practical advantages of dual-phase cartridges in reducing manual labor steps compared to loose GCB in EPA 1633.
This presentation is designed for scientists, laboratory managers, and others looking to implement and validate EPA Method 1633 or optimize their sample preparation process in their current workflow. Join us as Complete Environmental Testing shares experiences on working with the complex matrices in EPA 1633 and breaks down advantages in their method workflow with the use of dual-phase SPE cartridges.
Untapped Ultrashort-chain PFAS Analysis Combined with Routine PFAS Analysis in a Single LC-MS/MS Run
by Mike Chang, Market Development Manager, Restek Corporation
Starting from measuring C8 many decades ago, today’s PFAS testing requires a lot more chromatography capabilities when an extended list of PFAS analysis is desired. Chain length ranging from C1 to C18 and a functional group changing from carboxylic acids to ethers, sulfonamides, and more, with multiple oxygens in the structure, can be challenging for a chromatograph all in one run. In this presentation, we will see examples of a combined PFAS panel analyzed in one run with chain length from C1 and above, in addition to AFFF and FTS compounds.
<h4>What you need to know:</h4>
Date: 16 April, 2024
Start times:
<ul>
<li>Broadcast 1: 9 am BST (London) / 10 am CEST (Paris/Berlin) / 1:30 pm IST (New Delhi) / 4 pm SGT (Singapore)
</li>
<li>Broadcast 2: 10 am PDT (Los Angeles) / 12 pm CDT (Chicago) / 1 pm EDT (New York)
</li>
</ul>
Duration: Approximately 90 minutes
<blockquote>
Presenter: Jeffrey Smith (Director of Operations, Complete Environmental Testing (CET))
</blockquote>
<blockquote>
Jeffrey Smith holds a BS in Chemistry from Quinnipiac University. He has been working in environmental analytical chemistry for 18 years, with experience in several disciplines, including GC/MS and LC-MS/MS. Jeffrey now serves as the director of operations at Complete Environmental Testing. For the past few years, his focus as director has been building the PFAS department at CET from the ground up, including method development and researching LC/MS/MS instrumentation for the laboratory. Jeffrey serves on several PFAS work groups and is an active member of the Reasonable Confidence QA/QC Protocols work group for the state of Connecticut.
</blockquote>
<blockquote>
Presenter: Mike Chang (Market Development Manager, Restek Corporation)
</blockquote>
<blockquote>
With an analytical chemistry background and 15+ years of experience in the chromatography industry, from instrumentation to applications, Mike is the key liaison to testing agencies and industries, bringing better ways of measuring contaminants in the environment and food. He has been chairing PFAS sessions and presenting PFAS topics at various conferences.
</blockquote>

Advances in PFAS Analysis

Understand essential details for successful PFAS analysis and optimize EPA Method 1633 in your lab.

Christian Rohrer, Director Sales and Marketing at Tosoh Bioscience GmbH, will present the next edition of Tosoh Tuesday, a webinar series held by Chromatography Experts.
On Tuesday, April 16, Corey Meadows, Product Specialist Bioanalysis at Tosoh Bioscience, dives into the analysis of antibody-drug conjugates and their drug-antibody ratio by hydrophobic interaction chromatography.
Antibody-drug conjugates (ADCs) are dual-action cancer biotherapeutics, where monoclonal antibodies carrying tumor-killing payloads specifically bind to cancer cells and accelerate cancer cell death. Characterizing the ratio of tumor-killing payload to cancer-binding antibody (DAR) is a critical quality attribute needed to determine the potential potency of a given ADC candidate. This webinar features HIC as a solution for quantifying DARs in ADC biotherapeutics. An overview of ADC and HIC fundamentals will be presented, targeting analytical method development scientists seeking insights for mobile-phase and stationary-phase selections for separating variable conjugated ADC variants.
After the webinar, ask your questions during the live Q&amp;A session. 
<blockquote>
Presenter: Christian Rohrer (Director Sales and Marketing at Tosoh Bioscience GmbH)
</blockquote>
<blockquote>
Presenter: Corey Meadows (Product Specialist Bioanalysis at Tosoh Bioscience)
</blockquote>

Tosoh Bioscience: Tosoh Tuesday - Hydrophobic Interaction Chromatography as a Platform for Characterizing ADCs

Hydrophobic Interaction Chromatography as a Platform for Characterizing ADCs

Hydrophobic Interaction Chromatography as a Platform for Characterizing Antbody-Drug Conjugates

HIC for Characterizing ADCs

<h4>European Free Educational Webinar Series</h4>
Let&#39;s go back to the basics of Chromatography, Mass Spectrometry, Data Analysis and Trouble-shooting: understanding the importance of the basics will enable you to be more effective in your daily laboratory life.
<h4>EPISODE 1</h4>
Sample Preparation - Theory and Overview
What will you learn?
<ul>
<li>Goals and available Techniques</li>
<li>Intro to Solid Phase Extraction (SPE)</li>
</ul>
<h4>What&#39;s next?</h4>
Full Webinar Series Episodes List is available <a href="https://event.on24.com/wcc/r/4551012/F69479929A905500D8B21508527807E5/5385652">here</a>
Back to Basics - Sample Preparation: Theory and Overview
<ul>
<li>Tuesday, May 07, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Sample Preparation: Tips &amp; Tricks to make it simple
<ul>
<li>Wednesday, June 05, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Theory of Liquid Chromatography
<ul>
<li>Wednesday, July 03, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Basics of Liquid Chromatography
<ul>
<li>Tuesday, September 10, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Analytical Method Development
<ul>
<li>Wednesday, October 02, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - The importance of Compliance
<ul>
<li>Tuesday, October 22, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Introduction to Mass Spectrometry
<ul>
<li>Wednesday, November 13, 2024, 11:00 AM CET</li>
</ul>
Back to Basics - Troubleshooting your LC and MS Systems
<ul>
<li>Tuesday, December 10, 2024, 11:00 AM CET</li>
</ul>
Not sure to be able to attend live sessions?
Register today and watch the webinars on-demand
<blockquote>
Presenter: Xavier Rodriguez (Principal Sales Application Specialist, Waters)
</blockquote>

Waters Corporation: Back to Bacisc Free Educational Webinar Serries

Sample Preparation: Theory and Overview

The first episode will introduce you into goals and available techniques of Solid Phase Extraction (SPE).

<h5>Overview:</h5>
<ul>
<li>The reporting limit of a method is also dependent upon the consistency of clean blanks and elimination of sporadic contamination.</li>
<li>Vendors of PFAS consumables need to provide certified, trace level PFAS free products.</li>
<li>PFAS are everywhere! They are widely used, vendors/suppliers when contacted don&#39;t know their processes are using them.</li>
<li>Since PFAS contamination has become an issue with PFAS analysis all field samples are taken in duplicate, not just field blanks. </li>
<li>The complete data package and replicates need to be evaluated by the user in order to make sound conclusions and identify false positives. </li>
<li>Every step there is a chance to incorporate “free-range” PFAS in your sample, minimize the preparation steps</li>
<li>How PFAS is analyzed at EPA Region 5 Laboratory</li>
</ul>
<h5>Who Should Attend:</h5>
<ul>
<li>Anyone lab scientists, or managers involved in PFAS Analysis</li>
</ul>
<h5>Key Learning Points:</h5>
<ul>
<li>Learn how to approach analyzing for PFAS, it is not rocket science like they made it out to be</li>
<li>Become aware of Sporadic PFAS Contamination</li>
<li>Understand how to identify false positives</li>
<li>Require all analysis quality control and samples to be analyzed in replicates to identify false positives.</li>
</ul>
<blockquote>
Presenter: Larry Zintek (Organic Methods Group Leader, UA EPA)
</blockquote>
<blockquote>
Presenter: Maryam Sayeed (Product Management Specialist, Phenomenex)
</blockquote>

Phenomenex: Identifying and Avoid False Positives During Routine PFAS Analysis

Identifying and Avoid False Positives During Routine PFAS Analysis

Learn how to approach analyzing for PFAS, it is not rocket science like they made it out to be.

False Positives During Routine PFAS Analysis

Since 2018 when the presence of Nitrosamines was first reported in several ARB (angiotensin II receptor blocker) drugs, there has been increasing regulatory focus to mitigate the presence of these potential human carcinogens in drug substances and drug products.
<h5>Who Should Attend:</h5>
<ul>
<li>Anyone with an interest in, or challenged by, the analysis N-Nitrosamines and Nitrosamine Drug Substance Related Impurities (NDSRI) in API and/or Drug Products
</li>
<li>Analysts and Scientists working in the Pharmaceutical and Generic Pharmaceutical industries.
</li>
</ul>
<h5>Key Learning Points:</h5>
<ul>
<li>Review the latest regulatory updates (FDA and EMA)
</li>
<li>Learn about published LC-MS/MS applications which address the N-Nitrosamines and NDSRI analysis challenges in drug products
</li>
<li>Find solutions to sample preparation challenges for N-Nitrosamines analysis in drug products
</li>
<li>Obtain examples of specific Phenomenex applications for nitrosamines (10 mutagenic nitrosamine impurities in Acyclovir) and NDSRIs (N-nitroso propranolol in a propranolol drug substance and product)
</li>
</ul>
<blockquote>
Presenter: Phil Koerner (Market Development Manager, Pharmaceuticals)
</blockquote>

Phenomenex: Nitrosamines in Drug Products: Where Are We Now?

Nitrosamines in Drug Products: Where Are We Now?

Learn about published LC-MS/MS applications which address the N-Nitrosamines and NDSRI analysis challenges in drug products

<h4>PhenoAcademy Webinars Sample Preparation Series</h4>
Dealing with Proteins and Phospholipids: Advances using Simplified Liquid Extraction
<ul>
<li>Understand the challenges associated with matrices from clinical samples </li>
<li>Take a deep dive into a number of approaches to overcome the presence of proteins and lipids in the samples</li>
<li>Learn more about the methods through case studies on blood and urine</li>
</ul>
<blockquote>
Presenter: Laura Ward (Technical Specialist)
</blockquote>
<blockquote>
Laura Ward is a Technical Specialist for the Asia-Pacific region with Phenomenex, located in New Zealand. She completed an Honours thesis in the field of Geochemistry at the University of Sydney, Australia where she discovered a love for Analytical Chemistry. Following her academic pursuits, Laura joined Phenomenex Australia as a Technical Sales Consultant where she supported various industries and laboratories. After 5 years and a move to New Zealand, she has joined the Phenomenex Technical Team where she supports scientists globally with their method development, troubleshooting and application support. In her spare time Laura enjoys being outdoors in the New Zealand countryside and cooking from scratch, most recently venturing into cheesemaking!
</blockquote>
<blockquote>
Presenter: Lucia Geis Asteggiante (Technical Specialist)
</blockquote>
<blockquote>
Lucia is a Senior Technical Specialist that has recently joined Phenomenex’s Global Technical Team. She has a broad experience in the field of Analytical Chemistry with a particular focus on LC chromatography coupled with mass spectrometry. Lucia comes from a strong academic and regulatory background with experiences ranging from method development and analysis of small molecules to large protein complexes. She gained her Ph.D. at the University of Maryland - College Park, USA and did her post-doctoral work at the University of Oxford, UK. During her time as a researcher, she has authored/co-authored 23 scientific publications and 2 book chapters.
</blockquote>

Phenomenex: Dealing with Proteins and Phospholipids: Advances using Simplified Liquid Extraction

Dealing with Proteins and Phospholipids: Advances using Simplified Liquid Extraction

Understand the challenges associated with matrices from clinical samples .

Proteins and Phospholipids: Simplified Liquid Extraction

<h4>Event Overview:</h4>
In this webinar, we present an mRNA characterization workflow that includes sample preparation, LC-MS methodology and bioinformatics processing for the evaluation of 5&#39; Cap efficiency, mapping of oligonucleotide sequence fragments, isomer resolution and Poly (A) tail intact mass analysis.
Who Should Attend:
<ul>
<li>Researchers and Scientists: Ideal for those seeking to expand their insights into LC-MS characterization techniques and applications of mRNA modifications.</li>
<li>Quality Control and In-Process Testing Professionals: Recommended for professionals involved in quality control, in-process testing, or analytical development.</li>
<li>Biopharmaceutical Industry Professionals: Valuable for those evaluating and optimizing their current mRNA-based therapeutics development and characterization solutions.</li>
</ul>
Key Learning Points:
<ul>
<li>Explore the LC-MS characterization method for 5&#39; Cap, coding sequence mapping, and Poly(A) tail analysis.</li>
<li>Gain insights into utilizing ion-pairing reversed-phase LC-MS to characterize mRNA drug substances.</li>
<li>Discover the benefits of utilizing BioTi core-shell column technology to improve sensitivity and resolution for oligonucleotide identification.</li>
<li>Review of bioinformatics processing workflow</li>
</ul>
<blockquote>
Presenter: Roxana Eggleston-Rangel (Senior Applications Scientist, Phenomenex)
</blockquote>

Phenomenex: mRNA Characterization - From 5’ Cap to Poly (A): What IPRP–MS Can Tell You

mRNA Characterization - From 5’ Cap to Poly (A): What IPRP–MS Can Tell You

Presentation of mRNA characterization workflow including sample preparation, LC-MS methodology and bioinformatics processing.

LCMS webinars focusing on Consumables - page 12