<div><div><div>Scientists at IOCB Prague have developed a breakthrough technology that streamlines aptamer development. The new method integrates several biochemical and bioinformatics steps and paves the way for new diagnostic and therapeutic applications. Ongoing applications include wearable sensors that monitor selected biomarkers in real time and provide early warnings of impending health complications. The findings were published in Nature Communications.</div></div><div>Aptamers are short DNA or RNA strands that can recognize and bind to a specific target molecule with high precision. Similar to antibodies, they can be used to detect these molecules or modulate their activity. Unlike antibodies, they are much more stable, can be produced synthetically, and can be chemically modified to achieve the desired properties. As a result, they can offer capabilities that cannot be achieved with antibodies.</div><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UOCHB_Nova_technologie_inovuje_vyvoj_aptameru_syntetickych_alternativ_protilatek_2_81e99b9900.jpg" alt="IOCHB Prague: New technology streamlines the development of aptamers, synthetic alternatives to antibodies: Chemically modified DNA aptamer bound to the target protein." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_UOCHB_Nova_technologie_inovuje_vyvoj_aptameru_syntetickych_alternativ_protilatek_2_81e99b9900.jpg 228w," sizes="100vw" width="1343" height="916">As demand grows for accurate and rapid diagnostic tools, aptamers are often better suited to these applications than antibodies. However, developing aptamers is both experimentally demanding and time-consuming. A team of scientists from IOCB Prague, led by Dr. Marek Ondruš and <a target="_blank" rel="noopener noreferrer" href="https://hocek.group.uochb.cz/en">Prof. Michal Hocek</a>, has now developed a technology that significantly shortens the development process.“Developing an aptamer is often like looking for a needle in a haystack. Among trillions of different DNA sequences, we search for the one that binds strongly and specifically to a target molecule. Our new approach first screen for ‘aptamer families’ – hundreds of related sequences – and then identify the best-performing member of the family. This approach can reduce development time from several months to only a few days,” says Marek Ondruš.<blockquote>Video:<a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=_3zXUeVMugU"> New technology streamlines the development of aptamers, synthetic alternatives to antibodies&nbsp;</a></blockquote>The team has also expanded the potential applications of aptamers by chemically modifying their building blocks. For example, introducing functional groups similar to those found naturally in amino acids allows the resulting molecules to combine the advantages of both DNA and antibodies: Their sequence is encoded by the order of nucleotides in DNA, while the attached chemical modifications greatly expand their ability to recognize biologically relevant targets and mimic interactions between proteins that are underlying many biological processes.The researchers demonstrated the potential of this new method using the human insulin receptor, a key protein that regulates blood sugar levels. They developed an aptamer that specifically binds to the receptor and elucidated the molecular basis of this interaction using cryo-electron microscopy. “We have shown that chemically introduced functional groups play a crucial role not only in target recognition and formation of the aptamer–protein complex, but also in stabilizing the DNA aptamer’s structure. Our findings provide new insights into how chemically modified nucleic acids can mimic key properties of proteins,” says Marek Ondruš.In the future, the technology could complement – or, in some applications, even replace – antibody-based diagnostic tools. Researchers are collaborating with <a target="_blank" rel="noopener noreferrer" href="http://iocbtech.cz/">IOCB Tech</a> on its further development, as the company helps to bring discoveries from IOCB Prague into practical applications.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UOCHB_Nova_technologie_inovuje_vyvoj_aptameru_syntetickych_alternativ_protilatek_9694c21671.jpg" alt="IOCHB Prague/Tomáš Belloň: New technology streamlines the development of aptamers, synthetic alternatives to antibodies: Dr. Marek Ondruš, first author of the study, and Prof. Michal Hocek, head of the Bioorganic and Medicinal Chemistry of Nucleic Acids research group at IOCB Prague." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_UOCHB_Nova_technologie_inovuje_vyvoj_aptameru_syntetickych_alternativ_protilatek_9694c21671.jpg 234w," sizes="100vw" width="2000" height="1335"><blockquote><h4>Original article</h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.nature.com/articles/s41467-026-73676-y#citeas">Expedient single-round selection of hyper-modified aptamer targeting insulin receptor from over-represented dually nucleobase-modified DNA libraries</a></h4>ablo Alberto Franco-Urquijo, Marek Ondruš, Jaroslav Kurfürst, Jana Škerlová, Irena Selicharová, Lucie Mužíková Čechová, Hana Šváchová, Alena Semerádtová, Anatolij Filimoněnko, Adéla Fejfarová, Jiří Homola, Tomáš Kouba &amp; Michal HocekNat. Commun., 2026<a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1038/s41467-026-73676-y">https://doi.org/10.1038/s41467-026-73676-y</a>&nbsp;<h6>licenced under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a></h6></blockquote><h4>Abstract</h4>Discovery of functional nucleic acids from randomized libraries typically relies on multiple, time-consuming iterative rounds of in vitro selection with low success rate. Here, we present a single-round selection strategy for rapid screening of multiple over-represented nucleobase-modified DNA libraries and various selection conditions, capable of identifying high-affinity modified aptamers. Double partition followed by amplification of eluted sequences, NGS analysis and clustering provides fast identification of aptamer candidates. Screening of modified DNA libraries containing modified adenine and uracil nucleotides bearing hydrophobic aromatic phenyl and indole moieties results in development of an aptamer binding human insulin receptor with sub-nanomolar affinity and exquisite specificity. Cryo-EM structure reveals the importance of each aromatic modification, either in stabilizing the secondary structure or facilitating interactions with the protein surface. This approach addresses the main drawbacks of aptamer selection and has potential for high-throughput screening and accelerating the development of next-generation aptamers for diagnostics or therapeutics.</div>

New technology streamlines the development of aptamers, synthetic alternatives to antibodies

Clarity 10.2 expands instrument control capabilities with new control modules and updates the MS extension to help you work more efficiently.<h4><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999">Clarity</a> 10.2 highlights</h4><ul><li>New and updated control modules</li><li>Improved MS data import and export</li><li>Obsolete hardware support ended</li></ul><h4>Instrument control modules</h4>Clarity 10.2 introduces new instrument control modules from Annuo (AS-3117, FAS-3823) and updated instrument controls form Sykam and Ecom.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_Instrument_control_modules_5de26782b0.jpg" alt="DataApex: Instrument control modules" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_Instrument_control_modules_5de26782b0.jpg 228w," sizes="100vw" width="380" height="260"><h4>MS data import/export improvements</h4>Clarity improves MS data exchange, especially for *.cdf files. MS instruments now support export and import of multiple spectral data and non-spectral signal data in the same CDF file. Import also better handles uniform sampling information, m/z Step values, scale factors, and file names with non-ASCII characters. Exporting individual chromatogram signals from MS instruments is now available through a separate Export Chromatogram dialog.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_MS_data_import_export_improvements_a7967a4020.jpg" alt="DataApex: MS data import-export improvements" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_MS_data_import_export_improvements_a7967a4020.jpg 228w," sizes="100vw" width="378" height="259"><h4>Obsolete hardware support terminated</h4>Due to changes in Windows driver security requirements, this update discontinues support for obsolete hardware, including INT7, INT9, U-PAD, U-PAD2, and CB20.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_Obsolete_hardware_support_terminated_24d9329419.jpg" alt="DataApex: Obsolete hardware support terminated" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_Obsolete_hardware_support_terminated_24d9329419.jpg 228w," sizes="100vw" width="378" height="259"><blockquote>Explore the complete list of all changes, fixes, and additions in version 10.2.👉<a target="_blank" rel="noopener noreferrer" href="https://www.dataapex.com/version_history?product=1">See the complete changelog&nbsp;</a></blockquote>

Clarity Chromatography Software 10.2 released!

🎤Dr. Leigh Terry (University of Alabama)In this episode of Concentrating on Chromatography, we sit down with Dr. Leigh Terry from the University of Alabama to explore one of the biggest challenges in environmental analysis today: understanding—and accurately measuring—PFAS in water systems.While most regulatory methods focus on a small number of compounds like PFOA and PFOS, there may be thousands of PFAS compounds in the environment—and much of that burden goes undetected.<h4>In this episode, we cover:</h4><ul><li>Why PFAS are called “forever chemicals” (and why that label is evolving)</li><li>The limitations of targeted LC-MS/MS methods</li><li>What the fluorine mass balance problem reveals about PFAS destruction</li><li>How combustion ion chromatography (CIC) helps measure total organofluorine</li><li>Why “99.99% removal” doesn’t always mean what you think</li><li>Where PFAS actually end up in wastewater treatment systems</li><li>The most effective technologies for PFAS removal today</li><li>Why drinking water may only account for ~20% of total PFAS exposure</li></ul><h4>Key Insight:</h4>Even when analyzing dozens of PFAS compounds, researchers may only be capturing a small fraction of total organic fluorine—raising major questions about how we monitor and regulate these contaminants.<h3>Video Transcription</h3>In this episode of Concentrating on Chromatography, Dr. Leigh Terry discusses PFAS contamination in drinking water, the analytical challenges associated with measuring these compounds, current treatment technologies, and future directions for monitoring and regulation. The conversation highlights how analytical chemistry, environmental engineering, and public health intersect in addressing one of today's most discussed classes of emerging contaminants.<h4>Understanding PFAS and Their Significance</h4><h5>The University of Alabama Water Quality Research Center</h5>Dr. Leigh Terry is part of the University of Alabama's Center for Water Quality Research. The center operates an analytical laboratory focused on drinking water quality and the detection of contaminants at extremely low concentrations.The laboratory specializes in:<ul><li>Drinking water analysis</li><li>Organic contaminants</li><li>Emerging contaminants</li><li>PFAS monitoring</li><li>Water quality research</li></ul>Their work supports both research initiatives and practical solutions for water utilities and environmental agencies.<h4>Why Focus on PFAS?</h4>Although PFAS compounds have existed since the 1940s, public awareness has increased dramatically only in recent years.According to Dr. Terry, several factors contributed to the rapid growth of PFAS research:<ul><li>Increased media attention</li><li>New regulatory initiatives</li><li>Growing evidence of human exposure</li><li>Expanding research opportunities</li><li>Greater understanding of potential health risks</li></ul>PFAS are not new contaminants. Rather, society is only beginning to understand their prevalence in the environment and their potential impacts on human health.<h4>The Development of Standardized PFAS Methods</h4>One major advancement in PFAS analysis has been the development of standardized EPA methods.These methods allow:<ul><li>Consistent testing procedures</li><li>Comparable results between laboratories</li><li>Regulatory monitoring</li><li>Reliable data interpretation</li></ul>Dr. Terry notes that many of these standardized approaches began appearing around 2018–2019, providing a common framework for analytical laboratories and researchers.<h4>How Large Is the PFAS Universe?</h4>Many people are familiar with PFOA and PFOS, two of the most heavily studied PFAS compounds. However, these represent only a small fraction of the broader PFAS family.PFOA and PFOS are often referred to as:<ul><li>Legacy PFAS compounds</li><li>Original PFAS contaminants</li><li>Early commercial PFAS chemicals</li></ul>The challenge is that even minor modifications to molecular structure create entirely new PFAS compounds.Researchers estimate:<ul><li>Thousands of PFAS compounds exist</li><li>Some estimates exceed 10,000 compounds</li><li>Exact numbers depend on how PFAS are defined</li></ul>Scientific debate continues regarding classification and definition, making precise counting difficult.<h4>Why PFAS Are Called "Forever Chemicals"</h4>Dr. Terry notes that the phrase "forever chemicals" has become widely used, although she suggests the terminology could benefit from rebranding.PFAS persistence results from two key chemical properties.<h5>1. Amphiphilic Structure</h5>PFAS molecules contain:<ul><li>A water-loving (hydrophilic) head group</li><li>A water-repelling (hydrophobic) fluorinated tail</li></ul>This unusual combination allows PFAS to partition between:<ul><li>Water</li><li>Solids</li><li>Air-water interfaces</li><li>Foam</li></ul>Unlike many organic compounds, PFAS can interact effectively with multiple environmental phases.<h5>2. Extremely Strong Carbon–Fluorine Bonds</h5>The carbon–fluorine bond is among the strongest bonds in organic chemistry.As Dr. Terry explains:<ul><li>Large amounts of energy are required to break these bonds</li><li>Natural degradation processes are often ineffective</li><li>Destruction can require highly aggressive treatment conditions</li></ul>These properties make PFAS extremely persistent in both environmental systems and biological organisms.<h4>Toxicity, Regulations, and Environmental Behavior</h4><h5>Understanding PFAS Toxicity</h5>One of the biggest challenges in PFAS regulation is the incomplete understanding of toxicity.Dr. Terry explains that EPA regulations generally consider three factors:<ul><li>Presence in drinking water sources</li><li>Toxicity to humans</li><li>Availability of practical treatment options</li></ul>While some PFAS compounds are known to be harmful, many others remain insufficiently studied. Furthermore, PFAS often occur as mixtures rather than individual compounds.This creates important scientific questions:<ul><li>What is the toxicity of individual PFAS?</li><li>What is the toxicity of PFAS mixtures?</li><li>How should cumulative exposure be evaluated?</li></ul>These uncertainties continue to drive active research.<h4>What Happens to PFAS in Wastewater Treatment Plants?</h4>PFAS do not behave like many conventional contaminants.Rather than remaining fully dissolved in water, they often accumulate at interfaces such as:<ul><li>Water-solid interfaces</li><li>Water-air interfaces</li><li>Foam layers</li><li>Biological solids</li></ul>As a result:<ul><li>Some PFAS accumulate in biosolids</li><li>Some partition into foam</li><li>Some remain in treated effluent</li></ul>Their distribution depends on wastewater composition and treatment processes.<h4>Regulatory Monitoring and Targeted LC-MS Analysis</h4>Current EPA regulations focus on targeted analysis of specific PFAS compounds.Examples include:<ul><li>PFOA</li><li>PFOS</li></ul>Drinking water regulations currently establish maximum contaminant levels (MCLs) for these compounds at extremely low concentrations.Advantages of targeted LC-MS analysis include:<ul><li>Clearly defined analytes</li><li>Established regulatory limits</li><li>High analytical sensitivity</li><li>Reliable quantitation</li></ul>However, limitations remain:<ul><li>Only a small subset of PFAS is measured</li><li>Many PFAS compounds remain undetected</li><li>Total PFAS burden may be underestimated</li></ul>As Dr. Terry notes, targeted analysis provides only part of the overall picture.<h4>The Fluorine Mass Balance Problem</h4>One of the most important concepts discussed in the interview is fluorine mass balance.When PFAS degrade, fluorinated fragments may remain in the environment.This creates a critical question:Are treatment technologies truly destroying PFAS, or merely transforming them into shorter-chain PFAS compounds?To answer this, researchers perform fluorine mass balance calculations using:<ul><li>Targeted PFAS analysis</li><li>Fluoride measurements</li><li>Total organic fluorine measurements</li></ul>A successful destruction process should ultimately convert PFAS into fluoride ions rather than simply producing smaller PFAS molecules.<h4>Advanced Analysis, Treatment Technologies, and Future Directions</h4><h5>Combining Targeted and Bulk Fluorine Measurements</h5>Dr. Terry's group complements targeted LC-MS analysis with measurements of total organic fluorine.Approaches include:<ul><li>Absorbable Organic Fluorine (AOF)</li><li>Extractable Organic Fluorine (EOF)</li><li>Combustion Ion Chromatography (CIC)</li></ul>In these methods:<ul><li>Organic fluorine is captured</li><li>Samples are combusted</li><li>Released fluoride is quantified</li></ul>This provides insight into total fluorinated content, although contributions may originate from sources beyond PFAS, including pharmaceuticals and consumer products.<h4>Surprising Findings from Combined Analysis</h4>One important finding from wastewater studies was that targeted PFAS measurements accounted for only a small fraction of total organic fluorine.Dr. Terry reports that:<ul><li>Approximately 4% of measured AOF could be explained by targeted PFAS compounds</li><li>The majority of organic fluorine remained unidentified</li></ul>This suggests that environmental fluorine chemistry is considerably more complex than currently represented by routine monitoring programs.<h4>Preventing PFAS Contamination in the Laboratory</h4>PFAS analysis requires exceptionally strict quality control.Dr. Terry's laboratory routinely:<ul><li>Tests every new batch of SPE cartridges</li><li>Tests carbon tubes before use</li><li>Uses DI water blanks</li><li>Verifies consumables labeled as PFAS-free</li><li>Collects field blanks</li><li>Monitors analytical blanks throughout workflows</li></ul>These practices help prevent contamination from laboratory materials and consumables, a common challenge in ultra-trace PFAS analysis.<h4>Current PFAS Treatment Technologies</h4>Three technologies currently dominate PFAS removal in drinking water treatment:<ul><li>Granular Activated Carbon (GAC)</li><li>Ion Exchange Resins</li><li>Reverse Osmosis (RO)</li></ul>Selection depends on:<ul><li>PFAS concentration</li><li>Water quality</li><li>Local operating conditions</li><li>Utility infrastructure</li></ul>Although many emerging technologies are being investigated, these remain the most widely implemented solutions.<h4>Membrane Filtration and Pretreatment</h4>Dr. Terry collaborates with colleagues studying membrane-based PFAS treatment.Her own work focuses on pretreatment through biological filtration.The strategy involves:<ul><li>Removing natural organic matter</li><li>Reducing membrane fouling</li><li>Improving membrane performance</li><li>Extending operational efficiency</li></ul>This integrated approach demonstrates how multiple treatment technologies can work together to improve PFAS removal.<h4>Regional Monitoring Projects</h4>The University of Alabama team participates in EPA-supported monitoring efforts along the Gulf Coast.Their observations indicate:<ul><li>PFAS rarely occur alone</li><li>Multiple PFAS compounds frequently co-occur</li><li>Contamination often originates from identifiable point sources</li></ul>Examples include:<ul><li>Industrial facilities</li><li>Manufacturing operations</li><li>Military installations</li><li>Carpet manufacturing facilities</li></ul>Source identification remains a critical component of environmental monitoring programs.<h4>Future Directions for PFAS Monitoring</h4>Looking ahead, Dr. Terry sees several opportunities for improvement.Desired advances include:<ul><li>In situ monitoring technologies</li><li>Portable detection systems</li><li>Reduced analytical complexity</li><li>Lower instrument costs</li><li>Less expensive consumables</li><li>Faster analysis workflows</li></ul>Current PFAS testing requires substantial expertise, specialized instrumentation, and rigorous quality control, making widespread implementation challenging.<h4>Dr. Terry's Perspective on Long-Term Solutions</h4>When asked what major PFAS challenge she would most like to solve, Dr. Terry offered a broader perspective.Rather than focusing solely on remediation, she emphasized prevention.Her view is that society should:<ul><li>Better evaluate chemical toxicity before commercialization</li><li>Assess risks before large-scale deployment</li><li>Reduce introduction of harmful compounds into the environment</li><li>Support utilities tasked with contaminant removal</li></ul>She notes that water utilities often bear the responsibility of removing contaminants they did not create, highlighting the need for broader societal and regulatory support.<h4>Final Thoughts</h4>Dr. Terry encourages consumers to:<ul><li>Learn where their drinking water originates</li><li>Read annual water quality reports</li><li>Stay informed about local water quality</li><li>Consider appropriate home filtration where needed</li></ul>At the same time, she emphasizes confidence in municipal water systems and the importance of continued investment in water quality research, monitoring, and treatment technologies.<h4>Conclusion</h4>PFAS remain one of the most complex challenges in environmental chemistry and water treatment. Through advanced analytical methods such as LC-MS/MS, combustion ion chromatography, fluorine mass balance approaches, and large-scale monitoring programs, researchers like Dr. Leigh Terry are helping improve our understanding of these persistent contaminants.The interview highlights that solving the PFAS challenge will require a combination of better analytical tools, improved treatment technologies, stronger regulatory frameworks, and a greater emphasis on prevention before contaminants enter the environment.<blockquote>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</blockquote><blockquote><h4>Concentrating on Chromatography Podcast</h4>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!You can find Concentrating on Chromatography Podcast in podcast apps:<ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL">Spotify</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185">Apple podcast</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography">podscan</a></li></ul>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos">YouTube channel</a></blockquote>

PFAS in Water: Why We’re Missing 96% of the Problem

Article

Product

Video

Scientists

Environment

Water

Interview

Science and research

Software

Since 1991 DataApex develops and manufactures chromatography data stations. DataApex is constantly striving to provide users with efficient and up-to-date tools for chromatography data processing.

DataApex

The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) is a leading scientific institution in the Czech Republic, recognized internationally. Its primary mission is basic research in the fields of chemical biology and medicinal chemistry, organic and material oriented chemistry, chemistry of natural compounds, biochemistry and molecular biology, physical chemistry, theoretical chemistry, and analytical chemistry. 

Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences

Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

Separation Science

Agilent Technologies

Phenomenex

Waters Corporation

<ul>
<li>Wait what?! Who knew!? There are so many things that a mass spec can do.
</li>
<li>I&#39;ve used it for years, yes this may be true.
</li>
<li>I&#39;ve processed some samples, more than a few.
</li>
<li>But between me and you, I had no idea all the things it could do!
</li>
<li>From sample prep to separation, you just won&#39;t believe…
</li>
<li>All of the tips and tricks we have up our sleeve.
</li>
<li>So, take a few minutes, about 15 should do.
</li>
<li>And learn all the things your mass spec can do.
</li>
</ul>
Thinking of developing a new method utilizing MS? Selecting the best analytical method begins with a decision on how to best separate the analytes of interest. This choice will affect sample preparation and sample introduction, so it is important to get it right early. In this webinar we will review analyte structural properties that make the compound more amenable to either liquid chromatography or to gas chromatography.
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Presenter: Karen Yannell (LC/MS Application Engineer, Agilent Technologies, Inc.)
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Karen E. Yannell is a LC/MS Application Engineer at Agilent Technologies. She is an expert in small molecule high throughput analysis by triple quadrupole (TQ) and quadrupole time-of-flight (QTOF) mass spectrometry for applied markets. Her recent work has focused on developing routine Q-TOF workflows for both expert and non-expert users alike. Previously, Karen worked on forensic, metabolomics, and biomarker discovery applications with ambient ionization sources. She received her PhD in Analytical Chemistry from Purdue University where studied under the advisement of Prof. R. Graham Cooks. Outside of the laboratory, she enjoys cooking unique dishes and hiking along the beach with her dog.
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<blockquote>
Presenter: David Weil, PhD (Senior Applications Scientist, Agilent Technologies, Inc.)
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David Weil is a senior applications scientist in Agilent located in Wood Dale with over 30 years of experience using mass spectrometry. Prior to joining Agilent in 2004, he worked for 14 years at 3M in the Corporate Research Analytical Laboratories (St.Paul, MN) and 4 years at Nicolet/Extrel doing ultra-high resolution mass spectrometry. David received his Ph.D. in Physical Chemistry from the University of Minnesota and Post Doc with Dr Charles Wilkins at University of California-Riverside developing laser desorption FTMS and ion-molecule reactions. David has three grown sons and live with his wife Naomi just blocks from Wrigley Field and Lake Michigan.
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<blockquote>
Presenter: Matt Curtis, PhD (GC/MS Applications Scientist, Agilent Technologies, Inc.)
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Matt joined Agilent in 2013 as a GC/MS applications scientist in the Santa Clara, CA Center of Excellence. His primary responsibility is focused on providing instrument demos for customer interested in each technology Agilent offers; the GC/MS single quadrupole, triple quadrupole and the quadrupole Time-of-Flight. The variety of different samples submitted to the demo lab provide a unique knowledge of optimizing parameters for different applications to provide the best quality data from the instrument.
</blockquote>

Agilent Technologies: Selecting your Separation: Are my Compounds Better for GC or LC

Selecting your Separation: Are my Compounds Better for GC or LC

We will review analyte structural properties that make the compound more amenable to either liquid chromatography or to gas chromatography.

Separation selection: Are my Compounds Better for GC or LC

In preparative HPLC method development, our goal is the separation and isolation of a valuable compound. Throughput, yield, and purity of the compound are the important parameters for preparative HPLC.
In this webinar, we will discuss the process of scaling up from an analytical to a preparative HPLC method. We will also look at column considerations to increase sample throughput using superficially porous particles in preparative LC columns to drive speed and efficiency.
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Presenter: Mark Powell (Application Engineer, Agilent Technologies, Inc.)
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Mark Powell is an Applications Engineer located at Agilent’s Little Falls site in Wilmington, DE. Before joining Agilent in 2011, Mark worked in the pharmaceutical industry synthesizing, purifying and analyzing drug candidates. He provides applications assistance and technical support for Agilent’s HPLC columns and consumables.
</blockquote>

Scale Up with Confidence: Column Selection for Preparative HPLC

In this webinar, we will discuss the process of scaling up from an analytical to a preparative HPLC method.

Scale Up: Column Selection for Preparative HPLC

Having good peak shape can improve resolution and produce accurate and reliable quantitation results. Problems with peak shape, like fronting, tailing, shoulders, and splits, are all indicative of chromatography issues.
We will discuss factors affecting peak shape, such as the column, sample, mobile phase, and more, and offer remedies for improving peak shape.
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Presenter: Golnar Javadi (Application Engineer, Agilent Technologies, Inc.)
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Golnar Javadi is an applications engineer providing online applications assistance and technical support for LC columns and supplies, Sample Preparation products, and Spectroscopy supplies.
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Before joining Varian and then Agilent, Golnar worked in the pharmaceutical and nutraceutical industries on method development and quality control. She also taught college level chemistry courses for a few years.
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Golnar then joined Varian as a technical support specialist, providing customers with method development assistance and technical support on Sample Preparation (SPE, SLE, and Filtration), HPLC, GC, ToxiLab and DAT. After the Varian-Agilent merger, Golnar joined Agilent Technologies as an Applications Engineer. She provides technical support to customers on Sample Preparation products, Liquid Chromatography columns, and Spectroscopy supplies.
</blockquote>

Peak Shape and Why It Matters: How to Get Good Peak Shape

We will discuss factors affecting peak shape, such as the column, sample, mobile phase, and more, and offer remedies for improving peak shape.

Three Webinars and a Roundtable with Experts from Merck KGaA, Darmstadt, Germany, Metrohm &amp; Mettler Toledo
A Week Dedicated to Karl Fischer Titration!
Karl Fischer titration is still the most used, most accurate, and fastest method to determine water content in all kinds of sample matrices. This titration week covers different aspects that need to be considered when determining the water content in products, raw materials, and other substances. Experts from the life science business of Merck KGaA, Darmstadt, Germany, Metrohm AG, and Mettler Toledo will present and discuss different steps of the Karl Fischer titration process and how to improve it. Learnings include:
<ul>
<li>Karl Fischer titration process and tips for how to improve it</li>
<li>Karl Fischer oven method and its advantages</li>
<li>Reference materials to use for titer determination, instrument check, and result verification</li>
<li>Parameters needed to validate a Karl Fischer titration application</li>
<li>News and future aspects of Karl Fischer titration</li>
</ul>
<h3>The Karl Fischer Oven Method – Step by Step</h3>
arl Fischer (KF) titration is a standard method for the water content determination in all types of substances. However, for various reasons, some substances are not suitable for a direct Karl Fischer titration. These reasons include that they undergo side reaction with KF reagents; they contaminate the titration cell and/or the electrodes; the substances are poorly soluble in alcohol; they release their water only slowly; or the water is released at high temperatures only. These problems can be avoided by using the oven method. This makes the KF oven method the perfect solution for the analysis of difficult samples. By attending this presentation, you will learn:
<ul>
<li>The principle of the oven method</li>
<li>How to properly prepare your titration system with an oven</li>
<li>How to prepare your sample</li>
<li>How to select the optimal oven temperature</li>
</ul>
After viewing this webinar, you will know how to perform accurate sample measurements using the oven method.
<blockquote>
Presenter: Michael Margreth (Application Specialist - Karl Fischer Titration and Water Determination, Metrohm)
</blockquote>

The Karl Fischer Oven Method – Step by Step

After viewing this webinar, you will know how to perform accurate sample measurements using the oven method.

Purification is critical to many scientific workflows. Compounds of interest are rarely found to be the right purity in their native state. Join Waters and Virscidian for this 6-part webinar series to learn the basics of purification and application of purification principles for more advanced workflows.
<h3>PART I | Basics of High Performance Liquid Chromatography Purification</h3>
High Performance Liquid Chromatography (HPLC) is a common and effective technique to isolate a compound(s) of interest from a mixture. In this module, we will discuss factors involved in HPLC purification and scale up considerations.
Learning Objectives: 
<ul>
<li>Understand how to use HPLC purification</li>
<li>Make informed decisions on separation modes</li>
<li>Understand impact of decisions made during purification on larger workflow</li>
</ul>
<blockquote>
Presenter: Darcy Shave (Senior Product Manager, Waters Corporation)
</blockquote>
<blockquote>
Darcy Shave is currently aprincipalproduct manager in the Integrated Systems group atWaters Corporation (Milford, MA, USA), responsible for the purification and hardwareautomation products. Darcy has been with Waters for over 20 years, starting as anapplications chemist in the purification group. From there, he moved into a variety ofbusiness development roles before becoming a product manager for purification softwareabout 10 years ago and more recently for the entire purification portfolio.​
</blockquote>
<blockquote>
​He has a degree in Agricultural Chemistry from the University of Saskatchewan and workedin value added processing of natural products before joining Waters.
</blockquote>

Waters Corporation: Basics of High Performance Liquid Chromatography Purification

Basics of High Performance Liquid Chromatography Purification

We will discuss factors involved in HPLC purification and scale up considerations.

Basics High Performance Liquid Chromatography Purification

Purification is critical to many scientific workflows. Compounds of interest are rarely found to be the right purity in their native state. Join Waters and Virscidian for this 6-part webinar series to learn the basics of purification and application of purification principles for more advanced workflows.
<h3>PART 2 | Basics of Supercritical Fluid Chromatography Purification</h3>
Supercritical Fluid Chromatography (SFC) is an effective and green technique to isolate a compound(s) of interest from a mixture. SFC utilizes liquid CO2 to quickly isolate compounds while minimizing the efforts required to dry the collected fraction. In this module, we will discuss factors involved in SFC purification. 
Learning Objectives: 
<ul>
<li>Understand how to use SFC purification</li>
<li>Make informed decisions on method optimization</li>
<li>Understand impact of decisions made during purification on larger workflow</li>
</ul>
<blockquote>
Presenter: Andrew Leightner (Market Development Manager – Americas Field Marketing, Waters Corporation)
</blockquote>
<blockquote>
Andy Leightner has over 10 years of experience serving the pharma market from contract research organizations. He specialized in method development and validation leveraging LC, GC, and mass spectrometry to meet complex client needs. He supports pharmaceutical and biopharmaceutical discovery and development in the Americas for Waters Corporation. Andy received a bachelors degree in biology from the University of Wisconsin-Madison.
</blockquote>

Waters Corporation: Basics of Supercritical Fluid Chromatography Purification

Basics of Supercritical Fluid Chromatography Purification

We will discuss factors involved in SFC purification.

<h5>Key learning objectives:</h5>
<ul>
<li>What is chiral chromatography, chiral screening, why do it, what are the benefits...</li>
<li>What the chiral screening process looks like</li>
<li>Scope, deliverables, and timelines for chiral screening</li>
<li>How to request chiral screening services</li>
</ul>
<blockquote>
Presenter: Zandra Baja (Applications Scientist)
</blockquote>
<blockquote>
Zandra is an Applications Scientist at PhenoLogix specializing in chiral screening, USP and PhEur applications, and environmental GC-MS applications. Zandra obtained her bachelor&#39;s degree in chemistry from California State University of Long Beach. Prior to joining Phenomenex in 2021, she spent 3 years working as a chemist in the petroleum industry and 8 years as an analytical chemist working with gas chromatography in an environmental air testing laboratory. Zandra has also spent several years in quality assurance management where she was responsible for maintaining ISO/IEC 17025 and TNI Standard laboratory accreditations. 
</blockquote>

Phenomenex: Chiral Chromatography Screening 101

Chiral Chromatography Screening 101

What is chiral chromatography, chiral screening, why do it, what are the benefits.... What the chiral screening process looks like....

How about a 20 minute coffee break along with a bite of Empower? Here you go!
What you can learn: 
<ul>
<li>What&#39;s the difference between Archive and Backup and why do you need both</li>
<li>The cheapest, the fastest, or the most definitive data management strategy is meaningless if the data is untrustworthy</li>
<li>How including a complementary archive strategy to your existing backup will not only improve efficiency, but can reduce costs and regulatory risk</li>
<li>How both approaches are viable and the business value each one can offer</li>
</ul>
Register and prepare a coffee!
<blockquote>
Presenter: Ralf Schröder (Informatics Product Marketing Europe·Waters GesmbH)
</blockquote>

Waters Corporation: Waters Informatics series #5: Archive vs Backup (Po2)

Waters Informatics series #5: Archive vs Backup (Po2)

What's the difference between Archive and Backup and why do you need both?

The calculation of signal to noise ratio is a critical parameter during method development, method validation and routine monitoring the performance of a chromatographic method. Both Limit of Detection (LOD or LDL) and Limit of Quantitation (LOQ or LQL) are based on signal to noise ratio. Empower can calculate signal to noise ratio in many ways. While we designed this functionality in Empower to comply with pharmacopeia requirements, there are alternative methods for this calculation.
Key points of discussion will be:
<ul>
<li>Calculating Signal to Noise ratio as per USP/EP/JP Requirements</li>
<li>Calculating Signal to Noise ratio using other options within the System Suitability option</li>
<li>Calculating Signal to Noise ratio without the System Suitability Option</li>
</ul>
Please join us for a live discussion. As always, don’t forget to bring your Empower questions for this exclusive opportunity to ask our experts anything about Empower Software.
<blockquote>
Presenter: Neil Lander (Principal Product Manager, Waters Corporation)
</blockquote>
<blockquote>
Neil has worked for Waters Corporation since 1994 and has held a variety of positions including Technical Support Specialist, Technical Trainer, Manager Customer Education and currently, Principal Marketing Manager focusing on Informatics solutions. He provides internal support for Empower Chromatography Data System and is focused on developing laboratory software solutions that help organizations achieve their scientific and operational objectives. Prior to joining Waters, he was an analytical chemist where he gained experience in both the cosmetics and specialty chemical industries.
</blockquote>

Waters Corporation: Empower Tips: Ask Me Anything About Calculating Signal to Noise Ratio

Empower Tips: Ask Me Anything About Calculating Signal to Noise Ratio

The calculation of signal to noise ratio is a critical parameter during method development, validation and monitoring the performance.

Empower Tips: Calculating Signal to Noise Ratio

While making a UV-Vis measurement is simple, making an accurate measurement requires an understanding of instrument parameters and their effects on the measurement. Parameters include Baseline correction, spectral bandwidth, data interval, and many additional settings.
This presentation will provide an insight into these parameters and more.
<blockquote>
Presenter: Mark Fisher, PhD (Application Engineer, Molecular Spectroscopy, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Mark, an Application Scientist for Agilent Technologies, has over 35 years of experience in molecular spectroscopy. He has held roles in Agilent&#39;s UV-Vis-NIR, fluorescence, and atomic absorption product portfolios. In addition to identifying industry trends and new business needs, Mark&#39;s responsibilities include application development, pre and post-sales support, as well as acting as a customer advocate for new product and technology opportunities. Mark received his doctorate in analytical chemistry from the University of Nebraska-Lincoln.
</blockquote>
<blockquote>
Presenter: Scott Melis, PhD (Application Scientist, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Scott Melis has a PHD in Physics from Georgetown University in Washington, DC and started with Agilent in 2021 as a Molecular Spectroscopy Application Scientist. In his graduate work, Scott studied nanoparticle formation and growth for a variety of applications. Projects that he worked with include developing processes to deposit and characterize semiconducting molecular nano-cocrystals for use in optoelectronic devices as well as controlling polymer nanoparticle size through rapid mixing conditions.
</blockquote>

Agilent Technologies: Understanding UV-Vis Instrumental Parameters

Understanding UV-Vis Instrumental Parameters

This presentation will provide an insight into baseline correction, spectral bandwidth, data interval, and many additional settings

LCMS webinars focusing on Academy/Principles - page 21