<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

Metrohm

Mettler-Toledo

Agilent Technologies

Phenomenex

SelectScience

SCIEX

Waters Corporation

From beginner to expert, we can all benefit from a review of HPLC basics. In this two-part talk, we will work our way from basic chromatographic principles to advanced method development topics.
Method Development 102 will review and expand upon some of the 101 fundamentals as we cover advanced topics such as how to best transfer a method from one column dimension to another. We will explore reasons for why some methods are quite difficult to transfer to a different HPLC system. In addition, we will look at gradient method development and how to efficiently use a scouting gradient to quickly develop a good HPLC method.
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Presenter: Paul Altiero (Application Engineer, Agilent Technologies, Inc.)
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Paul Altiero is an Applications Engineer located at the Agilent Little Falls site in Wilmington, DE. Prior to coming to Agilent in 2009, Paul worked in the pharmaceutical industry performing LCMS bioanalysis supporting Drug Discovery DMPK. While at Agilent, Paul has been a field service engineer for LCMS as well as the integrating program manager for the RapidFire high throughput LCMS system. In his current role Paul’s responsibilities include technical support and application assistance for LCMS consumables.
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Agilent Technologies: HPLC Method Development: From Beginner to Expert, Part 2

HPLC Method Development: From Beginner to Expert, Part 2

Basic chromatographic principles to advanced method development topics.

From beginner to expert, we can all benefit from a review of HPLC basics. In this two-part talk, we will work our way from basic chromatographic principles to advanced method development topics.
In Method Development 101, we will cover such fundamentals as partitioning, retention factor, selectivity, and resolution. After a quick review of these basics, we seek to better understand the resolution equation and what it tells us about establishing or changing method conditions. We will also discuss how the physical/chemical properties of our analytes impact our choice of column chemistries.
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Presenter: Melissa Goodlad (Application Engineer, Agilent Technologies, Inc.)
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Melissa Goodlad is an Application Engineer providing applications assistance and technical support for Agilent’s HPLC columns and consumables. Before joining Agilent, Melissa was completing her PhD in Physical Chemistry at UC Merced studying nanoparticle self-assemblies.
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Agilent Technologies: HPLC Method Development: From Beginner to Expert, Part 1

HPLC Method Development: From Beginner to Expert, Part 1

Data integrity is strengthened through a detailed understanding of your data. This includes mapping your data flow, which necessitates questions such as:
<ul>
<li>How is data created?
</li>
<li>Where is data stored?
</li>
<li>What other data is relevant?
</li>
<li>How and where is data used within your business process?
</li>
<li>Where could risk exist?
</li>
</ul>
Understanding your data workflow allows you to focus in on the most critical data so you can identify potential data integrity risks and vulnerabilities. Facilitating a risk-based approach to process design, data integrity controls, workflow validation, and computerized system validation (CSV) enables you to confidently identify areas to monitor as you strive to ensure quality.
Please join us for a lively discussion as we explore this topic. As always, don’t forget to bring your questions for this exclusive opportunity to ask our experts anything about Empower Software.
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Presenter: Neil Lander (Principal Product Manager - Informatics Group, Waters Corporation)
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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 in Waters in the Informatics group. Neil provides internal support for Empower CDS software and is focused on developing laboratory software solutions that help organizations achieve their scientific and operational objectives. Prior to joining Waters Corporation, he was an analytical chemist where he gained experience in both the cosmetics and specialty chemical industries.
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Presenter: Fiona O&#39;Leary (Empower Informatics Consultant, Waters Corp.)
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Fiona is an experienced Empower Software and Data Integrity professional working with the EU Professional Services Team. She has ~18 years of experience with Waters, beginning with Technical Support &amp; Empower Training, moving to Empower Consultancy and Workflow Optimization in more recent years. Her focus now is on building Data Integrity into the Lab workflow, Custom Field automation and Electronic Data Review / Reporting optimization.
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Prior to joining Waters, Fiona spent some years in the GxP Pharmaceutical Manufacturing world, setting the scene for her currently goal of helping organizations achieve their scientific and operational objectives efficiently and within compliance guidelines. She graduated from Dublin City University in 2001 with a BSc Hons. Analytical Science.
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Presenter: Tracy Hibbs (Principal Consulting Product and Marketing Manager, Waters Corp.)
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Tracy has worked for Waters Corporation since 1999 and has held a variety of positions including Technical Trainer, Business Impact Consultant, Training Manager for Informatics and Data Integrity, and currently, Principal Consulting Marketing Manager focusing on Informatics solutions. Tracy provides support for Waters Empower Software Suite and is concentrated on developing laboratory data management software solutions that help organizations achieve their scientific and operational objectives in regulated environments. Prior to joining Waters, Tracy was a Research Scientist where she gained experience in chromatography and the associated data systems.​
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Waters: Empower Tips: Ask Me Anything About Data Flow and Data Process Mapping with Data Governance in Mind

Empower Tips: Ask Me Anything About Data Flow and Data Process Mapping with Data Governance in Mind

Empower: Data Flow, Data Process Mapping and Data Governance

PhenoAcademy Webinars
 Liquid Chromatography Series
<h4>A Guide to Building Your LC Method Development Kit Plus Tips on Storage &amp; Care</h4>
<ul>
<li>Learn how to choose different column phases for developing a LC method</li>
<li>Understand what kind of LC columns can be a strong method development kit</li>
<li>Identify how to take care of your LC column to extend its lifetime</li>
</ul>
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Presenter: Kevin Zhao (Senior Technical Specialist)
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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.
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Presenter: Koen Askamp (Technical Specialist)
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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?
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I like drumming, scuba diving, motorcycle-riding, and this past winter I learned how to ski (a little)!
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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

A Guide to Building Your LC Method Development Kit Plus Tips on Storage & Care

Learn how to choose different column phases for developing a LC method.

Building LC Method Development Plus Tips on Storage & Care

PhenoAcademy Webinars
 Liquid Chromatography Series
<h4>Measuring Peak Separation Quality</h4>
<ul>
<li>Discover the methodologies for calculating resolution, asymmetry, selectivity, and efficiency</li>
<li>Learn how to quantify the quality of a separation, along with a reference of what each value could and should be</li>
<li>Understand the physicochemical underpinnings of chromatographic separations</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>

Measuring Peak Separation Quality

Discover the methodologies for calculating resolution, asymmetry, selectivity, and efficiency

Along with gravimetry, titration is one of the oldest and most reliable quantitative analytical methods known. It is generally used as the primary reference method for other, mostly qualitative, analytical methods and it is indispensable for routine analysis in the laboratory.
In this webinar, Robert Tobler, Senior Application Specialist Titration at Metrohm International Headquarters, will give you an introduction to the basics of titration. After a brief excursion into the theory, Robert will demonstrate how to perform a titration step by step on a modern, automatic titrator with a photometric or an electrochemical sensor.
During a Q&amp;A session at the end of the webinar you can ask Robert any question you may have about titration. Join us on March 27; we are looking forward to welcoming you in this webinar!
<h5>Key learnings of this webinar:</h5>
<ul>
<li>The most important measuring modes for potentiometric titration and application examples from various industries</li>
<li>How to optimize your titration results for higher accuracy and better reproducibility</li>
<li>Common mistakes and how you can avoid them</li>
<li>How to properly handle and take care of your electrodes</li>
</ul>
<h5>Who should attend?</h5>
Lab technicians, chemists, and everybody else using titration for their routine analytics.
<blockquote>
Presenter: Robert Tobler (Senior Application Specialist Titration, Metrohm International Headquarters)
</blockquote>
<blockquote>
After his apprenticeship as a chemical laboratory technician and further training as a biomedical analyst, Robert Tobler studied chemistry at the Zurich University of Applied Science in Waedenswil, Switzerland. He joined Metrohm in 2015 as an application specialist titration. Since then, Robert has become an expert in applied titration sharing his expertise through the global network of Metrohm subsidiaries.
</blockquote>

Metrohm - The Basics of Titration Demonstrated and Explained

The Basics of Titration Demonstrated and Explained

Introduction to the basics of titration and performing a titration step by step on a modern, automatic titrator with a photometric or an electrochemical sensor.

Join us as we delve into the essential principles of Capillary Electrophoresis (CE) and explore its diverse applications across various scientific disciplines. Our industry expert Nandakumar Sundaramoorthy, Ph.D. will share valuable insights and practical knowledge to enhance your understanding of CE.
<h5>Discussion points:</h5>
<ul>
<li>CE and CE-MS: general theory, instrumentation and it&#39;s classification, applications and therapeutic areas</li>
<li>Significance of CE in the world of biotherapeutics and other bio-related products</li>
<li>Breakthrough of CE-based separation in novel biologics</li>
<li>Case study: CE-SDS and cIEF/CZE related problems, root cause and solutions</li>
<li>Quality control, regulatory expectations, and pharmacopeial evolution for CE-based methods</li>
</ul>
<blockquote>
Presenter: Dr. Nandakumar Sundaramoorthy
</blockquote>
<blockquote>
He is a scientific professional with nearly two decades of global experience, holding a Ph.D. in Applied Proteomics. He is currently the Director - Analytical Development and Characterization at Kemwell Biopharma Pvt Ltd. He has a proven track record of successfully leading end-to-end projects, specializing in protein characterization.
</blockquote>

SCIEX: Fundamentals of capillary electrophoresis (CE)

Fundamentals of capillary electrophoresis (CE)

Seznamte se s námi se základními principy kapilární elektroforézy (CE) a prozkoumejte její rozmanité aplikace v různých vědních oborech.

Gel permeation chromatography (GPC), also known as size exclusion chromatography (SEC), is a powerful analytical technique for macromolecule-related research and applications. GPC/SEC plays a pivotal role in the chemical industry, offering insights into the molecular weight distribution of polymers.
In this webinar, our expert speakers will outline basic theory and the principle of method development, and will provide a practical guide on column selection. Furthermore, the presentation will also discuss the limitations of GPC/SEC and the factors contributing to abnormal size exclusion behaviors using real industrial application examples.
Join us as we navigate the world of GPC/SEC, shedding light on its principles, practices, and its indispensable role in polymer research in industry.
Key learning objectives
<ul>
<li>Learn about basic theory of GPC/SEC</li>
<li>Explore the principle of GPC method development</li>
<li>Discover GPC/SEC column selection</li>
<li>Consider the limitations of GPC/SEC</li>
</ul>
Who should attend?
<ul>
<li>Polymer scientists</li>
<li>Food scientists</li>
<li>Environmental scientists</li>
<li>Pharma/biopharma researchers</li>
<li>Principle investigators</li>
<li>Laboratory managers and technicians/technologists</li>
</ul>
<h4>View other webinars in this series here:</h4>
<ul>
<li>Part 2: <a href="https://lcms.labrulez.com/webinar/3691">Detection in Gel Permeation Chromatography /Size Exclusion Chromatography</a>
</li>
<li>Part 3: <a href="https://lcms.labrulez.com/webinar/3692">Characterization of Macromolecules by SEC-Light Scattering</a>
</li>
<li>Part 4: <a href="https://lcms.labrulez.com/webinar/3693">Concepts, Challenges and Applications for 2D-LC of Polymers</a>
</li>
</ul>
Certificate of attendance
All webinar participants can request a certificate of attendance, including a learning outcomes summary, for continuing education purposes.
<blockquote>
Presenter: Adrian Williams (Product Marketing, GPC/SEC Consumables, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Adrian Williams holds a BSc (Hons) degree in Applied Chemistry from Wolverhampton University, UK. He currently works in Product Marketing for GPC/SEC consumables at Agilent Technologies. Prior to this, he worked at Polymer Standards Service (PSS) GmbH in Mainz, Germany (now a part of Agilent Technologies) for 12 years. He also worked at Polymer Laboratories Ltd. (later Varian and Agilent Technologies) for 28 years, specializing in polymer characterization using GPC/SEC.
</blockquote>
<blockquote>
Presenter: Dr. Wei Gao (R&amp;D/TS&amp;D Fellow, Dow Inc.)
</blockquote>
<blockquote>
Dr. Wei Gao is an R&amp;D/TS&amp;D Fellow at the Dow Chemical Company. She received her PhD in Polymer Chemistry and Physics from Peking University. Her research interests are polymer and particle characterization, the synthesis-structure-property relationship of polymeric and colloidal systems, and sustainable polymers. She has organized multiple symposia at ACS national meetings and co-edited an ACS Symposium series book. Wei has 50+ peer review publications and 13 granted patents with Dow.
</blockquote>
<blockquote>
Presenter: Jemima Arnold (Editorial Assistant, SelectScience)
</blockquote>
<blockquote>
Jemima studied Cellular and Molecular Medicine at the University of Bristol, UK, and as a member of the Editorial team, she now plays an integral role in shaping the content on SelectScience.
</blockquote>

SelectScience: Unraveling the Intricacies of Size Exclusion Chromatography – Strength and Limitations

Unraveling the Intricacies of Size Exclusion Chromatography – Strength and Limitations

Join us as we navigate the world of GPC/SEC, shedding light on its principles, practices, and its indispensable role in polymer research in industry.

Unraveling the Intricacies of Size Exclusion Chromatography

Size exclusion chromatography (SEC), also known as gel permeation chromatography (GPC) is a powerful technique for analyzing the molecular weight and structure of polymers. Concentration detection is an essential component of GPC/SEC, as it allows for the determination of sample concentration at each point in the elution process. This information is used to calculate the molecular weight of the polymer.
In this webinar, our expert speakers will discuss the benefits and challenges associated with using conventional concentration detectors such as refractive index detectors. In addition, they will discuss and critique the use of the evaporative light scattering detector (ELSD) for polymer characterization. Finally, they will describe its use in conjunction with other detectors such as viscometers and light scattering detectors to provide a comprehensive study of the polymer.
Key learning objectives
<ul>
<li>Understand the use of concentration detectors in GPC/SEC</li>
<li>Discover the benefits and challenges associated with refractive index detectors</li>
<li>Learn what advantages an ELSD can bring to the characterization of macromolecules</li>
</ul>
Who should attend?
<ul>
<li>Polymer scientists</li>
<li>Polymer engineers</li>
<li>Polymer analysts</li>
<li>Plastic technologists</li>
<li>Macromolecular scientists/technicians</li>
</ul>
<h4>View other webinars in this series here:</h4>
<ul>
<li>Part 1: <a href="https://lcms.labrulez.com/webinar/3690">Unraveling the Intricacies of Size Exclusion Chromatography – Strength and Limitations</a>
</li>
<li>Part 3: <a href="https://lcms.labrulez.com/webinar/3692">Characterization of Macromolecules by SEC-Light Scattering</a>
</li>
<li>Part 4: <a href="https://lcms.labrulez.com/webinar/3693">Concepts, Challenges and Applications for 2D-LC of Polymers</a>
</li>
</ul>
Certificate of attendance
All webinar participants can request a certificate of attendance, including a learning outcomes summary, for continuing education purposes.
<blockquote>
Presenter: Dr. Miroslav Janco (Principal Research Scientist, Dow Inc.)
</blockquote>
<blockquote>
Dr. Miroslav Janco is a principal research scientist in the Analytical Sciences team of Core R&amp;D at Dow Chemical. His research is focused on separation and characterization of polymers by GPC/SEC, HPLC, and LC CAP modes using conventional (RI, UV, ELSD) and enhanced detections (LS, VIS) as well as coupled (2D-LC) and online hyphenated techniques (LC-ICP/MS, LC-NMR). He has advanced these capabilities for elucidation of structural heterogeneity in synthetic polymers and the establishment of process-structure-property relationships. His latest contribution to the field of polymer separation and characterization is the development of advanced polymer chromatography.
</blockquote>
<blockquote>
Presenter: Dr. Stephen O’Donohue (Site Director, Agilent Technologies Inc.)
</blockquote>
<blockquote>
Stephen O’Donohue is the site director for the Agilent Gel Permeation Chromatography specialty detector group based in Shropshire, UK. With over 35 years of experience in the industry, designing and developing concentration and molecular weight sensitive detectors for Polymer Laboratories, Varian, and now Agilent, he has developed a strong knowledge of macromolecular characterization by GPC.
</blockquote>
<blockquote>
Presenter: Jemima Arnold (Editorial Assistant, SelectScience)
</blockquote>
<blockquote>
Jemima studied Cellular and Molecular Medicine at the University of Bristol, UK, and as a member of the Editorial team, she now plays an integral role in shaping the content on SelectScience.
</blockquote>

SelectScience: Detection in Gel Permeation Chromatography / Size Exclusion Chromatography

Detection in Gel Permeation Chromatography / Size Exclusion Chromatography

We will discuss the benefits and challenges associated with using conventional concentration detectors such as refractive index detectors.

Detection in GPC/SEC

Event Program
<ul>
<li>Introduction</li>
<li>Temperature effects on sensors</li>
<li>Temperature effects on buffers/solutions</li>
<li>Temperature compensation on the part of the sensor</li>
<li>Temperature compensation on the part of the buffers</li>
<li>Summary</li>
<li>Q&amp;A and feedback</li>
</ul>
The temperature plays a critical role in pH measurements. Achieving accurate pH values is not only about the chemical composition of a solution but also about understanding the impact of temperature fluctuations. Temperature can significantly influence the behavior of pH electrodes and the characteristics of the sample, making it essential to understand its effects on pH measurements. Challenges arise when temperature differentials between the electrode and the sample lead to unstable readings, highlighting the need for a deeper understanding of temperature&#39;s influence on pH.
During our webinar, you will learn about the relationship between temperature and pH. From the temperature dependence of the dissociation constant of water to the impact of temperature on the activity coefficient and acid constants, we will see the complexities of temperature effects on pH measurements. Understanding these nuances can help you enhance the accuracy and reliability of your pH measurements, ensuring precise results across diverse temperature conditions.
Register now for our upcoming webinar to gain valuable insights into the effect of temperature on pH and deepen your understanding of this relationship. Join us and gain the knowledge to optimize your pH measurements and achieve consistent, reliable results.
<h5>How does temperature affect pH measurements?</h5>
Temperature can significantly impact pH measurements by altering the behavior of pH electrodes and the characteristics of the sample. Temperature changes can cause the pH electrode to drift until the temperature of the electrode and the sample become equal, leading to unstable readings. Additionally, the temperature dependence of the dissociation constant of water and the solution&#39;s activity coefficient and acid constants can cause changes in the H+ concentration and real pH value changes.
<h5>How can I compensate for temperature effects on pH measurements?</h5>
Temperature compensation tables have been determined for standard buffer solutions, which can be programmed into pH meters to ensure the correct pH value is used for the buffer at the temperature at which the calibration is performed. However, it is almost impossible to compensate for the temperature coefficient of every sample solution, making it essential to measure samples at the same temperature to make accurate comparisons.
<h5>What are the best practices for handling pH electrodes in temperature-sensitive environments?</h5>
To ensure accurate pH measurements in temperature-sensitive environments, it is crucial to use the correct pH electrode for the specific sample and give the electrode enough time to equilibrate and to maintain the electrode properly.
When measuring in samples that do not consist of easy-to-measure clear, aqueous solutions, problems of electrical or chemical origin can occur, which should be addressed by following the manufacturer&#39;s instructions for electrode handling and maintenance.
<blockquote>
Presenter: Dr Reena Mascarenhas
</blockquote>
<blockquote>
Reena is an electrochemist, working for METTLER TOLEDO, with over five years of experience in training others in various aspects of the field. Her in-depth understanding, technical expertise, and engaging and informative training style make her a prominent speaker for this webinar.
</blockquote>

LCMS webinars focusing on Academy/Principles - page 19

Temperature Effects on pH Measurement