Per- and polyfluoroalkyl substances (PFAS) have become a major global concern due to their persistence, bioaccumulation, and potential health impacts. With thousands of known PFAS compounds, and new variants continuing to emerge, identifying and quantifying them across complex environmental and biological samples is an ongoing analytical challenge.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_From_Complexity_to_Clarity_Smarter_PFAS_Identification_Workflows_in_Compound_Discoverer_Software_2_8e83167891.jpg" alt="Thermo Fisher Scientific: From Complexity to Clarity: Smarter PFAS Identification Workflows in Compound Discoverer Software" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_From_Complexity_to_Clarity_Smarter_PFAS_Identification_Workflows_in_Compound_Discoverer_Software_2_8e83167891.jpg 245w," sizes="100vw" width="1024" height="574"><h3>Why PFAS analysis matters</h3>PFAS are used in everything from firefighting foams to non-stick coatings, yet their chemical stability means they persist in the environment and accumulate in living organisms. Regulators and scientists around the world are racing to better understand their distribution, fate, and toxicity.But with tens of thousands of PFAS, many without available reference standards, traditional targeted analysis alone isn’t enough. Analysts increasingly rely on non-targeted analysis (NTA) workflows powered by high-resolution accurate-mass (HRAM) mass spectrometry and advanced software to uncover the full picture.<h3>Addressing the challenges of PFAS identification</h3>Successful non-targeted PFAS analysis requires overcoming several analytical hurdles:<ol><li>Acquiring high-quality MS¹ and MS² data with ultra-high mass resolution and accuracy.</li><li>Detecting low-abundance PFAS hidden within thousands of background compounds.</li><li>Leveraging comprehensive spectral libraries and databases for confident identification.</li><li>Applying data filtering and scoring tools to assign confidence levels to annotations.</li><li>Using visualization and statistical tools to interpret and compare complex datasets.</li></ol><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1759">Thermo Scientific Compound Discoverer 3.5 software </a>brings together all the components needed for robust PFAS identification—integrating <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=22&amp;manufacturerItems=3">HRAM Orbitrap MS</a> data with an expanded suite of PFAS-specific libraries and databases.In a single workflow, users can:<ul><li>Detect and annotate compounds automatically from LC-MS data.</li><li>Determine possible elemental formulas using isotope pattern and accurate mass information.</li><li>Compare MS² spectra against <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1764">mzCloud</a>, NIST 2023, and in silico PFAS libraries.</li><li>Cross-reference annotations with the EPA PFAS Structure List and the NIST Suspect List of PFAS.</li><li>Use PFAS-specific fragment and neutral loss databases to strengthen identification confidence.</li></ul>With these resources combined, the software enables confident annotation of more than 40,000 PFAS compounds!<h3>New tools for confident, streamlined PFAS identification</h3>Compound Discoverer software introduces several new features designed to simplify and accelerate PFAS NTA workflows:<ul><li>Apply PFAS Scoring Node: Automatically calculates PFAS-specific parameters and a new PFAS Score—no R scripting required.</li><li>PFAS Plot: A visual tool that uses mass-defect metrics to highlight probable PFAS in complex datasets, following methods from Kaufman et al. (2022).</li><li>Expanded suite of libraries and databases: Combines mzCloud, NIST, in silico, PFAS fragment databases, and a new neutral loss database for greater confidence.</li><li>Advanced data visualization: Tools like Kendrick Mass Defect and Molecular Network plots reveal homologous PFAS series and related compound families.</li><li>Built-in statistical analysis tools: Compare PFAS composition between samples using Principal Component Analysis, Differential analysis and Hierarchical Cluster Analysis.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_From_Complexity_to_Clarity_Smarter_PFAS_Identification_Workflows_in_Compound_Discoverer_Software_ed32c7f7c1.jpg" alt="Thermo Fisher Scientific From Complexity to Clarity Smarter PFAS Identification Workflows in Compound Discoverer Software" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_From_Complexity_to_Clarity_Smarter_PFAS_Identification_Workflows_in_Compound_Discoverer_Software_ed32c7f7c1.jpg 245w," sizes="100vw" width="800" height="395"><h3>From complexity to clarity</h3>By uniting Orbitrap HRAM data with the most comprehensive PFAS libraries available, Compound Discoverer 3.5 software streamlines non-targeted PFAS analysis—helping laboratories move from data complexity to confident chemical clarity.<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5612">Watch the on-demand webinar</a> to see the full workflow in action and learn how Compound Discoverer software can enhance your PFAS analysis.<ul><li>Visit us on&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/showcase/72003132/admin/dashboard/">LinkedIn:</a>&nbsp;#PFAS #CompoundDiscoverer #SpectralLibraries</li></ul><blockquote><h5>Zoe Julian</h5>Zoe Julian is a Product Marketing Manager for Chromatography and Mass Spectrometry software at Thermo Fisher Scientific. With over 12 years' experience of working with chromatography and mass spectrometry techniques with a background in GC and GC-MS(/MS) organic environmental analysis, she has helped many laboratories and industries improve their workflows through a unique understanding of their challenges. Transitioning to a focus on Chromeleon CDS she has shown customers how software solutions can improve their productivity and support their day-to-day operations.</blockquote>

From Complexity to Clarity: Smarter PFAS Identification Workflows in Compound Discoverer Software

<h3>Two Dimensions, One Solution: Advancing Oligonucleotide Analysis with 2D-LC</h3><h4>Why Consider 2D-LC for Oligonucleotide Analysis?</h4>In oligonucleotide analytics, achieving reliable and precise results is not optional—it is fundamental. These biomolecules are inherently complex, often containing truncated sequences, structural variants, and a wide range of impurities. Such complexity frequently exceeds the separation capabilities of conventional one-dimensional liquid chromatography (1D-LC). As a result, critical components may coelute or remain unresolved, limiting analytical confidence.Two-dimensional liquid chromatography (2D-LC) offers a powerful alternative by significantly enhancing separation performance. By combining two complementary separation mechanisms, 2D-LC improves resolution, sensitivity, and overall analytical reliability. This enables a much deeper understanding of oligonucleotide samples and their compositional intricacies.<blockquote><h4>Previous parts from the Oligos Made Easy series</h4><ul><li>Part 1: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6808">Overview</a></li><li>Part 2: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6846">AEX</a></li><li>Part 3: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6880">IP-RP</a></li><li>Part 4: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6912">HILIC</a></li><li>Part 5: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6944">SEC</a></li><li>Part 6: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6982">Column Navigator</a></li><li>Part 7: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/7012">Large Scale AEX</a></li><li>Part 8: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/7045">Sepapure oliGO</a></li></ul></blockquote><h4>Moving Beyond the Limits of 1D-LC</h4>For many years, 1D-LC has served as a standard tool for biopharmaceutical characterization. However, its inherent limitations become apparent when dealing with highly complex mixtures. The selectivity of a single chromatographic dimension is restricted, and the lack of orthogonality in retention mechanisms often results in insufficient separation. As sample complexity increases, the resolving power of 1D-LC becomes inadequate.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_1_2_D_LC_Principle_Graphic_by_KNAUER_43e04d32a2.jpg" alt="KNAUER: Figure 1 - 2D-LC Principle (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_1_2_D_LC_Principle_Graphic_by_KNAUER_43e04d32a2.jpg 245w," sizes="100vw" width="1291" height="391">Two-dimensional LC addresses these limitations by coupling two chromatographic separations, which can be either similar or fundamentally different. Each dimension targets different physicochemical properties of analytes, enabling the resolution of compounds that would otherwise overlap. In essence, 2D-LC introduces an additional level of separation capacity, allowing analysts to disentangle coeluting species that remain unresolved in a single dimension.An important practical consideration is that the overall analysis time is governed by the second dimension. Because fractions from the first dimension must be processed sequentially, the second dimension must operate rapidly and efficiently. High-speed separations in the second dimension are therefore essential to maintain system performance and data quality.<h4>Architecture of a 2D-LC System</h4>At its core, a 2D-LC system relies on precise coordination between its components. The setup typically consists of two chromatographic columns, two pumping systems, and a switching valve that enables fraction transfer between dimensions. The sample is introduced through an autosampler and first separated on the primary column. Fractions of interest are then transferred into a loop via a switching valve and subsequently introduced into the second column for further separation.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_2_2_D_LC_System_Configuration_Example_Graphic_by_KNAUER_f5747adf3a.jpg" alt="KNAUER: Figure 2 - 2D LC System Configuration Example (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_2_2_D_LC_System_Configuration_Example_Graphic_by_KNAUER_f5747adf3a.jpg 245w," sizes="100vw" width="859" height="517">The valve plays a crucial role in this process, acting as the interface between both chromatographic dimensions. Its function is to alternately collect fractions from the first dimension and inject them into the second dimension under high-pressure conditions. Various valve configurations can be employed, including ten-port or eight-port valves with dual-loop arrangements, or synchronized six-port valves. Regardless of configuration, the underlying principle remains the same: while one loop is being filled, the other is being flushed into the second dimension.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_3_Schematic_figure_of_ten_port_left_and_eight_port_valve_right_2_position_setup_for_2_D_LC_Graphic_by_KNAUER_9209661ea8.jpg" alt="KNAUER: Figure 3 - Schematic figure of ten-port (left) and eight-port valve (right) 2-position setup for 2D-LC (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_3_Schematic_figure_of_ten_port_left_and_eight_port_valve_right_2_position_setup_for_2_D_LC_Graphic_by_KNAUER_9209661ea8.jpg 245w," sizes="100vw" width="1287" height="406">This alternating process requires precise timing. The second-dimension separation must be completed before the next fraction is ready for transfer. Consequently, synchronization between flow rates, loop volumes, and switching intervals is essential for maintaining chromatographic integrity.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_4_Schematic_figure_KNAUER_eight_port_2_position_valve_for_2_D_LC_Graphic_by_KNAUER_f9a5f06f5f.jpg" alt="KNAUER: Figure 4 - Schematic figure KNAUER eight-port 2 position valve for 2D-LC (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_4_Schematic_figure_KNAUER_eight_port_2_position_valve_for_2_D_LC_Graphic_by_KNAUER_f9a5f06f5f.jpg 245w," sizes="100vw" width="756" height="391"><h4>Applying 2D-LC to Oligonucleotide Analysis</h4>In oligonucleotide workflows, 2D-LC combines two complementary separation strategies to address sample complexity. The first dimension is typically used for bulk separation based on properties such as size, charge, or polarity. Techniques such as size-exclusion chromatography (SEC), anion-exchange chromatography (AEX), ion-pair reversed-phase chromatography (IP-RP), hydrophilic interaction chromatography (HILIC), or mixed-mode chromatography (MMC) are commonly applied. This step reduces sample complexity and can also serve as an online desalting stage, removing salts and buffer components that could interfere with downstream detection, particularly when mass spectrometry is used.Following this initial separation, selected fractions are transferred to the second dimension. This transfer can be performed either selectively or comprehensively, depending on the analytical goal. The second dimension is typically optimized for high-resolution separation, allowing detailed characterization of closely related species such as truncated oligonucleotides, sequence variants, or chemically modified impurities. When coupled with mass spectrometry, this setup enables accurate identification and sequencing.A key advantage of 2D-LC lies in the flexibility of combining different stationary phases and mobile phase conditions.&nbsp;Numerous separation combinations are possible, including:<ul><li>SEC×AEX</li><li>HILIC×IP-RP</li><li>IEC×IP-RP</li><li>IP-RP×IP-RP</li><li>AEX×HIC</li><li>MMC×SEC,</li><li>and even chiral×RP systems.&nbsp;</li></ul>This adaptability allows tailored workflows for specific analytical challenges.<h4>Heart-Cutting vs. Comprehensive 2D-LC</h4>When implementing 2D-LC, two primary transfer strategies are commonly used: heart-cutting and comprehensive transfer. Each approach offers distinct advantages depending on the analytical objective.Heart-cutting 2D-LC focuses on selected regions of interest from the first dimension. Only specific peaks or time windows are transferred to the second dimension for further analysis. This approach allows extended separation time and higher resolution in the second dimension, making it particularly suitable for targeted investigations of known critical compounds. However, because only selected fractions are analyzed, unexpected impurities outside the selected region may remain undetected.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_5_2_D_LC_Single_Heart_Cut_Principle_Graphic_by_KNAUER_b1b400784b.jpg" alt="KNAUER: Figure 5 - 2D-LC Single Heart-Cut Principle (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_5_2_D_LC_Single_Heart_Cut_Principle_Graphic_by_KNAUER_b1b400784b.jpg 245w," sizes="100vw" width="1276" height="319">In contrast, comprehensive 2D-LC transfers the entire eluate from the first dimension into the second dimension in a continuous manner. This approach provides a complete and detailed representation of the sample, making it ideal for research and development, impurity profiling, and regulatory applications. While more demanding in terms of speed and system performance, comprehensive 2D-LC ensures full sample coverage.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Figure_6_Full_Comprehensive_2_D_LC_Principle_Graphic_by_KNAUER_e13da63ef1.jpg" alt="KNAUER: Figure 6 - Full Comprehensive 2D-LC Principle (Graphic by KNAUER)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Figure_6_Full_Comprehensive_2_D_LC_Principle_Graphic_by_KNAUER_e13da63ef1.jpg 245w," sizes="100vw" width="1327" height="292">In practice, hybrid approaches may also be employed, combining targeted heart-cutting with broader comprehensive analysis to balance resolution and coverage.<h4>Practical Considerations for Method Development</h4>Successful implementation of 2D-LC for oligonucleotide analysis requires careful method design.&nbsp;<h5>1. Column selection&nbsp;</h5>It is a critical starting point, as the combination of stationary phases must provide sufficient orthogonality while maintaining compatibility between mobile phases. Typically, the first dimension is optimized for general separation of oligonucleotide size or class, while the second dimension focuses on sequence-specific resolution and compatibility with mass spectrometry.<h5>2. Mobile phase selection&nbsp;</h5>Differences in pH and organic modifiers can significantly influence separation behavior, but incompatibility between dimensions can compromise performance. Therefore, mobile phases must be designed as a coordinated system. The use of volatile buffers, such as ammonium acetate, is often preferred for MS-based detection.<h5>3. Instrumentation&nbsp;</h5>The switching valve must operate reliably under high pressure, with precise timing to ensure accurate fraction transfer. Loop volumes must be carefully selected to avoid overfilling, as excessive loading can lead to sample loss and distortion due to flow profile effects. As a general guideline, loops should not be filled beyond approximately 70% of their capacity.<h5>4. Method development&nbsp;</h5>Typically begins with optimization of the second dimension, as it dictates overall system timing. Fast separations using short columns and steep gradients are often required to maintain sufficient sampling frequency. Once the second dimension is established, the first dimension can be adjusted to achieve optimal resolution and compatibility.<h4>Final Remarks</h4>Two-dimensional liquid chromatography represents a powerful advancement in oligonucleotide analysis, enabling the resolution of complex mixtures that exceed the capabilities of conventional 1D approaches. By combining orthogonal separation mechanisms, 2D-LC reveals structural details and impurity profiles that would otherwise remain hidden.However, achieving optimal performance requires careful balancing of multiple factors, including column chemistry, mobile phase compatibility, system timing, and data acquisition. When properly implemented, 2D-LC provides a robust and highly informative platform for modern oligonucleotide characterization.<blockquote><ul><li>If you're planning to set up or optimize your oligonucleotide workflow, feel free to contact us at <a href="sales@knauer.net">sales@knauer.net</a>. Stay tuned for more exciting insights into the Oligonucleotide world in our “Oligos Made Easy” series.</li><li>For more in-depth discussion or questions, reach out to the author at <a href="kindler@knauer.net">kindler@knauer.net</a></li></ul></blockquote>

Oligos Made Easy - Part 9: 2D-LC

News from LabRulezLCMS Library - Week 14, 2026

Software

Article

Product

Application

Academy

Video

A unique company dedicated to serving science helping our customers drive productivity and accelerate results. Through our premier brands – Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific and Unity Lab Services.

Thermo Fisher Scientific

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

LabRulez

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

KNAUER

Separation Science

Agilent Technologies

SelectScience

C&EN

Waters Corporation

Chromatography can be complicated. Sample preparation is important, but not always used correctly. This webinar will cover some unexpected problems and solutions to generate better data. We will cover topics including peak shape, ghost peaks, tailing peaks, split peaks, missing peaks, variable retention times, high backpressure, instrument contamination, and ion suppression.
We will go over strategies for cleaning up your sample, protecting your column and instrument from sample matrix contamination, and getting reliable, reproducible, and accurate results from your chromatography.
<blockquote>
Presenter: Alex Ucci (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
In his current position at Agilent, Alex provides application assistance and technical support for sample preparation products as well as GC and LC consumables. Before he joined Agilent in 2014, Alex was a graduate student at the Pennsylvania State University researching the morphology and surface properties of aerosol particles using a wide variety of analytical techniques. He has an MS degree in chemistry.
</blockquote>

Agilent Technologies: Techniques for Avoiding Unexpected Problems in LC and GC Analysis

Techniques for Avoiding Unexpected Problems in LC and GC Analysis

Peak shape, ghost peaks, tailing peaks, split peaks, missing peaks, variable retention times, high backpressure, instrument contamination, and ion suppression.

Techniques for Avoiding Unexpected Problems in LC and GC

Join us for this two-part webinar series where we will share successful techniques to effectively improve lab-scale HPLC purification to isolate and purify important target compounds.
There is a continuous demand for sufficient yields of high-purity compounds in research and development. Whether compounds are synthesized target molecules, isolated natural product bioactives, or an unknown impurity from an API synthesis, target compound diversity brings new challenges for LC purification. This requires scientists to have a greater understanding of how-to better leverage HPLC for achieving purification outcomes in lab-scale target clean up. With purity requirements and accelerated project timelines, understanding best approaches for preparative separations is valuable to meeting these objectives. We will discuss practical techniques and tools for improving your effectiveness in lab-scale HPLC purifications. 
Additionally, we will explore successful approaches to achieving purity and yields at first try, and ways to be more efficient and confident in isolating and purifying important target compounds.
Key Learnings from this series include:
<ul>
<li>Gain insights for applying simple techniques to improve lab-scale purifications
</li>
<li>Learn to scale your analytical – prep workflows predictably
</li>
<li>For problematic targets, gain confidence choosing successful strategies to meet purification goals
</li>
<li>Boost preparative workflow efficiency using Waters OBD columns
</li>
</ul>
Who Should Attend?
<ul>
<li>Scientists performing mg scale isolation and purification workflows
</li>
<li>Medicinal and Synthetic Chemists in Pharmaceutical &amp; Academia
</li>
<li>Scientists, novices to experts, using HPLC for lab-scale purification of target molecules
</li>
</ul>
<blockquote>
Presenter: Kathy Lawrence (Sr. Product Marketing Manager, Waters Corporation)
</blockquote>
<blockquote>
Kathy Lawrence is the Sr. Product Marketing Manager for prep column technologies at Waters Corporation. Early in her career, she was a discovery R&amp;D chemist and a CRO lab manager gaining valuable experience isolating natural products and synthesizing small molecule targets. Later, as Waters North America Purification Specialist, she travelled the continent supporting the success of others purifying targets at various scale. Kathy has held advanced leadership roles in marketing and business development in support of the commercialization of systems, services, and consumables. She holds a Masters degrees in both chemistry and business, is an author of some scientific publication, and is a patented product inventor.
</blockquote>

Waters Corporation: Effective Strategies for Improved Outcomes in LC Purification

Effective Strategies for Improved Outcomes in LC Purification

Successful techniques to effectively improve lab-scale HPLC purification to isolate and purify important target compounds.

Strategies for Improved Outcomes in LC Purification

Per- and polyfluoroalkyl substances (PFAS), also referred to as ‘forever chemicals’, are an increasing concern since they accumulate in the environment and may have some deleterious effects on human health.
In this webinar, Dr. Estelle Riche, Global Application Specialist from Merck KGaA, Darmstadt, Germany, will discuss the importance of reagent water quality in trace analyses of PFAS by LC-MS/MS. Dr. Riche will show data on the efficiency of a lab water purification system at removing traces of PFAS from tap water and delivering ultrapure water suitable for sensitive PFAS testing. This webinar will also offer guidance on how to select an optimal water purification solution for these analyses, including tips on how to prevent water contamination for optimal experimental results.
Key learning objectives
<ul>
<li>Understand the role of reagent water in PFAS analyses by LC-MS/MS
</li>
<li>Discover how water purification technologies play a role in PFAS removal
</li>
<li>Learn how to select the best water purification solution to suit your lab’s needs
</li>
</ul>
Who should attend?
<ul>
<li>Any scientist analyzing or planning to analyze PFAS
</li>
<li>Lab managers and anyone using or maintaining lab water purification systems
</li>
</ul>
<blockquote>
Presenter: Dr. Estelle Riche, PhD (Global Application Specialist, Merck KGaA, Darmstadt, Germany)
</blockquote>
<blockquote>
Dr. Estelle Riche holds an engineering degree in chemistry from ESCOM in France and a Ph.D. in chemistry from the University of North Carolina (UNC) in the USA. She started her career as a Professor at UNC, then joined Merck KGaA, Darmstadt, Germany eighteen years ago. She is currently Global Application Specialist for Lab Water Solutions and her responsibilities include understanding the potential impact of water quality on the results of laboratory analyses.
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<blockquote>
Presenter: Carrie Haslam (SelectScience)
</blockquote>
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Dr. Carrie Haslam is an Associate Editor at SelectScience, playing a key role in content production and specializing in Materials Science, Alzheimer’s disease and Clinical Diagnostics. Carrie completed a Ph.D. from The University of Plymouth, where she developed graphene-based biosensors for the early diagnosis of Alzheimer’s disease.
</blockquote>

SelectScience: Is your lab water pure enough for sensitive PFAS analyses?

Is your lab water pure enough for sensitive PFAS analyses?

The importance of reagent water quality in trace analyses of PFAS by LC-MS/MS.

Join us for an informative webinar where we&#39;ll unveil our innovative in-house method for studying Extractables and Leachables (E&amp;L) substances in common medical and pharmaceutical-grade plastics.
We&#39;ll dive into the analysis of nylon, polyurethane, and PVC (epoxidized soybean oil) oligomers, showcasing our approach that leverages multiple advanced detectors to analyze a wide range of analytes with diverse chemical properties.
Our method incorporates an ingenious inverse gradient technique, fine-tuned with an in-line mixer and optimized gradient delay times. We&#39;ll demonstrate the application of a previously published calculation to determine analyte behavior, classifying them as non-volatiles or semi-volatiles using CAD (Charged Aerosol Detection).
By attending, you&#39;ll discover how our approach minimizes inter-analyte response factor variation, enhancing quantitative accuracy and reducing uncertainty in setting analytical evaluation thresholds. Ultimately, our method is designed to meet crucial requirements in E&amp;L studies, ensuring efficient and cost-effective protection against potentially harmful substances. Don&#39;t miss this opportunity to stay at the forefront of E&amp;L research.
Learning points:
<ul>
<li>determine which analytes behave as non-volatiles with CAD and can therefore be accurately quantified using surrogate standards
</li>
<li>improve quantification accuracy and reduce response factor variation using an inverse gradient
</li>
<li>use an in-line mixer to combine the analytical and inverse gradients and improve response uniformity
</li>
</ul>
Who should attend:
<ul>
<li>Laboratory managers and directors
</li>
<li>Technology leaders 
</li>
<li>Principal scientists 
</li>
<li>Laboratory analyst
</li>
</ul>
<blockquote>
Presenter: Katherine Lovejoy (Product Applications Specialist, Thermo Fisher Scientific)
</blockquote>
<blockquote>
Katherine Lovejoy, Ph.D. has been an application chemist focusing on charged aerosol detection at the Thermo Fisher Scientific HPLC factory site since 2016 and has a Ph.D. in inorganic chemistry from the Massachusetts Institute of Technology. She has experience as a chemist reviewer at the FDA and as a scientist at Los Alamos National Laboratory.
</blockquote>
<blockquote>
Presenter: Chris Tuczemskyi (Moderator, Product Marketing Manager, Thermo Fisher Scientific)
</blockquote>
<blockquote>
Chris Tuczemskyi is a chromatography specialist at Thermo Fisher Scientific, based in Cambridge, UK. After spending a number of years building up his experience with chromatography instruments in a water testing laboratory, he joined Thermo Fisher Scientific in 2014 as a chromatography service engineer for Unity Lab Services. Here he developed his passion for supporting customers using HPLC and in 2018 moved into the application specialist team. More recently, in 2022 he made the move to Product Marketing to help ensure we meet and exceed our customers expectation. In 2009, Chris graduated from the University of Essex in Biochemistry (Bsc Hons).
</blockquote>

Thermo Scientific: How HPLC-CAD Analysis Can Allow You to See Hidden Extractable Oligomers

How HPLC-CAD Analysis Can Allow You to See Hidden Extractable Oligomers

Innovative in-house method for studying Extractables and Leachables (E&L) substances in common medical and pharmaceutical-grade plastics.

How HPLC-CAD Analysis Can Allow You to See Hidden Oligomers

Solid-Phase Extraction (SPE) is a fundamental sample preparation technique widely used across all areas of analytical chemistry.
Whether new to SPE or seeking a refresher, this webinar will introduce the basics of sample preparation and provide practical insights and technical background on the benefits when choosing SPE over another form of sample preparation, especially for analytes in complex matrices. Join us in exploring SPE retention mechanisms, device format and sorbent selection, and best practices for implementing successful SPE methods. This webinar is designed for both beginners and experienced scientists looking to reinforce their understanding of this sample clean-up tool.
Learning Objectives Include:
<ul>
<li>Understanding SPE Fundamentals
</li>
<li>Optimizing SPE by Selecting an Appropriate Sorbent, Format, and Protocol
</li>
<li>Verifying Successful SPE Implementation and Troubleshooting Tips
</li>
</ul>
<blockquote>
Presenter: Chelsea Plummer (Senior Product Marketing Manager, Waters Corporation)
</blockquote>
<blockquote>
Chelsea Plummer, PhD is a Senior Product Marketing Manager with a background in bioanalytical mass spectrometry. Graduating from Purdue University and The University of Alabama, her research focused on analysis of small molecules and peptides by both quantitative and high resolution MS. At Waters, Chelsea has supported customers across product specialist roles in both consumables and mass spectrometry. Later moving to Waters’ product team, she now covers sample preparation, particularly focused on solid-phase extraction products for use in bioanalysis, food, and environmental applications. Chelsea enjoys working closely with the scientific team at Waters to provide customers with helpful sample preparation solutions.
</blockquote>

Waters Corporation: Solid-Phase Extraction: Back to Basics

Solid-Phase Extraction: Back to Basics

Basics of sample preparation and provide practical insights and technical background on the benefits when choosing SPE over another form of sample preparation.

Glycosylation plays a crucial role in determining the pharmacological properties of biotherapeutics. The molecular heterogeneity of glycosylated biotherapeutics makes it difficult to provide thorough characterization of intact glycoproteins by mass spectrometry.
Current methods for analyzing biotherapeutics only measure fragments of the compound or rely on partial digestion of the glycans to reduce sample complexity. These limitations pose important risks and challenges for biotechnology companies that need to report human-compatible and consistent glycosylation, critical for drug safety and efficacy. 
We will present a new approach to glycoform fingerprinting that uses proton-transfer charge-reduction with gas-phase fractionation to analyze intact glycoproteins by mass spectrometry. The method provides a detailed landscape of the intact molecular weights present in biotherapeutic protein preparations in a single experiment and offers insights into glycoform composition when coupled with a suitable bioinformatic strategy. In addition, we highlight the application of charge detection native mass spectrometry (Direct Mass Technology mode) towards the elucidation of masses and aggregation of heterogeneous glycosylated biotherapeutics. 
Key Learning Objectives:
<ul>
<li>How to elucidate masses from heterogeneous glycosylated biotherapeutics 
</li>
<li>Learn how proton transfer charge reduction (PTCR) can simplify complex protein mixtures 
</li>
<li>Learn when to use PTCR based methods compared to Direct Mass Technology mode for analysis of biotherapeutics
</li>
</ul>
Who Should Attend:
<ul>
<li>Laboratory Managers 
</li>
<li>Biopharmaceutical Researchers 
</li>
<li>Protein Scientists
</li>
</ul>
<blockquote>
Presenter: Wendy Sandoval (Director, Translational Mass Spectrometry, Genentech)
</blockquote>
<blockquote>
Presenter: Ann Thayer (Contributing Editor, C&amp;EN Media Group)
</blockquote>

C&EN: Direct Analysis of Glycosylated Therapeutics

Direct Analysis of Glycosylated Therapeutics

New approach to glycoform fingerprinting that uses proton-transfer charge-reduction with gas-phase fractionation to analyze intact glycoproteins.

Choosing the right LIMS is a challenge, but it can be accomplished with sufficient research and strong compatibility between your organization’s needs and the functionality of the software.
Once companies have selected the right LIMS, they will need to embark on the next stage of their journey – implementation. It is imperative that your implementation project is successful and efficient, driven by the strategic partnership and common goals that you and your vendor have established.
In this webinar, we will discuss how to achieve a successful laboratory software installation:
<ul>
<li>Consider resources - a successful project needs key stakeholder involvement. What&#39;s usually expected from a customer? Who should be involved, and how much time will they need to commit?
</li>
<li>What are you looking to solve? You will have thought about this while selecting your solution, but you must revisit this to ensure you stay on track and understand the true scope of your project.
</li>
<li>Key LIMS project management considerations - Keep things simple, know your scope, work in phases. We&#39;ll cover all the common pitfalls of lab software projects and how to avoid them.
</li>
<li>Looking ahead. Your LIMS project doesn&#39;t stop when you go live. How can you ensure ongoing success through the life of your LIMS?
</li>
</ul>
By attending this presentation, you will:
<ul>
<li>learn how to elevate your laboratory with a successful LIMS implementation
</li>
<li>understand the important aspects of the implementation journey
</li>
<li>see how a successful implementation can ensure ongoing success for your organization
</li>
</ul>
<blockquote>
Presenter: Anand Radhakrishnan (Services Manager – Digital Science Solutions, Thermo Fisher Scientific)
</blockquote>
<blockquote>
Anand Radhakrishnan is the Services Manager for the Digital Solutions division at Thermo Fisher Scientific. Anand has an extensive background in customer relations and implementation strategies among life sciences and R&amp;D organizations. He joined Thermo Fisher in 2018 as a Senior Global Customer Success Manager, ensuring implementations of LIMS across customers, and transitioned to a Services Manager leading the Digital Solutions technical implementation team in September 2020. In his current role, he leads a team of specialists as they support technical implementation of LIMS in pharmaceutical, diagnostic, and quality control laboratories to execute the customer’s R&amp;D digital transformation strategy. Anand has a Ph.D. in Biochemistry and Microbiology from the Max Planck Institute for Biophysical Chemistry, an M.Sc in Molecular Biology from the International Max Planck Research School, and a Bachelor’s Degree in Biochemistry from the University of Malaya.
</blockquote>

Separation Science: Elevate your lab: How to manage a successful LIMS implementation

Elevate your lab: How to manage a successful LIMS implementation

How to achieve a successful laboratory software installation.

How to manage a successful LIMS implementation

With the rising clinical and commercial successes of AAV-based gene therapies, there is an ever-growing demand for robust, platform analytical technologies that can help ensure better product quality, safety, and efficacy.
Size exclusion chromatography (SEC) and Field Flow Fractionation (FFF), coupled with multi-angle light scattering technologies (MALS), are rapidly emerging as transformative technologies for rapid and accurate characterization of AAV samples. Critical Quality Attributes (CQAs) such as capsid titer, genome titer, empty/full, % aggregation and purity of various AAV serotypes can all be obtained in a single measurement. This multi-attribute approach dramatically reduces operational costs and reduces drug development timelines. 
Key Learning Objectives:
<ul>
<li>See how SEC-MALS compares to orthogonal techniques (ddPCR, Capsid ELISA’s, and AUC) for the characterization of AAV during various downstream steps 
</li>
<li>Understand how light scattering can be used as a rapid screening tool when working with multiple AAV serotypes 
</li>
<li>Appreciate the value of FFF-MALS for accurate, AAV aggregation analysis
</li>
</ul>
Who Should Attend:
<ul>
<li>Academic researchers involved in biophysical studies 
</li>
<li>Academic researchers involved in gene therapy studies 
</li>
<li>Gene Therapy - Discovery 
</li>
<li>Gene Therapy - Development
</li>
<li>Gene Therapy – QC
</li>
<li>Government researchers involved in gene therapy research
</li>
</ul>
<blockquote>
Presenter: Steven Milian, M.S. (Sr. Staff Scientist, Research &amp; Development Dept. of Patheon (by Thermo Fisher Scientific) Viral Vector Services)
</blockquote>
<blockquote>
Presenter: Gennarino Del Bagno, B.S. (Lead Scientist, Research &amp; Development Dept. of Patheon (by Thermo Fisher Scientific) Viral Vector Services)
</blockquote>
<blockquote>
Presenter: Sophia Kenrick, Ph.D. (Director of Analytical Sciences, Waters|Wyatt Technology)
</blockquote>
<blockquote>
Presenter: Melissa O&#39;Meara (Forensic Science Consultant, C&amp;EN Media Group)
</blockquote>

C&EN: Shining Light on AAVs: Using Light Scattering Technologies to Solve Challenges in Characterization

Shining Light on AAVs: Using Light Scattering Technologies to Solve Challenges in Characterization

See how SEC-MALS compares to orthogonal techniques (ddPCR, Capsid ELISA’s, and AUC) for the characterization of AAV during various downstream steps.

AAVs: Light Scattering Technologies to Solve Challenges

Typical PFAS methods include 18 to 40 individual legacy, short to long chain PFAS compounds. However, as the long chain PFAS have been phased out of industrial uses, they were replaced by short and ultra-short chain versions with similar chemistries, environmental persistence, and toxicological impact. As we continue to assess PFAS impacts in the environment, methods for identifying and quantifying the short and ultra-short chain PFAS are also needed.
Chromatography methods using common reverse phase columns, however, do not retain the ultra-short chain PFAS, so these are not usually included in the current quantitative methods.
We will explore how we can take advantage of the mixed mode chemistry of PFAS molecules to routinely detect and quantify a broad scope of PFAS, including the ultra-short chains to legacy long chain versions, all detected in a single injection, using mixed mode reverse phase and anion exchange separation column chemistries.
<h3>Key Learning Topics:</h3>
<ul>
<li>Improved workflow for a wide range of PFAS compounds</li>
<li>Mixed mode separations using a reverse phase and anion exchange column</li>
<li>Improved analyte identification and data quality</li>
<li>Addressing instrument contamination</li>
</ul>
<h5>Who should attend?</h5>
<ul>
<li>PFAS Program Managers</li>
<li>Laboratory Managers</li>
<li>Scientists</li>
<li>Quality Assurance Managers</li>
</ul>
For more information please contact Jenifer_Lewis@Waters.com or Ravali_Alagandula@Waters.com
<blockquote>
Presenter: Kari Organtini, PhD (Principal Scientist, Waters Corporation)
</blockquote>
<blockquote>
Kari Organtini is a Principal Scientist at Waters Corporation and has been with the company for six years. She received her PhD from Penn State University in 2015 studying the occurrence of dioxins and furans in fire debris and their implications to first responder health. At Waters, Kari is part of the food and environmental applications team. During her career, Kari has developed applications using both LC and GC techniques for a variety of applications ranging from pesticides to persistent organic pollutants. She is currently the scientific lead for developing PFAS applications at Waters.
</blockquote>

LabRulez/AI: To Isolation and Beyond: A New Mixed Mode Column Approach for PFAS Chromatography

To Isolation and Beyond: A New Mixed Mode Column Approach for PFAS Chromatography

We will explore how we can take advantage of the mixed mode chemistry of PFAS molecules to routinely detect and quantify a broad scope of PFAS.

A New Mixed Mode Column Approach for PFAS Chromatography

Whether you are analyzing for food contaminants such as PFAS or pesticide residues, screening for food adulteration in tea, or profiling the flavor of alternative proteins, trusted answers is critical in food testing. Agilent keeps you at the forefront of the latest trends in food testing – so you can deliver the highest quality and value to your customers. Join us in this webinar series as food testing experts from all over the world talk share their robust and reliable workflow solutions to meet the challenges in food safety, authenticity, and quality testing. These experts have allotted ample time for discussion so share your thoughts and bring in your questions!
The webcast will take the audience through the suite of analytical techniques that were utilized to obtain a comprehensive picture of the presence of per-and polyfluoroalkyl substances (PFAS) in selected Canadian food packaging used for fast foods. The levels and profiles of PFAS in the samples can provide valuable information on the sources of these chemicals, especially polymeric ones.
Key Learning Objectives/What attendees will learn:
<ul>
<li>Methodological approach for the analysis of PFAS in packaging materials
</li>
<li>PFAS profiles provide information on sources
</li>
<li>Implications for regulatory purposes
</li>
</ul>
<blockquote>
Presenter: Marta Venier, PhD (Assistant Professor, Paul O’Neill School of Public and Environmental Affairs, Indiana University)
</blockquote>
<blockquote>
Marta Venier is an environmental chemist and Assistant Professor at the Paul O’Neill School of Public and Environmental Affairs at Indiana University in Bloomington, Indiana. In her research she employs analytical chemistry and mass spectrometry techniques to study the fate, transport, and behavior of persistent organic pollutants including both legacy and emerging pollutants in the indoor and outdoor environment and in consumer products. Since November 2019, she has been leading the Integrated Atmospheric Deposition Network (IADN), a monitoring program funded by the U.S. Environmental Protection Agency.
</blockquote>

Agilent Technologies: PFAS in Fast Food Packaging

PFAS in Fast Food Packaging

The suite of analytical techniques that were utilized to obtain a picture of the presence of PFAS in selected Canadian food packaging used for fast foods.