<div><p><strong>Purifying the target protein is crucial for investigating its specific properties and interactions with biomolecules like DNA, RNA, and other proteins. A range of purification strategies is available, and the optimal approach depends on factors such as the required scale, throughput, and downstream application. In many cases, the process must be fine-tuned through empirical optimization to achieve the desired purity and yield.</strong></p></div><div><div><div><div><h3><strong>What is Protein Purification?</strong></h3><p>Protein purification is a critical process in biotechnology and life sciences, aimed at isolating a specific protein from complex biological mixtures such as cell lysates or tissue extracts. The goal is to obtain a highly purified protein sample, free from contaminants like other proteins, nucleic acids, and lipids, to enable accurate analysis of its structure, function, and interactions.</p><p>This process is especially vital in biotechnological areas inside immunology and microbiology. In <strong>immunology</strong>, it underpins the production of vaccines, therapeutic antibodies, and diagnostic assays by enabling the isolation of key immune proteins and antibodies. It also supports the investigation of cell signaling and immune response mechanisms. In <strong>microbiology</strong>, purified proteins are essential for studying pathogens, identifying disease-related antigens, and driving drug discovery efforts. Ultimately, protein purification is fundamental to the development of targeted vaccines, innovative diagnostics, and effective therapeutic strategies.</p></div></div></div></div><div><div><div><div><h3><strong>Types of Protein Purification Methods</strong></h3></div></div></div></div><div><p>There are several types of protein purification methods, each chosen based on the protein’s characteristics such as size, charge, solubility, and binding affinity. Below are some commonly used methods:</p></div><div><div><div><div><h4><strong>Non-Chromatographic Approaches</strong></h4></div></div><div><p>Non-chromatographic approaches use simpler physicochemical principles—such as solubility, molecular size, or diffusional properties—to separate and purify proteins. These techniques are often employed as initial purification or concentration steps before further refinement.</p><h5><strong>Precipitation Techniques</strong></h5><p>Protein precipitation is a widely used approach in purification workflows, typically relying on one of three main methods:</p><ul><li><strong>Organic solvent precipitation</strong> involves adding solvents like ethanol or acetone to lower the solution's dielectric constant. This promotes protein–protein interactions, reducing solubility and leading to aggregation and precipitation.</li><li><strong>Isoelectric point precipitation </strong>exploits the pH at which a protein carries no net charge. At this point, solubility is minimized, causing the protein to precipitate from solution.</li><li><strong>Nonionic polymer precipitation</strong> uses polymers such as dextran, polyethylene glycol (PEG), or NPEP to alter the solution’s physical properties. These agents create crowding effects that promote protein aggregation without directly binding to the proteins.</li></ul><h5><strong>Dialysis</strong></h5><p>Dialysis involves placing a protein solution inside a semi-permeable membrane that allows water and ions to pass while the protein remains inside, facilitating buffer exchange.This method is commonly used during protein expression and purification workflows for buffer exchange, desalting, and removal of unwanted small molecules such as imidazole, urea, or ammonium sulfate. The process helps maintain protein stability and activity by gradually equilibrating the sample with the desired buffer conditions.</p><h5><strong>Immunocapture (Magnetic Bead-Based Purification</strong></h5><p>Immunocapture uses antibodies immobilized on solid supports like magnetic beads to selectively bind and isolate a target protein. This method is highly specific and particularly useful for low-abundance targets or small-scale prep, such as:</p><ul><li>Pulling down proteins from complex mixtures</li><li>Capturing tagged recombinant proteins (e.g., FLAG, HA, or His tags)</li><li>Enrichment before western blotting, MS, or ELISA</li></ul><p>Magnetic beads offer speed, ease of use, and minimal sample loss, making them ideal for lab-scale workflows.</p><p><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/products/biozenspe-sample-preparation-products/biozen-magbeads">Biozen MagBeads</a> provide a fast and efficient method for purifying, isolating, and cleaning up monoclonal antibodies (mAbs), proteins, and peptides. These paramagnetic beads feature a streptavidin-coated surface, enabling high-affinity binding in immuno-based workflows. Compared to traditional sample preparation techniques, magnetic bead-based immunocapture offers greater speed and consistency by delivering high binding capacity with uniform particle size, ensuring accurate and reproducible results in significantly less time.</p><h5><strong>Centrifugation</strong></h5><p>Centrifugation of crude protein mixtures is an essential step in the investigation of protein purification and aggregation. Outlined below are the various types of centrifugations employed in protein purification.</p><p><strong>Preparative Ultracentrifugation</strong><br>Ultracentrifugation is an effective method of purifying proteins from aggregates based on their size, shape and density. Centrifugation, widely recognized as a robust and versatile method, is commonly used to separate complex mixtures of cellular components. Ultracentrifuges separate small particles by spinning at high speeds, utilizing centrifugal force based on size and density.</p><p><strong>Differential Centrifugation</strong><br>Differential centrifugation operates by separating components based on differences in size and density, using varying speeds of centrifugation to achieve this. Its resolving power ranges from low to medium. A key advantage of this technique is its convenience for processing multiple samples simultaneously, making it effective for purifying crude samples. Additionally, it preserves cell viability and maintains the natural distribution of hematopoietic cell populations.</p><p><strong>Rate-zonal Gradient Centrifugation</strong><br>This technique separates components based on their sedimentation rate within a medium that contains a density gradient. It offers medium resolving power and is particularly effective for separating multiple components in complex mixtures with high precision. It is also considered a cost-effective and widely used technique in molecular biology and biochemistry.</p><p><strong>Isopycnic Centrifugation (Equilibrium Centrifugation)</strong><br>Isopycnic centrifugation is an advanced protein purification method that relies on the principle of separating particles according to their intrinsic buoyant density, irrespective of their size or morphology. During the process, proteins migrate through a density gradient until they equilibrate at a position where their density matches that of the surrounding medium, resulting in precise separation without further sedimentation.</p></div></div></div><div><div><div><div><h4><strong>Chromatographic Approaches</strong></h4><p>Chromatography is a common method of protein purification and is based on the separation of molecules in a mixture as they move through a stationary phase and a mobile phase. Outlined below are the various types of chromatography employed in protein purification.</p><h5><strong>Ion Exchange Chromatography</strong></h5><p><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/techniques/hplc-ion-exchange">Ion exchange chromatography</a> relies on the interaction between a charged stationary phase and oppositely charged analytes, with cation exchange chromatography attracting positively charged molecules to a negatively charged stationary phase. Successful application of this technique requires careful selection of the appropriate ion exchange column, buffer pH, and salt concentration. This approach is often used in the biopharmaceutical industries as mAb polishing steps, viral clearance and charge variant analyses as part of the product quality control.</p><p><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/">Phenomenex</a> offers a range of protein purification columns. Their ion exchange chromatography solutions include:&nbsp;</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1526"><strong>Luna SCX </strong></a>for strong selectivity of positively charged compounds, such as peptides</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1540"><strong>Biozen WCX</strong></a> for efficient separation of proteins such as monoclonal antibodies charged variants</li><li><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/part/00g-3151-e0">PhenoSphere SAX</a>, a strong anion-exchanger with fully porous 80Å particles, particularly useful for small molecules such as nucleotides</li></ul><h5><strong>Size Exclusion Chromatography</strong></h5><p><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/techniques/hplc-sec">Size exclusion chromatography (SEC)</a> separates molecules based on their size, with larger analytes eluting first due to their exclusion from the pores in the column packing material, while smaller molecules are able to enter the pores, facing a longer travelling path, and hence, eluting later. This method can be categorized into aqueous SEC (gel filtration chromatography, GFC) for analyzing biomolecules such as proteins and antibodies. This type of chromatography is widely used as an analytical tool for quality control in the biopharmaceutical industry and can also be an approach of choice for polishing steps.</p><p>Phenomenex offers a range of <strong>Biozen columns for SEC</strong> separations. In the case of mAbs, <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1534"><strong>Biozen dSEC-2</strong></a> and<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1537"><strong> Biozen dSEC-7 </strong></a>columns are the top choices for monoclonal antibody (mAb) analysis, delivering high-resolution separation of monomers, aggregates, and fragments formed during mAb manufacturing, processing, or storage. The dSEC-7 column, featuring a larger pore size and optimized particle design, extends the dynamic range to accommodate larger biomolecules and complex biotherapeutics.</p><p>For more general applications, <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1533"><strong>Biozen SEC-2</strong></a><strong> </strong>and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1532"><strong>Biozen SEC-3</strong></a> phases cover different MW ranges for high-efficiency separation of biomolecules (e.g., proteins and antibodies). Additionally, the BioSep and Yarra lines become top choices when looking for preparative scale columns.</p><h5><strong>Reversed-Phase Chromatography</strong></h5><p><a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/techniques/hplc-reversed-phase">Reversed-phase chromatography</a>, the most common mode in high-performance liquid chromatography/ ultra-high-performance liquid chromatography (HPLC/UHPLC), separates compounds based on hydrophobic and van der Waals interactions using alkyl (C18, C8, C4) stationary phases or other hydrophobic polymers. For large biomolecules such as proteins and peptides, <a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/resources/blog/wider-pore-biozen-column">wide-pore</a> (typically 300 Å) C4, C8 and C18 columns are ideal, as the larger pore size allows better accessibility of the protein molecules to the stationary phase surface, improving mass transfer and peak shape during separation.</p><p>The Biozen line from Phenomenex offers a wide range of HPLC/UHPLC columns for the analysis of biomolecules.These include phases optimized for high-resolution analysis of intact proteins (Native-RP, Widepore C4, Intact XB-C8) and peptides (Peptide PS-C18, Peptide XB-C18 and Peptide Polar-C18). Kinetex could also be an option when looking for more selectivities for the analysis of peptides and small proteins. Additionally, when aiming to preparative scale processes, several of these media are also available in Phenomenex Axia formats to easily up-scale your separations.</p><h5><strong>Hydroxyapatite Chromatography</strong></h5><p>Hydroxyapatite chromatography (HAC) is a sophisticated mixed-mode chromatographic technique that exploits the unique properties of hydroxyapatite (Ca10(PO4)6(OH)2), utilizing both cation-exchange interactions via its phosphate groups and metal affinity through its calcium sites to achieve highly selective protein separations.</p><p>Renowned for its efficacy in resolving complex biomolecular separations, HAC excels in tasks like aggregate removal from monoclonal antibodies, surpassing the capabilities of traditional single-mode chromatographic methods such as ion-exchange or hydrophobic interaction chromatography.</p><h5><strong>Hydrophobic Interaction Chromatography</strong></h5><p>Hydrophobic interaction chromatography (HIC) is a method of protein purification that separates molecules based on their hydrophobicity, using high-salt buffers to promote protein-ligand interactions while maintaining the protein's biological activity. The process involves gradually reducing the salt concentration to elute proteins in order to increase hydrophobicity, making it effective for purifying target molecules and removing impurities or aggregates, making it a valuable approach for intermediate and polishing steps during purification processes.</p><h5><strong>Affinity Chromatography</strong></h5><p>Affinity chromatography is a powerful and highly selective technique used to purify biomolecules based on specific, reversible interactions between a target molecule and an immobilized ligand. In many cases, recombinant proteins are engineered with affinity tags—such as His-tags or GST-tags—that facilitate binding to complementary ligands on the chromatography matrix.</p><p>This method offers the advantage of achieving several thousand-fold purifications in a single step while preserving the biological activity of the protein. It is widely employed for purifying enzymes, antibodies, and antigens, using a variety of ligands including specific antibodies, enzymes, and multifunctional compounds like concanavalin A and triazine dyes.</p></div></div></div></div>

Exploring Protein Purification Methods: Essential Techniques for Accurate Results

<h3><span><strong>A Practical Guide to Getting the Most from Syringe Filters: Tips, Tricks, and Common Pitfalls</strong></span></h3><p><span><strong>Syringe filters play a crucial role in chromatography and many other laboratory applications by removing particulate matter before analysis. Proper sample filtration helps protect analytical instruments, extends column lifetime, and improves data quality. However, selecting an unsuitable filter—or using one incorrectly—can introduce contamination, reduce filtration efficiency, or even compromise analytical results. The following recommendations will help you avoid common mistakes and ensure reliable filtration every time.</strong></span></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_3_150e8c1c2b.webp" alt="KNAUER: Avoiding Common Syringe Filter Mistakes" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_3_150e8c1c2b.webp 133w," sizes="100vw" width="1276" height="1496"></p><h4><span><strong>1. Improper Filter Handling</strong></span></h4><p><span>Using excessive force during filtration or attempting to reuse disposable syringe filters can damage the membrane and increase the risk of sample contamination.</span></p><ul><li><span><strong>Solution:</strong> Apply slow, even pressure throughout the filtration process and always dispose of single-use filters after one use. If the flow rate decreases noticeably, replace the filter instead of applying additional force.</span></li></ul><h4><span><strong>2. Selecting an Inappropriate Pore Size</strong></span></h4><p><span>Using the wrong pore size may either fail to remove unwanted particles or cause the membrane to clog prematurely, reducing filtration efficiency.</span></p><ul><li><span><strong>Solution:</strong> A 0.45 µm membrane is generally suitable for routine particulate removal, while a 0.22 µm membrane is recommended for finer filtration and bacterial removal. Samples with higher viscosity may require a pre-filter to prevent rapid clogging. It is also important to consider the intended analytical technique. For example, 0.22 µm filters are typically preferred for UHPLC and LC-MS applications, whereas 0.45 µm filters are often sufficient for conventional HPLC analyses.</span></li></ul><h4><span><strong>3. Choosing the Wrong Membrane Material</strong></span></h4><p><span>Different membrane materials exhibit different chemical resistance. Using an incompatible membrane may lead to degradation of the filter, sample contamination, or complete filtration failure.</span></p><ul><li><span><strong>Solution:</strong> Always verify solvent compatibility before filtration. PTFE membranes are an excellent choice for organic solvents, while PES and nylon membranes are better suited to aqueous samples. If compatibility is uncertain, perform a small-scale trial before filtering valuable samples.</span></li><li><span><strong>Pro Tip:</strong> For additional guidance, see our blog article <strong>"How to Choose the Right Membrane for your Syringe Filter"</strong>, which provides a detailed comparison of membrane materials and their recommended applications.</span></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_2_e47021fb11.jpg" alt="KNAUER Sepapure® Syringe Filters are available with multiple membrane materials, each identified by a dedicated color code for quick and reliable selection." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_2_e47021fb11.jpg 245w," sizes="100vw" width="1580" height="902"></p><h4><span><strong>4. Ignoring Filter Capacity</strong></span></h4><p><span>Using a filter with insufficient capacity can result in rapid membrane blockage, increasing filtration time and reducing laboratory productivity.</span></p><ul><li><span><strong>Solution:</strong> When filtering larger sample volumes, choose high-capacity syringe filters or introduce a pre-filtration step. Never force liquid through a clogged membrane, as doing so may damage the filter and negatively affect sample quality.</span></li></ul><h4><span><strong>5. Overlooking Sample Adsorption</strong></span></h4><p><span>Certain membrane materials may adsorb analytes of interest, leading to lower recoveries and potentially affecting quantitative results.</span></p><ul><li><span><strong>Solution:</strong> For protein samples or other adsorption-sensitive analytes, select membranes with low binding characteristics, such as nylon or glass fiber, whenever appropriate. Performing a small recovery test before routine analysis can help identify potential analyte losses.</span></li></ul><h4><span><strong>6. Failing to Optimize Filtration Performance</strong></span></h4><p><span>Slow filtration is more than just an inconvenience—it often indicates that the filtration conditions are not optimal.</span></p><ul><li><span><strong>Solution:</strong> If filtration becomes unusually slow, investigate possible causes such as membrane clogging, excessive sample viscosity, or an unnecessarily small pore size. Depending on the sample, dilution or sequential filtration using progressively finer filters may significantly improve performance.</span></li></ul><h4><span><strong>Final Thoughts</strong></span></h4><p><span>Selecting the appropriate syringe filter is a straightforward process, but overlooking small details can have a significant impact on analytical performance. Choosing the correct membrane material, pore size, and filtration strategy helps improve laboratory efficiency, protects chromatography systems and columns, and contributes to accurate, reproducible analytical results.</span></p><p><span>With the right syringe filter and proper filtration technique, you can minimize sample preparation problems and maximize confidence in every analysis.</span></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_4_983a15e289.jpg" alt="KNAUER: Sepapure® Syringe Filter Selection" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Avoiding_Common_Syringe_Filter_Mistakes_4_983a15e289.jpg 245w," sizes="100vw" width="1160" height="627"></p><p><span><strong>Happy filtering!</strong></span></p>

Avoiding Common Syringe Filter Mistakes

News from LabRulezLCMS Library - Week 27, 2026

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Academy

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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.

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Phenomenex is a global technology leader committed to developing novel analytical chemistry solutions that solve the separation and purification challenges of researchers in industrial, government and academic laboratories.

Phenomenex

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

MAC-MOD ANALYTICAL

Waters Corporation

<h3><strong>Solving Problems That Matter - a Waters webinar series featuring USP speakers</strong></h3><h4><strong>Episode 9: Nitrosamines</strong></h4><p><strong>When present in pharmaceutical products, nitrosamine impurities - a probable carcinogen - can disrupt drug supply chains and lead to shortages resulting from product recalls and withdrawals.</strong></p><p>Join our panelists Naiffer Romero from the USP and Marian Twohig from Waters Corporation as they address analytical challenges in the detection and control of nitrosamines and Nitrosamine Drug-Substance Related Impurities (NDSRIs).</p><p><strong>Key learning objectives:</strong></p><ul><li>Understand the current analytical challenges associated with the detection and control of nitrosamine impurities. Explore fit-for-purpose and compliant-ready LC-MS-MS solutions for the cGMP laboratory.</li></ul><p><strong>Who should attend:</strong></p><ul><li>Pharmaceutical scientists involved with the detection and control of nitrosamines impurities</li></ul><blockquote><p><strong>Presenter:</strong> Naiffer Romero, MSc, MPH (Principal Scientist - Scientific Affairs, US Pharmacopeia)</p></blockquote><blockquote><p>Naiffer has more than 20 years of pharmaceutical industry experience. In his 13+ years tenure with USP, he has served several roles: Lead scientist in the dosage form performance laboratory, reference standard development team, Manager in charge of LATAM Compendial engagement and education, responsible for stakeholders and national regulatory bodies engagement. Naiffer is also a certified USP Education instructor. Most recently, Naiffer joined USP's Scientific Affairs performance cell, where he leads scientific outreach and engagement for LATAM &amp; U.S. on key national health priority topics. His combined pharmaceutical expertise includes Analytical Development, salt and polymorph selection, Development of dissolution methods, IVIVC modeling, and impurity analytical strategy. Naiffer also serves as a member of USP's Nitrosamine Steering Committee and community host to 'Nitrosamine Exchange,' a knowledge community in All-things Nitrosamine. Naiffer also liaises technical discussion on pharmacopeial collaboration, including international meetings of World Pharmacopeias (part of WHO).</p></blockquote><blockquote><p><strong>Presenter:</strong> Marian Twohig, Ph.D. (Consultant Scientist, Waters Corporation)</p></blockquote><blockquote><p>Marian has over 20 years of experience supporting quantitative and qualitative applications in the pharmaceutical, food and environmental and materials science industries. She works as a Consultant Scientist for Waters Corporation where she has previously held several Senior Scientist positions. Currently, the focus of Marian’s work is in the development of quantitative analytical methods to meet the needs of the pharmaceutical industry. She is particularly interested in chromatographic separations and the application of combining low- and high-resolution mass spectral data with other chemical information for identification of unknown chemical entities. Marian holds a Ph.D. in Analytical Chemistry from Munster Technological University, Cork, Ireland.</p></blockquote><blockquote><p><strong>Moderator:</strong> Isabelle Vu Trieu (Pharmaceutical Market Development Manager, Americas, Waters Corporation)</p></blockquote><blockquote><p>Isabelle is a business development professional dedicated to delivering benefits to analytical scientists in the life sciences industry. With over 20 years of experience in providing chromatography and mass spectrometry solutions, Isabelle is particularly interested in helping pharmaceutical scientists achieve the data quality and integrity needed to drive decisions for drug quality, safety and efficacy. Isabelle joined Waters in 2009 and currently manages the development of the pharmaceutical market in the Americas. She holds Masters’ degrees in Chemistry from Columbia University and the University Claude Bernard in Lyon, France as well as a Chemical Engineering degree from Ecole Supérieure de Chimie Physique Electronique in Lyon, France.</p></blockquote>

Waters Corporation: Solving Problems That Matter - a Waters webinar series featuring USP speakers

Nitrosamines

This webinar will address analytical challenges in the detection and control of nitrosamines and Nitrosamine Drug-Substance Related Impurities (NDSRIs).

<h4><strong>European Free Educational Webinar Series</strong></h4>
<p><strong>Let&#39;s go back to the basics of Chromatography, Mass Spectrometry, Data Analysis and Trouble-shooting: understanding the importance of the basics will enable you to be more effective in your daily laboratory life.</strong></p>
<h4><strong>EPISODE 5</strong></h4>
<p><strong>Analytical Method Development</strong></p>
<p><strong>What will you learn?</strong></p>
<ul>
<li>How to choose the right Analytical Column Kit</li>
<li>Select the critical Parameters for your Analytical Methods</li>
</ul>
<blockquote>
<p><strong>Prezenter:</strong> Andrea Gheduzzi (Principal LC Market Dev. Manager, EMEA, Waters Corporation)</p>
</blockquote>
<blockquote>
<p>Andrea has spent more than 30 years in the chromatography field. Across his career he had various roles, service engineer, chromatography lab position, and technical application support manager. He has mainly been dealing with pharma accounts, also supporting LC method development activities using DoE/QbD approaches. In his role as Pharma Business Development Manager at Waters he has further expanded his expertise in AQbD and related applications.</p>
</blockquote>
<blockquote>
<p><strong>Prezenter:</strong>  Tobias Langrock (Senior Application Specialist Chemistry Europe, Waters)</p>
</blockquote>
<blockquote>
<p>During his time as a PhD student Tobias discovered his passion for LC and LC-MS/MS and has not lost it since. Joining Waters in 2008 was the perfect opportunity to expand his understanding and expertise in chromatography and mass spectrometry. Since then, he has been involved with a very wide range of instruments and applications, whether small or large molecules, reversed phase LC, IEX or SEC, SFC or GPC. His focus is always on the customers and their daily chromatographic challenges.</p>
</blockquote>
<h4><strong>What&#39;s next?</strong></h4>
<p>Full Webinar Series Episodes List is available <a href="https://event.on24.com/wcc/r/4551012/F69479929A905500D8B21508527807E5/5385652"><strong>here</strong></a></p>
<p>Back to Basics - Sample Preparation: Theory and Overview</p>
<ul>
<li>Tuesday, May 07, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - Sample Preparation: Tips &amp; Tricks to make it simple</p>
<ul>
<li>Wednesday, June 05, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - Theory of Liquid Chromatography</p>
<ul>
<li>Wednesday, July 03, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - Basics of Liquid Chromatography</p>
<ul>
<li>Tuesday, September 10, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - Analytical Method Development</p>
<ul>
<li>Wednesday, October 02, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - The importance of Compliance</p>
<ul>
<li>Tuesday, October 22, 2024, 11:00 AM CEST</li>
</ul>
<p>Back to Basics - Introduction to Mass Spectrometry</p>
<ul>
<li>Wednesday, November 13, 2024, 11:00 AM CET</li>
</ul>
<p>Back to Basics - Troubleshooting your LC and MS Systems</p>
<ul>
<li>Tuesday, December 10, 2024, 11:00 AM CET</li>
</ul>
<p><strong>Not sure to be able to attend live sessions?</strong></p>
<p>Register today and watch the webinars on-demand</p>


Waters Corporation: Back to Bacisc Free Educational Webinar Serries

Analytical Method Development

How to select analytical column kit and the critical parameters for your method.

Analytical Method Development (HPLC, LC/MS, columns)

<p><strong>Hydrophilic interaction liquid chromatography (HILIC) and hydrophobic interaction chromatography (HIC) separations are becoming more common for a variety of applications. We see HIC being a primary method being used for antibody-drug-conjugate (ADCs) analyses and equally suitable for the analysis of protein modifications. The ability to retain neutral and ionizable polar species makes HILIC particularly popular for drug development and metabolomics studies.</strong></p>
<p>This webinar will help new HILIC and HIC chromatographers avoid the common mistakes of HILIC and HIC separations by identifying the important method parameters involved. We’ll discuss how the separation works, show detailed application examples, and provide tip and tricks for robust method development.</p>
<blockquote>
<p><strong>Presenter:</strong> Mohit Patel (Application Engineer, Agilent Technologies, Inc.)</p>
</blockquote>
<blockquote>
<p>Mohit Patel is part of the CSD Online AE Team. His primary focus is to support SMLC, Bio-Columns, and consumables.</p>
</blockquote>
<blockquote>
<p>Before joining Agilent, Mohit was an Assistant Professor of Chemistry at Temple University. Mohit developed his passion for science through his experiences as a faculty researcher and a mentor. Mohit actively taught, developed curriculum, and served as senior personnel, with a leadership position, on funded grants, mentored research projects, and co-coordinator of STEAM related outreach services.</p>
</blockquote>
<blockquote>
<p>Mohit has earned a Doctorate degree in Chemistry from Temple University in 2016.</p>
</blockquote>


Agilent Technologies: Why Use HILIC or HIC Chromatography: Theory and Method Development Strategies

Why Use HILIC or HIC Chromatography: Theory and Method Development Strategies

This webinar will help new HILIC and HIC chromatographers avoid the common mistakes of HILIC and HIC separations.

HILIC or HIC: Theory and Method Development Strategies

<p><strong>In liquid chromatography, various detectors can be used. In this seminar we will take a closer look at UV, fluorescence, refractive index and ELSD detection.&nbsp;</strong></p><blockquote><p><strong>Presenter:</strong> Ansuman Mahato (Product Specialist Liquid Phase Separations, Agilent Technologies)</p><p>Ansuman has been a Product Specialist at Agilent Technologies for 14 years, working with the pharmaceuticals, biopharmaceuticals, food, and chemicals industries. Based in Waldbronn, Germany, the manufacturing site for Agilent’s chromatography solutions, he helps make labs more efficient and compliant and has rich experience with techniques like HPLC, UHPLC, GPC/SEC, Prep LC, and 2D-LC.</p><p>Ansuman is also skilled in polymer analysis using advanced tools like viscometry and MALS. He has published many papers in international journals and is a popular speaker for his practical insights and innovative solutions.</p></blockquote>

Agilent Technologies: HPLC Beginner Webinar Series

HPLC Detectors

In liquid chromatography, various detectors can be used. In this seminar we will take a closer look at UV, fluorescence, refractive index and ELSD detection.

<p><strong>Chromatography is a pivotal analytical technique in pharmaceutical industry, essential for the separation, identification, and quantification of components in complex mixtures. USP Chapter 621 provides comprehensive guidelines on chromatographic methods, ensuring consistency, reliability, and accuracy across laboratories.</strong></p><p><strong>This webinar covers the principles of USP Chapter 621, highlighting recent revisions. Attendees will gain insights into the permissible adjustments in chromatographic parameters and system suitability requirements. Case studies will be demonstrated to ensure compliance with regulatory standards.</strong></p><p>To be successful in implementing USP Chapter 621, we show you the practicality of using Agilent recommended LC supplies and explore how they can enhance laboratory efficiency.</p><h5><strong>Key learnings:</strong></h5><ul><li><strong>A clear understanding of recent changes to USP Chapter 621 that impact your work.</strong></li><li><strong>Practical guidance on how to adjust chromatographic parameters without losing accuracy.</strong></li><li><strong>Case studies that connect theory to practice, ensuring you’re set for regulatory compliance.</strong></li><li><strong>Simple ways to improve lab efficiency using tools and supplies that support you, not complicate your process.</strong></li></ul><blockquote><p><strong>Presenter:</strong> Mr. Andrea Leonardi (Product Specialist, Chemistries &amp; Supplies, Agilent Technologies)</p><p>Andrea holds a master's degree in Pharmaceutical Chemistry and Technology form Universita’ degli Studi di Camerino in Central Italy. Since completing his studies, he has held various laboratory and research roles with pharmaceutical companies in Italy and Switzerland, before coming to Singapore to join Novartis Institute for Tropical Diseases. This latest job involved characterizing novel APIs (Active Pharmaceutical Ingredients) by LC and LC/MS.</p><p>In Agilent, Andrea is a Product Specialist in the Chemistries and Supplies Division in the South-East Asia Pacific and Korea region. He supports customers by helping to develop new analytical methods and improve existing ones to enhance lab efficiency and productivity. He also conducts training, seminars, and workshops. His expertise is in LC and LC/MS analysis of small molecules and biologics.</p><p><strong>Presenter:</strong> Ms. Soo Chin Heng (Product Specialist, Chemistries &amp; Supplies, Agilent Technologies)</p><p>Soo Chin is currently a Chemistries &amp; Supplies Product Specialist with Agilent Technologies Singapore, covering South Asia Pacific and Korea region. She holds a BSc (Hons) in Chemistry and MSc in Advanced Chemical Engineering from Imperial College, London.</p><p>Over 12 years in Agilent, she held roles as Agilent inside sales for Chromatography &amp; Spectroscopy instruments, as well as a pre-sales applications scientist for HPLC and Spectroscopy products, specializing in food market applications, purification by preparative LC and thin films &amp; optical coatings in materials applications. She supports customers by providing Agilent workflow solutions to our customers from the applied and life science market segments and actively supports trainings, seminars and workshops.</p></blockquote>

Agilent: Mastering Chromatographic Adjustments: A Guide to USP Chapter 621

Mastering Chromatographic Adjustments: A Guide to USP Chapter 621

Successful implementing USP Chapter 621: the practicality of using Agilent recommended LC supplies

Chromatographic Adjustments: A Guide to USP Chapter 621

<p><strong>USP &lt;621&gt; is a crucial chapter in the USP guidelines, affecting around 5000 monographs. It emphasizes the importance of establishing meaningful system suitability criteria for chromatography procedures to ensure valid, compendial, and regulatory compliance. The latest version of USP &lt;621&gt;, effective from December 2022, provides detailed guidance on method adjustments and transfers, facilitating the modernization of existing USP monograph methods. The revisions also expand the scope for modifying gradient method parameters and allow the transition from totally porous silica-based analytical columns to superficially porous particle-based columns to better meet industry needs.</strong></p><h5><strong>Key Learnings:</strong></h5><ul><li>Strategies for optimizing chromatographic performance using right HPLC system</li><li>Understand the latest updates in USP &lt;621&gt; and how they impact chromatographic practices</li><li>Techniques for enhancing laboratory productivity and reducing operational costs</li><li>Strategies to modernize chromatographic conditions with case-studies</li><li>Revised System suitability requirements and allowable chromatographic system adjustments</li><li>and more</li></ul><blockquote><p><strong>Presenter:</strong> Dr. Manoj Kumar Singh (Senior Vice President, Microlabs Analytical Research Lab)</p><p>Dr. Manoj K Singh hold over 30 yrs of professional experience of working with global pharma companies leading their Analytical labs to support different pharma work-flows.</p><p>He holds a Ph.D. degree (Chemistry).</p><p>He started his professional career in 1993 with Wockhardt and spent significant tenure at major pharma R&amp;Ds like Lupin, Novartis, Orchid, Dabur &amp; Sentiss Pharma.</p><p>Currently he is associated with MicroLabs Bangalore as Senior Vice President (ADL) leading team of Analytical Chemistry scientists to support formulation development, Validations and method transfer.</p><p><strong>Presenter:</strong> Dr. Kuldeep Sharma (Sales Development Manager - Pharma, Agilent Technologies)</p><p>Kuldeep Sharma has over 19 years of experience in area/s of Bioanalytical research, Drug metabolism &amp; pharmacokinetics and Pharma regulatory compliance. He has accomplished PhD in Biotechnology. His professional journey covers over 12 years in Analytical research (associated with R&amp;D’s of Zydus Cadila, Lambda, Pliva and Jubilant Biosys) and last 7 years in analytical instruments sales, marketing &amp; business development. With over 21 research articles published in international Journals, He presents convention of continues learning.</p></blockquote>

Agilent: Enhance Lab Productivity While Meeting Regulatory Requirements: USP 621 Decoded

USP 621 Decoded

Enhance Lab Productivity While Meeting Regulatory Requirements

<p><span class="registration-description" data-bind="expander:{'expandText': moreButtonText(), 'userCollapseText': lessButtonText(), 'text':getWebinarInfo().description}"><strong>This webinar is the first part in a three-part series called "A Systematic UHPLC / HPLC Method Development Strategy with Complementary Stationary Phases to Maximize Selectivity and Resolution." Each part is about 20min long.</strong></span></p><p><span class="registration-description" data-bind="expander:{'expandText': moreButtonText(), 'userCollapseText': lessButtonText(), 'text':getWebinarInfo().description}">In this seminar, we review the importance of chromatographic selectivity in RPLC from a theoretical and practical perspective and how this relates to analyte resolution for method development. An overview of the method development workflow is discussed.</span></p><blockquote><p><span class="registration-description" data-bind="expander:{'expandText': moreButtonText(), 'userCollapseText': lessButtonText(), 'text':getWebinarInfo().description}"><strong>Presenter:</strong> Gemma Lo (Portfolio Manager Avantor)</span></p></blockquote>

MAC-MOD ANALYTICAL: Understanding Chromatographic Selectivity

Understanding Chromatographic Selectivity

We review the importance of chromatographic selectivity in RPLC from a theoretical and practical perspective and how this relates to analyte resolution.

<div data-lineheight="1.5"><p><strong>Food analysis is crucial for consumer safety, authenticity, and pollutant detection. Benchmark analytical methods use complex protocols and organic solvents, and more sustainable alternatives are to be sought out. A recent trend in analytical chemistry leverages raw data from experiments (e.g., chromatographic profiles, spectra) as sample fingerprints, analyzed with multivariate tools to predict characteristics (e.g., origin, composition) and identify adulterations. These approaches reduce analyses, lab work, and resource use, offering greener, more cost-effective alternatives.</strong></p><p>The webinar will show how to combine the two aims, sustainability and data maximization, using an aqueous colloidal system, developing AF4-DAD-MALS-dRI-FLD platforms to separate and characterize components from food matrices:</p></div><ul><li data-lineheight="1.5">Red wine profiling and in-depth analysis of output data can highlight particulate complexity, explain sensory feedback, and lead to cultivar grouping.</li><li data-lineheight="1.5">Milk analysis and multivariate elaboration of fractograms enabled single-run discrimination of factors like thermal treatment, fat content, and even the manufacturing plant’s impact on colloidal content.</li></ul><p>These AF4 method are fast, uses minimal sample preparation, avoid chemical treatments, offering a greener, faster and possibly cheaper alternative. The FFF approach can enhance food quality control and fraud detection processes and is adaptable to other colloidal food samples. Additionally, it underscores the need to increase multivariate analysis in data from FFF platforms.</p><h4>Key Learning Objectives:</h4><ul><li data-lineheight="1.5">Tackle native sample handling</li><li data-lineheight="1.5">Understanding data extraction from multidetection profiling</li><li data-lineheight="1.5">Rationalizing multivariate analysis of FFF data</li></ul><h4>Who Should Attend:</h4><ul><li data-lineheight="1.5">Laboratory managers</li><li data-lineheight="1.5">Chromatographers</li><li data-lineheight="1.5">Scientist in the Food &amp; beverage industry</li></ul><blockquote><p><strong>Presenter:</strong> Valentina Marassi, Ph.D. (University of Bologna, byFlow srl)</p><p>Dr. Marassi is Tenure-Track Researcher and Assistant Professor in Analytical Chemistry at the University of Bologna. She graduated with a B.S. in chemistry, a Master’s in Organic Chemistry and completed a PhD in Analytical Chemistry in the same Institution. Her core research involves separation science and profiling-multidetection applied to nano-bio samples, and developing FFF-chemometrics strategies to model and understand colloidal profiles.</p><p><strong>Presenter:</strong> Prof. Andrea Zattoni (University of Bologna, byFlow srl)</p><p>Andrea Zattoni joined the University of Bologna in 2006 and is currently an Associate Professor. He holds an M.S. in Chemistry and a Ph.D. in Chemical Sciences from the University of Bologna with a research focus on separation science. His main research interests include the fundamental and instrumental development of field-flow fractionation and its combination with highly sensitive and selective detection techniques.</p><p><strong>Presenter:</strong> Udayabagya (Bud) Halim (Waters | Wyatt Technology)</p><p>Bud Halim is a senior marketing analyst at Wyatt Technology. He holds a B.S. and Ph.D. in physical chemistry from the UCLA. Bud started his career as an adjunct professor where he taught courses such as Biochem, Analytical, and Physical Chemistr. Prior to joining Wyatt Technology, Bud worked in the scientific instrumentation field as an applications scientist for three years. His experience spans the characterization of batteries, semiconductors, and the stability of biologics, LNPs, and viral vectors.</p></blockquote>

Waters Corporation: Colloidal Fingerprints of Food and Beverages with multidetector AF4-MALS

Colloidal Fingerprints of Food and Beverages with multidetector AF4-MALS

How to combine sustainability and data maximization, using an aqueous colloidal system, developing AF4-DAD-MALS-dRI-FLD platforms.

Fingerprints of Food and Beverages with AF4-MALS

<p><strong>This course is designed to introduce those familiar with analytical-scale HPLC to capillary (or “nano”) liquid chromatography. Although both techniques are based on the same fundamental principles, capillary LC delivers a number of distinct advantages with appropriate use.</strong></p><p>Commercial instrument options, as well as the basics of preparing your own capillary LC columns, will be described. Because one of the most prominent uses of capillary LC is its coupling to mass spectrometry for complex biological sample analysis, special attention will be given to this important area. Both academic and industrial researchers will be able to apply the information gained through this course to successfully use this essential technique.</p><p><strong>After completing this course, participants will be able to:</strong></p><ul><li><strong>Understand the differences between analytical and capillary scale LC</strong></li><li><strong>Describe the fundamentals of capillary LC column preparation</strong></li><li><strong>Determine the best detection modes for a given application</strong></li><li><strong>Explain the advantages of coupling capillary LC with mass spectrometry and how to approach method development using capillary LC-MS</strong></li><li><strong>Identify best practices for the use of capillary LC to solve analytical challenges</strong></li></ul><h5>Who Should Attend?</h5><p>Scientists, chemists, analytical researchers, lab directors and managers, VPs and directors of QC/QA, lab owners</p><blockquote><p><strong>Presenter:</strong> Dr. James Grinias (Professor, Department of Chemistry &amp; Biochemistry, Rowan University)</p><p>James Grinias is a Professor in the Department of Chemistry &amp; Biochemistry at Rowan University in Glassboro, New Jersey, USA. Dr. Grinias has a number of research interests focused on chemical separations and microfluidics, both at the fundamental level and for the analysis of biological systems. He is the recipient of the 2021 American Chemical Society Satinder Ahuja Award for Young Investigators in Separation Science and the 2022 LCGC Emerging Leader in Chromatography. At Rowan, he teaches courses in general, analytical, and bioanalytical chemistry while also conducting research on UHPLC column performance and instrument miniaturization.</p><p><strong>Presenter:</strong> Greg Ward (CEO, Axcend)</p><p>Greg Ward serves as the CEO of Axcend, renowned for its portable high-performance liquid chromatography (HPLC) systems. Greg has over 30 years of experience in the technology and scientific instrumentation sectors. Before joining Axcend, Greg held technical and marketing roles at Hewlett Packard and Agilent Technologies. His leadership at Axcend has been pivotal in advancing the development and commercialization of the Axcend Focus LC®, a compact and eco-friendly HPLC system that has revolutionized the field by offering customers portability, ease of use, and reduced operational costs. Axcend has made significant strides in making high-quality chromatographic analysis accessible and convenient for various industries, including pharmaceuticals, environmental monitoring, and chemical manufacturing. Greg’s vision and dedication continue to push the boundaries of scientific analysis, making him a key leader in the field of compact liquid chromatography.</p></blockquote>

Separation Science: Introduction to Compact Liquid Chromatography

Introduction to Compact Liquid Chromatography

This course is designed to introduce those familiar with analytical-scale HPLC to capillary (or “nano”) liquid chromatography. 

<h5><strong>Who Should Attend:</strong></h5><ul><li>Any HPLC scientists beginning with method development&nbsp;or working with small molecules in pharmaceutical labs &nbsp;</li></ul><h5><strong>Key Learning Points:</strong></h5><ul><li><strong>Learn about selectivity benefits of phenyl phases during reversed-phase HPLC</strong></li><li><strong>Review mobile-phase optimization when using a phenyl column</strong></li><li><strong>Examine a thorough comparison of different phenyl phases with a C18 phase</strong></li></ul><blockquote><p><strong>Presenter:</strong> Zachary Woodward (Senior Technical Specialist, Phenomenex)</p><p>Zachary Woodward is a Senior Technical Specialist with Phenomenex, Inc, assisting laboratories with method development in the bio-pharma, environmental, and food industries. &nbsp;Zachary spent his formative years developing HPLC and GC methods with a pharmaceutical lab in Albany, NY, after which he developed HPLC and SPE methods in the clinical setting here in Southern California. &nbsp;Zachary received his B.Sci. in Chemistry from the College of William and Mary, was awarded his Master’s in Chemistry at San Diego State University, and is happy to speak with you today!</p></blockquote>

How to Choose a Phenyl Phase

Learn about selectivity benefits of phenyl phases during reversed-phase HPLC. Review mobile-phase optimization when using a phenyl column.

LCMS webinars focusing on HPLC - page 21