<div>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.</div><div><div><div><div><h3>What is Protein Purification?</h3>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.This process is especially vital in biotechnological areas inside immunology and microbiology. In immunology, 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 microbiology, 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.</div></div></div></div><div><div><div><div><h3>Types of Protein Purification Methods</h3></div></div></div></div><div>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:</div><div><div><div><div><h4>Non-Chromatographic Approaches</h4></div></div><div>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.<h5>Precipitation Techniques</h5>Protein precipitation is a widely used approach in purification workflows, typically relying on one of three main methods:<ul><li>Organic solvent precipitation 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>Isoelectric point precipitation 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>Nonionic polymer precipitation 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>Dialysis</h5>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.<h5>Immunocapture (Magnetic Bead-Based Purification</h5>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:<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>Magnetic beads offer speed, ease of use, and minimal sample loss, making them ideal for lab-scale workflows.<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.<h5>Centrifugation</h5>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.Preparative Ultracentrifugation 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.Differential Centrifugation 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.Rate-zonal Gradient Centrifugation 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.Isopycnic Centrifugation (Equilibrium Centrifugation) 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.</div></div></div><div><div><div><div><h4>Chromatographic Approaches</h4>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.<h5>Ion Exchange Chromatography</h5><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.<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;<ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1526">Luna SCX </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">Biozen WCX</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>Size Exclusion Chromatography</h5><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.Phenomenex offers a range of Biozen columns for SEC separations. In the case of mAbs, <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1534">Biozen dSEC-2</a> and<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1537"> Biozen dSEC-7 </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.For more general applications, <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1533">Biozen SEC-2</a> and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1532">Biozen SEC-3</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.<h5>Reversed-Phase Chromatography</h5><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.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.<h5>Hydroxyapatite Chromatography</h5>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.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.<h5>Hydrophobic Interaction Chromatography</h5>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.<h5>Affinity Chromatography</h5>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.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.</div></div></div></div>

Exploring Protein Purification Methods: Essential Techniques for Accurate Results

<h3>A Practical Guide to Getting the Most from Syringe Filters: Tips, Tricks, and Common Pitfalls</h3>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.<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"><h4>1. Improper Filter Handling</h4>Using excessive force during filtration or attempting to reuse disposable syringe filters can damage the membrane and increase the risk of sample contamination.<ul><li>Solution: 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.</li></ul><h4>2. Selecting an Inappropriate Pore Size</h4>Using the wrong pore size may either fail to remove unwanted particles or cause the membrane to clog prematurely, reducing filtration efficiency.<ul><li>Solution: 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.</li></ul><h4>3. Choosing the Wrong Membrane Material</h4>Different membrane materials exhibit different chemical resistance. Using an incompatible membrane may lead to degradation of the filter, sample contamination, or complete filtration failure.<ul><li>Solution: 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.</li><li>Pro Tip: For additional guidance, see our blog article "How to Choose the Right Membrane for your Syringe Filter", which provides a detailed comparison of membrane materials and their recommended applications.</li></ul><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"><h4>4. Ignoring Filter Capacity</h4>Using a filter with insufficient capacity can result in rapid membrane blockage, increasing filtration time and reducing laboratory productivity.<ul><li>Solution: 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.</li></ul><h4>5. Overlooking Sample Adsorption</h4>Certain membrane materials may adsorb analytes of interest, leading to lower recoveries and potentially affecting quantitative results.<ul><li>Solution: 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.</li></ul><h4>6. Failing to Optimize Filtration Performance</h4>Slow filtration is more than just an inconvenience—it often indicates that the filtration conditions are not optimal.<ul><li>Solution: 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.</li></ul><h4>Final Thoughts</h4>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.With the right syringe filter and proper filtration technique, you can minimize sample preparation problems and maximize confidence in every analysis.<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">Happy filtering!

Avoiding Common Syringe Filter Mistakes

News from LabRulezLCMS Library - Week 27, 2026

Article

Product

Application

Academy

Poster

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

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

Technology Networks

SelectScience

VWR/Avantor

Waters Corporation

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

Scale Up with Confidence: Column Selection for Preparative HPLC

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

Scale Up: Column Selection for Preparative HPLC

Key Learning Points:
<ul>
<li>Learn why chiral screening is done, what are the benefits</li>
<li>Take a deep dive into columns, and screening modes/methods</li>
<li>Listen into sample compatibility considerations including: detection, solubility, and chiral centers</li>
<li>Understand quick, easy, and cost-effective ways to identify a solution for your chiral separation needs</li>
</ul>
Who Should Attend:
<ul>
<li>Any LC users who would like to get tips on a chiral screening process for method development</li>
<li>Any academia or pharmaceutical scientists who need to rapidly develop a method for separation and characterization of their chiral compounds</li>
</ul>
<blockquote>
Presenter: Zandra Baja (Applications Scientist, Phenomenex)
</blockquote>

Phenomenex: Chiral Chromatography Screening 101

Chiral Chromatography Screening 101

Join us in this upcoming webinar and take a deep dive into columns and screening modes/methods!

Three Webinars and a Roundtable with Experts from Merck KGaA, Darmstadt, Germany, Metrohm &amp; Mettler Toledo
A Week Dedicated to Karl Fischer Titration!
Karl Fischer titration is still the most used, most accurate, and fastest method to determine water content in all kinds of sample matrices. This titration week covers different aspects that need to be considered when determining the water content in products, raw materials, and other substances. Experts from the life science business of Merck KGaA, Darmstadt, Germany, Metrohm AG, and Mettler Toledo will present and discuss different steps of the Karl Fischer titration process and how to improve it. Learnings include:
<ul>
<li>Karl Fischer titration process and tips for how to improve it</li>
<li>Karl Fischer oven method and its advantages</li>
<li>Reference materials to use for titer determination, instrument check, and result verification</li>
<li>Parameters needed to validate a Karl Fischer titration application</li>
<li>News and future aspects of Karl Fischer titration</li>
</ul>
<h3>Importance of CRM-grade Karl Fischer Standards for Accurate KF Titration</h3>
Karl Fischer (KF) titration is one of the most rapid and accurate methods to determine water content in various samples. For accurate KF titration, high quality Certified Reference Materials (CRMs) are essential. In this webinar, we will present key reference material terms, different quality grades of reference materials, and an overview of our portfolio of high-quality CRM-grade KF Standards. By attending this presentation, you will learn:
<ul>
<li>Key terms: Metrological Traceability, Quality Grades, 17025 &amp; 17034 Accreditation</li>
<li>The importance of using the right quality grade of KF standards for your application</li>
<li>An overview of our unmatched portfolio of KF standards</li>
</ul>
<blockquote>
Presenter: Shailly Krishna-Rajusth (Product Manager for Physical &amp; Chemical Property Standards at the life science business of Merck KGaA, Darmstadt, Germany)
</blockquote>

Separation Science: Importance of CRM-grade Karl Fischer Standards for Accurate KF Titration

Importance of CRM-grade Karl Fischer Standards for Accurate KF Titration

Key reference material terms, different quality grades of reference materials, and an overview of our portfolio of high-quality CRM-grade KF Standards.

CRM-grade Karl Fischer Standards for Accurate KF Titration

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

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

Focus will be given to the safety, authenticity and quality of food and beverages as well as the future of food products such as meat substitutes and alternative proteins.
This online symposium will cover:
<ul>
<li>Untargeted food analysis using different MS platforms</li>
<li>Applications of near-infrared hyperspectral imaging in food quality control</li>
<li>Applications of behavioral science in food research</li>
<li>Solid phase micro-extraction for beverage analysis</li>
<li>Challenges and opportunities in fermentation for production of alternative proteins</li>
<li>ELNs to support data management in food and beverage labs</li>
<li>Key strategies for pesticide analysis using GC-MS</li>
<li>Nutritional and toxic plant-based elemental analysis using ICP-MS</li>
</ul>
<blockquote>
Presenter: Brian Quinn, PhD (Head of Mass Spectrometry, Queen&#39;s University Belfast)
</blockquote>
<blockquote>
Presenter: Vincent Baeten, PhD (Scientific Director, Walloon Agricultural Research Centre)
</blockquote>
<blockquote>
Presenter: Michelle Niedziela, PhD (VP of Research &amp; Innovation, HCD Research)
</blockquote>
<blockquote>
Presenter: Erich Leitner, PhD (Professor, Graz University of Technology)
</blockquote>
<blockquote>
Presenter: Stefan Cretnik, PhD (Product Manager, PAL System)
</blockquote>
<blockquote>
Presenter: Theresa Liao (Content Specialist, SciNote)
</blockquote>
<blockquote>
Presenter: Wade Opperman (Manager of the Americas, SciNote)
</blockquote>
<blockquote>
Presenter: Moran Farhi, PhD (VP of Research, The Better Meat Co.)
</blockquote>
<blockquote>
Presenter: Liyan Xing, PhD (Senior Application Scientist, PerkinElmer)
</blockquote>
<blockquote>
Presenter: Anastasia Andrianova, PhD (GC/MS Applications Scientist, Agilent Technologies)
</blockquote>

Technology Networks: Advances in Food & Beverage Analysis 2023

Advances in Food & Beverage Analysis 2023

The third edition of this online symposium will provide industry and academic scientists with the opportunity to hear from experts from across the field.

As a continuation of our Chromatography of Bioseparations 101 series, we bring to you 2 NEW SESSIONS in our Chromatography of Bioseparations 102 webinar series! Join us live for our new parts 6 and 7. If you haven&#39;t had an opportunity to register for Parts 1-5, feel free to regster and listen to them on-demand now.
These new webinars will focus on the analytical separation of biomolecules such as peptides and amino acids.
Reverse-phase chromatography is the predominant technique used for the analyses and or purification of chemically synthesized peptides or peptides generated by the enzymatic digestion of proteins (i.e., peptide mapping). It is advantageous to have a simplified step-by-step approach to develop a method that can be applied to chemically synthesized peptides or protein digests.
Amino acid analysis is required in several different areas of research and is a fundamental tool in various product analytical activities. Due to the varied properties of amino acids (i.e., acidic, basic, etc.), the separation and detection represents an analytical challenge and depending on throughput, sample preparation can be laborious. 
Who should attend?
<ul>
<li>Those interested in a refresher on foundational principles and tips of reverse phase separations of peptides.</li>
<li>Those interested in how to select columns and mobile phases that are optimal for peptide and amino acid workflows.</li>
<li>Those looking for an overview of industry advancements and new offerings.</li>
</ul>
<h3>PART 6 | June 20th, 2023 | 10:30AM – 12:00PM EDT</h3>
<h3>PRINCIPLES AND PRACTICAL STEPS IN DEVELOPING REVERSE-PHASE PEPTIDE SEPARATIONS</h3>
<ul>
<li>Learn how column chemistry and mobile phase affects peptide separation and selectivity.</li>
<li>Review the factors that synergistically work to obtain desired resolution of peptides contained in a complex mixture.</li>
</ul>
<blockquote>
Presenter: Bill Warren (Consulting Product Manager – Consumables and Lab Automation, Waters Corporation)
</blockquote>
<blockquote>
Bill received his MS in Microbiology and Immunology from the University of Louisville School of Medicine. In 1986, joined Waters Corporation as an senior applications chemist involved with the research and development of HPLC, FPLC, and Capillary Electrophoresis applications for the analysis and purification of proteins, peptides, and nucleic acids. Following four years as a field based technical sales representative for Waters, Bill enjoyed a tenure as Manager, Core Product Evaluation Laboratory within the Waters Worldwide Marketing Organization. Bill currently is a Principal Bioseparation Columns Product Manager whose responsibilities involve assisting in the development and commercialization of innovative reagents and chromatography-based technologies for the separation, purification, and characterization of proteins and peptides.
</blockquote>

Waters Corporation: PRINCIPLES AND PRACTICAL STEPS IN DEVELOPING REVERSE-PHASE PEPTIDE SEPARATIONS

PRINCIPLES AND PRACTICAL STEPS IN DEVELOPING REVERSE-PHASE PEPTIDE SEPARATIONS

Learn how column chemistry and mobile phase affects peptide separation and selectivity. Review the factors that synergistically work to obtain resolution.

DEVELOPING REVERSE-PHASE PEPTIDE SEPARATIONS

Involved in developing oligonucleotide therapeutics? Oligonucleotides have attracted increasing attention in the development of direct therapeutic agents against a wide range of disease conditions.
The analysis of oligonucleotide therapeutics requires robust and accurate analytical characterization to confirm identity, and to determine purity, quality, and strength.
<h5>During this webinar, Thermo Scientific’s Ken Cook will examine developments and tips for:</h5>
<ul>
<li>Column chemistry to fully sequence a 100mer by LCMS/MS and HCD fragmentation
</li>
<li>A method to monitor IVT reactions by rapid UHPLC
</li>
<li>Observe disterio-isomer profiles in siRNA and ASO RNA
</li>
<li>Change separation selectivity in ion exchange and ion pair reverse phase chromatography of oligonucleotides with eluent choice and oligonucleotides with pH
</li>
<li>Methods for strand ratio determination with double stranded oligonucleotides
</li>
</ul>
Thermo Scientific has over 20 years of innovations and publications around the separation of oligonucleotides, please join our webinar to learn how the DNAPac family of Ion Exchange and Reversed Phase columns can optimize and enhance your nucleic acid separations. The session will finish with a short Q&amp;A and include a live chat with an expert.
<blockquote>
Presenter: Dr. Ken Cook
</blockquote>
<blockquote>
Dr. Ken Cook began his career in academia as a Biochemistry lecturer focused on protein chemistry and metabolism. Today, with well over 30 years’ industry experience working for Dionex, then Thermo Fisher Scientific, his vast knowledge supporting and developing solutions within chromatography brand him a bio-separations expert. 
</blockquote>
<blockquote>
Currently, his work involves the support of Bio-Pharmaceutical applications to characterise protein and oligonucleotide-based bio-therapeutics. This involves ongoing collaborations with the Biopharmaceutical industry and academia. Methods for the characterisation of therapeutic proteins include peptide mapping by LC/HRMS. Developments in charged variant analysis including novel coupling to MS, Glycan analysis, Aggregate analysis and on-line process monitoring. Gene therapy characterisation is a growing interest which has had much success. 
</blockquote>
<blockquote>
Given his immense experience, it is an honour to have Ken share his knowledge.
</blockquote>

Avantor: New Developments and Tips for Oligonucleotide Analyses

New Developments and Tips for Oligonucleotide Analyses

Topics: Column chemistry to fully sequence a 100mer by LCMS/MS and HCD fragmentation; A method to monitor IVT reactions by rapid UHPLC...

Superficially porous particles (SPPs) have advantages over traditional fully porous particles (FPPs) when packed into columns for chromatographic separation of biomolecules. Due to the presence of a solid silica core, analytes have a smaller distance to travel within a particle, thus minimizing diffusion due to mass transfer effects. Combined with a large pore diameter and a thin, porous shell, these particles can yield highly efficient peaks even for large proteins such as monoclonal antibodies.
In this webinar, you will learn about the advantages of using SPP-packed BIOshell™ columns for various large molecule separation challenges. Aspects of peptide mapping, intact analysis and middle-up analysis will be reviewed, and strategies for improving these assays will be provided. In addition, a unique 1.5 mm I.D. column geometry and its advantages in improving sensitivity and making methods more sustainable will be reviewed. Finally, strategies for characterizing oligonucleotides will be discussed in relation to how BIOshell™ can assist in analyzing this class of biomolecule.
Key learning objectives
<ul>
<li>Discover the importance of SPP particle architecture (pore size and shell thickness) and how it contributes to high-efficiency separations of biomolecules
</li>
<li>Explore how column chemistry can play a role in improving peptide mapping accuracy
</li>
<li>Learn how extra column dispersion can affect chromatographic performance and discover strategies to mitigate it
</li>
</ul>
Who should attend?
<ul>
<li>R&amp;D scientists/method developers (from Pharma, Clinical, University)
</li>
<li>R&amp;D supervisors/managers (from Pharma, Clinical, University)
</li>
<li>QC scientists (from Pharma, Clinical, University)
</li>
<li>QC managers (from Pharma, Clinical, University)
</li>
</ul>
<blockquote>
Presenter: Cory E. Muraco (MilliporeSigma)
</blockquote>
<blockquote>
Cory Muraco is the Biomolecule Workflows Product Manager at MilliporeSigma, Bellefonte, USA. Muraco joined the company in 2013, starting in the Chemical Standards division, developing and validating analytical methods for testing the purity of certified reference materials using GC and LC methods. In 2022, Muraco started his current role, where he is tasked with supporting the design, development, and execution of the marketing and R&amp;D strategies around MilliporeSigma’s bioanalytical strategy.
</blockquote>
<blockquote>
Presenter: Jemima Arnold (Editorial Team, SelectScience)
</blockquote>
<blockquote>
Jemima studied Cellular and Molecular Medicine at the University of Bristol, UK, and as a member of the Editorial team, she now plays an integral role in shaping the content on SelectScience.
</blockquote>

Merck: Breaking the Boundaries of Biomolecule Separation with BIOshell™ UHPLC Columns

Breaking the Boundaries of Biomolecule Separation with BIOshell™ UHPLC Columns

Advantages of using SPP-packed BIOshell™ columns for various large molecule separation challenges.

Biomolecule Separation with BIOshell UHPLC Columns

Nitrosamines have been compounds of interest to the pharmaceutical industry in recent years due to the mutagenic nature of these impurities. N-Nitrosodimethylamine (NDMA) was the first of these impurities to be highlighted as hazardous to human health. Eventually, the list expanded to many nitrosamines in various drug substances and drug products.
More recently, nitroso drug substance-related impurities (NDSRI) became a major concern for the industry. As per regulations, any possibility for formation of nitroso impurities during synthesis or the manufacturing process of the drug substance must be evaluated, and steps must be taken to identify, quantify, and minimize or eliminate such impurities. Therefore, analytical laboratories require robust methods for detection and quantitation of these impurities.
By attending this webinar session, you will understand:
<ul>
<li>What nitrosamines are and why they have been discussed in recent years</li>
<li>Which parameters are critical in nitrosamine analysis in pharmaceutical drugs</li>
<li>What nitroso drug substance-related impurities (NDSRI) are and why it is critical to evaluate and eliminate these impurities</li>
<li>Why selectivity is too critical in nitrosamine analysis</li>
<li>Why the presence of alternative chemistries is crucial in handling current and upcoming nitrosamine challenges</li>
<li>The impact of column dimensions in achieving optimal chromatography for nitrosamines</li>
<li>How different Agilent LC chemistries help in developing robust methods for nitrosamines</li>
<li>The best practices for nitrosamine analysis</li>
</ul>
<blockquote>
Presenter: Manu Grover (HPLC Columns Business Development Manager, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Postgraduate in Pharmacy from Manipal Academy of Higher Education, India
<ul>
<li>Have more than 21 years of chromatography experience</li>
<li>Have worked in field of Manufacturing and Analytical Research to support IND, NDA and ANDA filings in pharmaceutical companies like Dr. Reddy&#39;s, &gt; &gt; - Panacea Biotec &amp; Ozone Pharmaceuticals.</li>
</ul>
</blockquote>
<blockquote>
During the Professional journey have:
<ul>
<li>Developed and validated many analytical methods on HPLC, GC, Particle sizing, DSC, pXRD, LC/MS etc.</li>
<li>Successfully filed multiple analytical Dossiers in US and EU market.</li>
<li>Filed analytical methods to USP</li>
<li>Transferred analytical methods</li>
<li>Handled multiple US-FDA audits</li>
<li>Trained many scientists on “Data integrity and compliance” during sessions organized by Pharmexcil-Govt. of India</li>
</ul>
</blockquote>
<blockquote>
The current role with Agilent sales team and pharmaceutical scientists share market updates, trends, expertise related to Agilent portfolio of columns and supplies. Also, ensure effective implementation of Agilent solutions in the lab.
</blockquote>
<blockquote>
Presenter: Chander Mani (Field Technical Specialist-LC Columns, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
After completing M.Sc. (Hons.) in Chemistry at Punjab University, Mr. Chander Mani started his career at Panacea Biotec in Analytical &amp; Bioanalytical department of new drug discovery research and developed several methods for analytical and bioanalytical, and ADME/DMPK related studies. He also worked for several LC-MS based methods for the analysis of textiles and environmental analytes of interests during his stay in Bureau Veritas. For the past more than 10 years at Agilent, Chander has been actively involved in providing LC-MS based application support to pharmaceuticals, food safety and environmental based applications in his various roles. Recently he has worked extensively for Nitrosamine application in various pharmaceuticals using both LCTQ and LCQTOF platforms and published various application notes.
</blockquote>

Agilent Technologies: Nitrosamines: Why Is Column Chemistry Critical?

Nitrosamines: Why Is Column Chemistry Critical?

Nitrosamines have been compounds of interest to the pharmaceutical industry in recent years due to the mutagenic nature of these impurities. 

For therapeutic antibodies and emerging gene-based medicines, light scattering techniques provide multi-attribute quantification (MAQ) and hence play a critical role in product and process development as well as quality control.
Size-exclusion chromatography with multi-angle light scattering (SEC-MALS) is employed throughout the development cycle of the protein therapeutics for bioanalytical characterization.
In addition, SEC-MALS offers a platform method for quantifying multiple quality attributes of AAV-delivered gene therapy products including titer, payload and aggregate content as well as extended biophysical characterization. In the webinar, we share some case studies using XBridge Premier BEH SEC columns combined with light scattering as a platform approach applied to these different pharmaceutical analytes.
<blockquote>
Presenter: Leo Liu, Ph.D. (Application Scientist, Waters-Wyatt Technology)
</blockquote>

Waters Corporation: Successful SEC-MALS analysis of proteins and AAVs

Successful SEC-MALS analysis of proteins and AAVs

Case studies using XBridge Premier BEH SEC columns combined with light scattering as a platform approach applied to these different pharmaceutical analytes.

LCMS webinars focusing on Consumables - page 19

Nitrosamines: Why Is Column Chemistry Critical?

Advances in Food & Beverage Analysis 2023

Successful SEC-MALS analysis of proteins and AAVs

Breaking the Boundaries of Biomolecule Separation with BIOshell™ UHPLC Columns

New Developments and Tips for Oligonucleotide Analyses

PRINCIPLES AND PRACTICAL STEPS IN DEVELOPING REVERSE-PHASE PEPTIDE SEPARATIONS

Importance of CRM-grade Karl Fischer Standards for Accurate KF Titration

Chiral Chromatography Screening 101

Scale Up with Confidence: Column Selection for Preparative HPLC

Chiral Chromatography Screening 101

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