Meeting EU Drinking Water Standards: The Critical Role of Sample Prep in Trace Contaminant Analysis

<h3>Charged for Action: The Hidden Secrets of AEX Oligonucleotide Analysis</h3>Oligonucleotides—short, well-defined fragments of DNA or RNA—have become indispensable tools in modern life sciences. They underpin cutting-edge applications in molecular diagnostics, gene therapy, and pharmaceutical development. Before oligonucleotides can be confidently used in research or clinical settings, however, their quality must be rigorously assessed. Purity, sequence integrity, length distribution, and chemical modifications all play a decisive role in their performance.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_2_45eee54fa0.jpg" alt="KNAUER: Oligos Made Easy - Part 2: AEX" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_2_45eee54fa0.jpg 245w," sizes="100vw" width="1534" height="711">Among the analytical techniques available today, anion exchange chromatography (AEX) stands out as a robust and highly informative method for characterizing oligonucleotides. By exploiting their intrinsic negative charge, AEX provides detailed insight into product composition and impurity profiles that are difficult to obtain by other approaches.<blockquote><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/6808">Part 1 of the Oligos series: A Practical Guide to Oligonucleotide Production – From Concept to Final Product</a></blockquote><h4>How Scientists Read Oligonucleotides Using Charge</h4>At the core of AEX lies a simple but powerful principle: oligonucleotides carry a negatively charged phosphate backbone. This charge increases in a predictable way with strand length and, to a lesser extent, sequence composition. Anion exchange chromatography uses this property to separate oligonucleotides based on differences in charge strength and interaction with a positively charged stationary phase.As a result, AEX has become one of the most widely used analytical tools for evaluating oligonucleotide quality. It allows scientists to distinguish full-length products from truncated species, degradation products, or closely related variants—often with single-nucleotide resolution.<h4>Why Ion Exchange Works: Binding, Retention, and Release</h4>Ion exchange chromatography (IEX) relies on electrostatic interactions between analytes and a charged stationary phase. In the case of oligonucleotides, anion exchange is used, where negatively charged molecules interact with positively charged functional groups on the resin—most commonly quaternary amines.The system consists of two main components:<ul><li>Stationary phase: A positively charged resin that binds anionic analytes.</li><li>Mobile phase: An aqueous buffer system, typically combined with a salt gradient, that controls both pH and elution strength.</li></ul>Retention in AEX is governed primarily by charge. Molecules with weaker overall charge interact less strongly with the stationary phase and elute earlier, while more highly charged oligonucleotides bind more tightly and require stronger elution conditions.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_1_IEX_overview_including_elution_order_dependency_on_analyte_charge_3419ad3075.jpg" alt="KNAUER: Oligos Made Easy - Part 2 AEX: Figure 1 IEX overview including elution order dependency on analyte charge." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_1_IEX_overview_including_elution_order_dependency_on_analyte_charge_3419ad3075.jpg 245w," sizes="100vw" width="1583" height="654"><h4>The Five-Step Workflow of Ion Exchange Chromatography</h4>AEX separations generally follow a well-established sequence of steps:<ol><li>Column equilibration The column is conditioned with the starting buffer until the baseline and pH are stable. This ensures that all charged sites on the resin are ready for interaction.</li><li>Sample loading Samples, prepared in the starting buffer, are introduced under conditions that promote binding of the target oligonucleotides while minimizing retention of unwanted impurities.</li><li>Washing The column is washed with the starting buffer to remove uncharged or weakly interacting components. The baseline stabilizes as these species are flushed away.</li><li>Elution Bound oligonucleotides are released using a salt or pH gradient. Increasing ionic strength introduces competing ions that displace the analytes from the resin. Weakly bound species elute first; strongly charged oligonucleotides elute later.</li><li>Regeneration and re-equilibration A high-salt buffer removes any remaining bound material. The column is then returned to starting conditions in preparation for the next analysis.</li></ol><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_2_Five_steps_of_IEX_procedure_in_blue_outlined_using_an_example_chromatogram_in_red_38dd70b1b1.jpg" alt="KNAUER: Oligos Made Easy - Part 2 AEX: Figure 2 Five steps of IEX procedure (in blue), outlined using an example chromatogram (in red)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_2_Five_steps_of_IEX_procedure_in_blue_outlined_using_an_example_chromatogram_in_red_38dd70b1b1.jpg 245w," sizes="100vw" width="1583" height="674"><h4>Why AEX Is Especially Effective for Oligonucleotides</h4>The repeating phosphate backbone of oligonucleotides gives rise to a strong and uniform anionic character across a wide pH range (typically pH 7–9). This makes oligonucleotides exceptionally well suited for anion exchange separations.Key factors influencing AEX behavior include:<ul><li>Charge density: Longer oligonucleotides carry more negative charges and therefore exhibit stronger retention.</li><li>Resin chemistry: Strong and weak anion exchangers differ in functional groups and pH stability, influencing selectivity and robustness.</li><li>Buffer composition: The choice of buffering ions and salt gradients directly affects elution strength and resolution.</li></ul>Salt gradients—commonly based on chloride ions—compete with the oligonucleotide backbone for binding sites on the resin. By carefully tuning gradient slope and composition, analysts can achieve highly reproducible and finely resolved separations.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_3_Ionic_interactions_and_p_H_influence_on_Anion_Exchange_Chromatography_AEX_612e231ba4.jpg" alt="KNAUER: Oligos Made Easy - Part 2 AEX: Figure 3 Ionic interactions and pH influence on Anion Exchange Chromatography (AEX)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_3_Ionic_interactions_and_p_H_influence_on_Anion_Exchange_Chromatography_AEX_612e231ba4.jpg 245w," sizes="100vw" width="1547" height="593"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_4_AEX_buffer_selection_and_gradient_strategy_chromatogram_with_red_buffer_gradient_curve_53fd1bb11b.jpg" alt="KNAUER: Oligos Made Easy - Part 2 AEX: Figure 4 AEX buffer selection and gradient strategy (chromatogram with red buffer gradient curve)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_4_AEX_buffer_selection_and_gradient_strategy_chromatogram_with_red_buffer_gradient_curve_53fd1bb11b.jpg 245w," sizes="100vw" width="1600" height="327"><h4>AEX as the Gold Standard for Oligonucleotide Separation</h4>Anion exchange chromatography has become the method of choice for both analytical and preparative oligonucleotide workflows. Its advantages include:<ul><li>High resolving power: Closely related impurities, including n–1 or n–2 species, can often be separated and quantified.</li><li>Predictable retention behavior: In many cases, retention time correlates linearly with oligonucleotide length, simplifying identification.</li><li>Compatibility with modified oligonucleotides: Even chemically modified sequences retain their anionic nature, allowing AEX to resolve both products and related impurities.</li><li>Excellent control via gradient elution: Salt gradients provide precise tuning of selectivity and resolution.</li></ul>Typically, shorter or degraded oligonucleotides elute at lower ionic strength, while full-length products with higher charge density appear later in the chromatogram.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_5_AEX_Advantages_and_Challenges_7835521e34.jpg" alt="KNAUER: Oligos Made Easy - Part 2 AEX: Figure 5 AEX Advantages and Challenges." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Oligos_Made_Easy_Part_2_AEX_Figure_5_AEX_Advantages_and_Challenges_7835521e34.jpg 245w," sizes="100vw" width="1535" height="707"><h4>Final Perspective: Mastering AEX with Confidence</h4>Anion exchange chromatography may appear complex at first, but with thoughtful optimization of pH, buffer composition, and gradient conditions, it becomes a highly precise and reliable tool for oligonucleotide analysis. When properly applied, AEX delivers sharp peaks, excellent resolution, and robust performance—even for challenging sequences and modifications.For laboratories developing or refining oligonucleotide workflows, AEX offers both analytical depth and operational confidence.<blockquote>If you would like to discuss AEX method development or optimization for oligonucleotides, feel free to contact us at sales@knauer.net. More insights into practical oligonucleotide analysis will follow in our “Oligos Made Easy” series.For technical questions or in-depth discussion, the author can be reached at kindler@knauer.net</blockquote>

Oligos Made Easy - Part 2: AEX

Although modern agriculture needs to be based on accurate real-time data on soil, plant, and environmental conditions, affordable, sufficiently sensitive, and robust monitoring devices for this purpose are currently missing. According to scientists, low-cost sensors based on new smart materials and printing technologies offer a suitable solution. The results of multidisciplinary research thus far and proposals for the development of these devices have been presented by researchers from Czechia, Great Britain, Spain, and the USA in a review article in the prestigious journal <a target="_blank" rel="noopener noreferrer" href="https://www.nature.com/articles/s41467-026-68778-6#Abs1">Nature Communications</a>.“Sensor technologies for monitoring plant health are still in their infancy. Only simple sensors capable of monitoring basic parameters such as pH, soil moisture, or temperature are commonly available on the market. However, if farmers are to face current challenges, including climate change, and ensure sufficient food for humanity, they need much more effective tools that will enable them to monitor, for example, various pathogens, including bacteria and fungi. In our opinion, a suitable solution is a combination of new smart materials and printing for the production of inexpensive, durable, and scalable materials,” said the article’s first author, David Panáček from CATRIN, who worked on the study during his internship at Imperial College London.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CATRIN_Soucasne_senzory_nestaci_Vedci_navrhuji_novou_cestu_ke_sledovani_zdravi_rostlin_b4014952a3.jpg" alt="CATRIN: David Panáček" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CATRIN_Soucasne_senzory_nestaci_Vedci_navrhuji_novou_cestu_ke_sledovani_zdravi_rostlin_b4014952a3.jpg 208w," sizes="100vw" width="1536" height="1152">Sensors for monitoring plant health, for example, lag behind similar devices used in human medicine. According to the authors, advances in materials science, which will enable the development of scalable sensor technologies, play a key role in this potential shift. “Printing techniques, including inkjet printing, screen printing, aerosol printing, 3D printing, and direct laser writing, offer flexible ways to produce flexible sensors, large-area sensors, and sensors integrated directly into plants. The review article summarizes recent advances in printable low-dimensional materials for agricultural sensors, analyzes their physico-chemical properties in relation to sensor performance, and discusses key challenges and future opportunities requiring interdisciplinary integration,” said one of the corresponding authors, Michal Otyepka.The research brought together materials scientists, chemists, biologists, sensing experts, and printing technology specialists. Materials research and the use of graphene-based smart materials were led by scientists from CATRIN at Palacký University and VŠB-Technical University of Ostrava. Plant biologists from CATRIN contributed their knowledge of plant development, their responses to stress conditions, and the monitoring of their properties. Researchers from Imperial College London took care of the electronics, while representatives from<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/companies/36"> CEITEC – VUT</a> focused on printing technologies. The team also included leading experts in sensing from the Catalan Institute of Nanoscience and Nanotechnology in Barcelona, and Joseph Wang of the University of California San Diego, the “father of sensing and electrochemistry,” also contributed his extensive knowledge.“This is a groundbreaking study on this topic, which has managed to attract some truly big names in their respective fields. Last but not least, the study demonstrates that interdisciplinarity at CATRIN gives rise to completely new and promising research topics, such as plant sensing and its use for studying plant-environment interactions and smart agriculture,” added another corresponding author, Nuria De Diego.

Current sensors are not good enough. Scientists propose a new way to monitor plant health

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The Czech Advanced Technology and Research Institute (CATRIN) at Palacký University is a cutting-edge scientific hub dedicated to advancing research in the fields of nanotechnology, biotechnology, and biomedicine. At its core, CATRIN boasts outstanding scientific teams, featuring international researchers. We emphasize interdisciplinarity, foster global collaborations, and work to translate our research findings into practical applications.

CATRIN

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

Organomation

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

Thermo Scientific Acclaim Mixed Mode WAX-1 HPLC Columns

When you need powerful selectivity control for the separation of anionic molecules, use Thermo Scientific Acclaim Mixed-Mode WAX-1 LC columns. 

When you need powerful selectivity control for the separation of anionic molecules, use Thermo Scientific™ Acclaim™ Mixed-Mode WAX-1 LC columns. The silica-based stationary phase features a hydrophobic alkyl chain with an ionizable terminus that provides both hydrophobic reversed-phase and weak anion-exchange properties. This unique chemistry produces a multimode separation mechanism for simultaneous separation of acidic, basic, and neutral molecules. The selectivity is fully adjustable through changes to ionic strength, pH, or organic solvent content.<h5>Ideal Selectivity for Separating Anionic Molecules</h5><ul><li>Multi-mode retention mechanism: reversed-phase, weak anion-exchange, and HILIC modes</li><li>Differentiation of molecules with similar hydrophobicities, such as hydrophilic organic acids</li><li>Selectivity orthogonal to reversed-phase columns</li><li>Excellent column efficiency and peak symmetry</li><li>Stable between pH 2.5 and 7.5</li><li>Available in 3 and 5μm particle sizes with an average pore diameter of 120Å</li></ul><h4>Specifications</h4><ul><li>Column type: Mixed mode</li><li>Max. Pressure: 5800 psi (400 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: Hydrophobic Alkyl Chain with an Ionizable Terminus</li><li>USP Type: L78</li><li>Surface Area: 300 m²/g</li><li>Temperature: 50°C</li><li>Phase: Reversed Phase, Ion Exchange, HILIC</li><li>Pore Size: 120 Å</li><li>pH: 2.5 to 7.5</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim Mixed Mode WCX-1 HPLC Columns

Separate cationic molecules with powerful adjustable selectivity control using Thermo Scientific Acclaim Mixed-Mode WCX-1 LC columns.

Separate cationic molecules with powerful adjustable selectivity control using Thermo Scientific™ Acclaim™ Mixed-Mode WCX-1 LC columns. The silica-based stationary phase features a hydrophobic alkyl chain with a carboxyl terminus that provides both hydrophobic reversed-phase and weak cation-exchange properties. This multimode separation mechanism delivers simultaneous separation of basic and neutral compounds. By independently or simultaneously tuning the mobile phase ionic strength, pH, and organic modifier, you can control the selectivity of ionizable and neutral compounds.<h5>Retains and Separates Highly Hydrophilic to Highly Hydrophobic Basic Molecules</h5><ul><li>Multimode retention mechanism: reversed-phase, weak cation-exchange, anion-exclusion, and HILIC modes</li><li>Selectivity complementary to C18 reversed-phase columns</li><li>Efficient primary column for a variety of basic analytes; also an ideal column for secondary methods development</li><li>Versatile in applications that require different selectivities</li><li>Symmetrical peak shapes and excellent efficiency</li><li>Stable between pH 2.5 and 7.5</li><li>Available in 3 and 5μm particle sizes with an average pore diameter of 120Å</li></ul><h4>Specifications</h4><ul><li>Column type: Mixed mode</li><li>For use with: RPLC, Cation Exchange, Ion-Exclusion, HILIC</li><li>Max. Pressure: 6000 psi (415 bar)</li><li>Packing Material: Silica</li><li>Stationary phase: Hydrophobic Alkyl Chain with a Carboxyl Terminus</li><li>USP Type: L85</li><li>Surface Area: 300 m²/g</li><li>Temperature: 50°C</li><li>Phase: Reversed Phase, Ion Exchange, Ion Exclusion, HILIC</li><li>Pore Size: 120 Å</li><li>pH: 2.5 to 7.5</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim Mixed Mode HILIC-1 HPLC Columns

Get all the advantages of reversed-phase (RP) and hydrophilic interaction liquid chromatography (HILIC) in one column with the Thermo Scientific Acclaim Mixed-Mode HILIC-1 column.

Get all the advantages of reversed-phase (RP) and hydrophilic interaction liquid chromatography (HILIC) in one column with the Thermo Scientific™ Acclaim™ Mixed-Mode HILIC-1 column. The high-efficiency, silica-based, mixed-mode stationary phase consists of a hydrophobic alkyl chain with a diol group at the terminus. The hydrophobic moiety supplies reversed-phase retention and the terminal diol group facilitates hydrophilic interactions. This unique combination provides adjustable selectivity with unsurpassed resolution and peak symmetry for a variety of both polar and nonpolar molecules.<h5>Separates Both Polar and Nonpolar Molecules with Selectivity Complementary to RP Columns</h5><ul><li>Operates in both RP and HILIC modes</li><li>Retains highly polar molecules</li><li>Covers broader application range than conventional diol-based columns, including nonionic ethoxylated surfactants, drug metabolites, lipids, and polyethylene glycols (PEGs)</li><li>Stable between pH 2.5 and 7.5</li><li>Available in 3 and 5μm particle sizes with an average pore diameter of 120Å</li></ul><h4>Specifications</h4><ul><li>Column type: Mixed mode</li><li>For use with: HILIC</li><li>Max. Pressure: 5800 psi (400 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: Hydrophobic Alkyl Chain with a Diol Group</li><li>USP Type: N/A</li><li>Surface Area: 300 m²/g</li><li>Temperature: 50°C</li><li>Phase: Reversed Phase, HILIC</li><li>Pore Size: 120 Å</li><li>pH: 2.5 to 7.5</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim SEC-1000 HPLC Columns

Separate water-soluble polymers and oligomers with Thermo Scientific™ Acclaim™ SEC-1000 Size Exclusion HPLC Columns. 

Separate water-soluble polymers and oligomers with Thermo Scientific™ Acclaim™ SEC-1000 Size Exclusion HPLC Columns. These resin-based, high-performance, size-exclusion chromatography columns cover molecular weight range: 7μm, 1000Å. The combination of a proprietary mono-dispersed multi-pore hydrophilic resin and small particle size provides high-resolution and good linearity of the calibration curve with no inflection points for accurate, reliable analysis of a variety of water-soluble polymers.The Acclaim SEC-1000 LC column is calibrated from 1,000 to 1,000,000 Daltons and can characterize high molecular weight polymers.<h5>High-Performance Analysis of Water-Soluble Polymers</h5><ul><li>High-resolution analysis at reduced solvent consumption in available 4.6 x 300mm dimension</li><li>Stable surface bonding leads to low column bleed and enhances compatibility with UV, RI, MS, ELSD and Thermo Scientific Dionex™ Corona™ Charged Aerosol Detectors</li></ul><h4>Specifications</h4><ul><li>Column type: Size exclusion</li><li>Endcapped: yes</li><li>Max. Pressure: 600 psi (40 bar)</li><li>Packing Material: Spherical, Fully Porous Polymer</li><li>Temperature: 60°C</li><li>Phase: Size exclusion</li><li>Pore Size: 1000 Å</li><li>pH: 2 to 12</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim SEC-300 HPLC Columns

Separate water-soluble polymers and oligomers with Thermo Scientific Acclaim SEC-300 Size Exclusion Chromatography HPLC Columns. 

Separate water-soluble polymers and oligomers with Thermo Scientific™ Acclaim™ SEC-300 Size Exclusion Chromatography HPLC Columns. These resin-based, high-performance, size-exclusion chromatography columns cover molecular weight range: 5μm, 300Å. The combination of a proprietary mono-dispersed multi-pore hydrophilic resin and small particle size provides high-resolution and good linearity of the calibration curve with no inflection points for accurate, reliable analysis of a variety of water-soluble polymers.The Acclaim SEC-300 column is calibrated from 100 to 50,000 Daltons and offers good resolution for lower molecular weight polymers or oligomers.<h5>High-Performance Analysis of Water-Soluble Polymers</h5><ul><li>High-resolution analysis at reduced solvent consumption in available 4.6 x 300mm dimension</li><li>Stable surface bonding leads to low column bleed and enhances compatibility with UV, RI, MS, ELSD and Thermo Scientific Dionex™ Corona™ Charged Aerosol Detectors</li></ul><h4>Specifications</h4><ul><li>Column type: Size exclusion</li><li>Endcapped: yes</li><li>Max. Pressure: 1200 psi (80 bar)</li><li>Packing Material: Spherical, Fully Porous Polymer</li><li>Temperature: 60°C</li><li>Phase: Size exclusion</li><li>Pore Size: 300 Å</li><li>pH: 2 to 12</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim VANQUISH C18 UHPLC Columns

Achieve even greater power of separation, speed, and throughput using Thermo Scientific Acclaim VANQUISH C18 UHPLC columns.

Achieve even greater power of separation, speed, and throughput using Thermo Scientific™ Acclaim™ VANQUISH™ C18 UHPLC columns. These reversed phase columns were developed in conjunction with the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=40&amp;manufacturerItems=3&amp;search=vanquish">Vanquish UHPLC system</a> to take advantage of the system's extended pressure capabilities and robustness. The result is a new level of separation, speed and throughput that solve analytical challenges in liquid chromatography (LC) and LC-MS analyses.<h5>Delivering Powerful Separations</h5>The expanded range of Thermo Scientific™ Accucore™ Vanquish™ and Acclaim VANQUISH UHPLC columns offer a wider range of selectivity and format options to satisfy different UHPLC application requirements. They deliver:<ul><li>Better Separations: high efficiency enables separation of very complex mixture</li><li>More Results: High efficiency at high flow rates</li><li>Easier Interactions: Seamless workflow solution, for simple and easy separations</li><li>Wider Capabilities: Wide range of column selectivities and formats</li></ul><h4>Specifications</h4><ul><li>Column type: Reversed Phase</li><li>Endcapped: yes</li><li>Max. Pressure: 21756 psi (1500 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: C18</li><li>USP Type: L1</li><li>Surface Area: 300 m2/g</li><li>Temperature: 60°C</li><li>Carbon load: 18%</li><li>Phase: Reversed Phase</li><li>Pore Size: 120 Å</li><li>pH: 2 to 8</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Acclaim VANQUISH Polar Advantage II UHPLC Columns

Achieve even greater power of separation, speed, and throughput of polar and nonpolar compounds in a single run using Thermo Scientific Acclaim VANQUISH PA2 UHPLC columns.

Achieve even greater power of separation, speed, and throughput of polar and nonpolar compounds in a single run using Thermo Scientific™ Acclaim™ VANQUISH™ PA2 UHPLC columns. These reversed-phase columns were developed in conjunction with the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=40&amp;manufacturerItems=3&amp;search=vanquish">Vanquish UHPLC system</a> to take advantage of the system's extended pressure capabilities and robustness. The result is a new level of separation, speed and throughput that solve analytical challenges in liquid chromatography (LC) and LC-MS analyses. These Polar Advantage II columns provide selectivity that is complementary to conventional C18 columns.<h5>Delivering Powerful Separations</h5>The expanded range of Thermo Scientific™ Accucore™ Vanquish™ and Acclaim VANQUISH UHPLC columns offer a wider range of selectivity and format options to satisfy different UHPLC application requirements. They deliver:<ul><li>Better Separations: high efficiency enables separation of very complex mixture</li><li>More Results: High efficiency at high flow rates</li><li>Easier Interactions: Seamless workflow solution, for simple and easy separations</li><li>Wider Capabilities: Wide range of column selectivities and formats</li></ul><h4>Specifications</h4><ul><li>Column type: Reversed Phase</li><li>Endcapped: yes</li><li>For use with: LC/MS and RSLC</li><li>Max. Pressure: 21756 psi (1500 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: Polar</li><li>USP Type: L60</li><li>Surface Area: 300 m2/g</li><li>Temperature: 60°C</li><li>Carbon load: 17%</li><li>Phase: Reversed Phase</li><li>Pore Size: 120 Å</li><li>pH: 1.5 to 10</li></ul><h4>About the Acclaim Family of HPLC Columns</h4>Achieve the high standards set by modern HPLC and LC/MS methods with the Acclaim family of reversed-phase columns. These silica-based columns with advanced column bonding and endcapping technologies provide complementary selectivity, high column efficiencies, and ultra-high resolution for a wide variety of applications.<ul><li>Broad spectrum of stationary phases, including conventional C8 and C18 phases, polar embedded phases, and specialty phases including wide-pore, are available to meet your specific application needs</li><li>Performance tested to ensure high quality and reliability for pharmaceutical, biopharmaceutical, environmental, food, and other industrial chromatographic separations</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg" alt="Thermo Fisher Scientific: Broad range of HPLC and UHPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Acclaim_column_Broad_range_of_HPLC_and_UHPLC_columns_2ec9c98a86.jpg 191w," sizes="100vw" width="1172" height="958">

Thermo Scientific Syncronis C18 Columns

Achieve repeatable and consistent liquid chromatography (LC) separations using Thermo Scientific™ Syncronis™ C18 columns. 

Achieve repeatable and consistent liquid chromatography (LC) separations using Thermo Scientific™ Syncronis™ C18 columns. Highly pure, high surface area silica and dense stationary phase coverage minimize secondary interactions and ensure robust, high-resolution separations.&nbsp;Double end-capping provides extra surface coverage and inertness toward basic compounds. Manufactured and rigorously tested in ISO 9000 facilities, these columns are designed to meet a range of analytical needs including fast method development, quantitative analysis, and quality control.<h5>Highly Reproducible Separations</h5><ul><li>Rigorously tested stationary phase bonded to the highest quality silica ensures consistent, predictable LC performance.</li></ul><h5>Excellent Peak Shapes for Enhanced Resolution and Sensitivity</h5><ul><li>Dense surface coverage of silica minimizes secondary interactions and peak tailing</li><li>Double endcapped for extra surface coverage</li></ul><h5>Exceptional Column-to-Column Consistency</h5><ul><li>Manufactured, packed, and tested in ISO-9000-accredited facilities</li><li>Every column individually tested to meet stringent retention, efficiency, and peak symmetry specifications</li><li>Enhanced automated packing process</li></ul><h5>Available in Three Particle Sizes</h5><ul><li>1.7 μm for rapid ultrahigh-performance LC (UHPLC) separations, and 3 μm and 5 μm for more traditional HPLC analysis</li></ul><h4>Specifications</h4><ul><li>Column type: Reversed Phase</li><li>Endcapped: yes</li><li>Max. Pressure: 5800 psi (400 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: C18</li><li>USP Type: L1</li><li>Surface Area: 320 m2/g</li><li>Temperature: 60°C</li><li>Carbon load: 16%</li><li>Phase: Reversed Phase</li><li>Pore Size: 100 Å</li><li>pH: 2 to 9</li></ul><h4>Syncronis HPLC and UHPLC Columns</h4><h5>Enter a new world of chromatography</h5>When developing a new method, one of the most important goals for the chromatographer is to achieve a consistent, reproducible separation. This makes selecting an HPLC column that offers highly-reproducible results essential to attaining this goal.<h5>Features of Syncronis columns</h5>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:<ul><li>Highly-pure, high-surface-area silica</li><li>Dense bonding and double endcapping</li><li>Stringent manufacturing and testing protocols</li></ul>

Thermo Scientific Syncronis C8 HPLC Columns

Improve the consistency and reliability of your liquid chromatography (LC) separations using Thermo Scientific™ Syncronis™ C8 LC columns.

Improve the consistency and reliability of your liquid chromatography (LC) separations using Thermo Scientific™ Syncronis™ C8 LC columns. High-purity, high surface area silica and dense stationary phase coverage minimize secondary interactions and deliver reproducible, high-efficiency separations.&nbsp;Double end-capping provides extra surface coverage and inertness toward basic compounds. Manufactured and rigorously tested in ISO 9000 facilities, these columns are designed to meet a range of analytical needs including fast method development, quantitative analysis, and quality control where less retention is required than when using a C18 column.<h5>Excellent Peak Shapes for Enhanced Resolution and Sensitivity</h5><ul><li>Dense surface coverage of silica minimizes secondary interactions and peak tailing</li><li>Double endcapped for extra surface coverage</li></ul><h5>Exceptional Column-to-Column Consistency</h5><ul><li>Manufactured, packed, and tested in ISO-9000-accredited facilities</li><li>Every column individually tested to meet stringent retention, efficiency, and peak symmetry specifications</li><li>Enhanced automated packing process</li></ul><h5>Lower Hydrophobic Retention</h5><ul><li>Recommended for moderately hydrophobic analytes or for when a less hydrophobic phase provides optimum retention</li></ul><h5>Available in Three Particle Sizes</h5><ul><li>1.7 μm for rapid ultrahigh-performance LC (UHPLC) separations, and 3 μm and 5 μm for more traditional HPLC analysis</li></ul><h4>Specifications</h4><ul><li>Column type: Reversed Phase</li><li>Endcapped: yes</li><li>Max. Pressure: 5800 psi (400 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: C8</li><li>USP Type: L7</li><li>Surface Area: 320 m2/g</li><li>Temperature: 60°C</li><li>Carbon load: 10%</li><li>Phase: Reversed Phase</li><li>Pore Size: 100 Å</li><li>pH: 2 to 8</li></ul><h4>Syncronis HPLC and UHPLC Columns</h4><h5>Enter a new world of chromatography</h5>When developing a new method, one of the most important goals for the chromatographer is to achieve a consistent, reproducible separation. This makes selecting an HPLC column that offers highly-reproducible results essential to attaining this goal.<h5>Features of Syncronis columns</h5>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:<ul><li>Highly-pure, high-surface-area silica</li><li>Dense bonding and double endcapping</li><li>Stringent manufacturing and testing protocols</li></ul>

Thermo Scientific Syncronis HILIC HPLC Columns

Ensure consistent, predictable separations of polar and hydrophilic analytes with Thermo Scientific™ Syncronis™ HILIC LC Columns. 

Ensure consistent, predictable separations of polar and hydrophilic analytes with Thermo Scientific™ Syncronis™ HILIC LC Columns. Highly pure, high surface area silica and dense stationary phase coverage minimize secondary interactions and deliver reproducible high-resolution separations. The zwitterionic stationary phase results in a neutral, highly polar surface and provides alternative selectivity to C18 columns without ion-pairing or derivatization. The highly organic mobile phases used with Syncronis HILIC phases facilitate efficient desolvation in ESI-MS detection and improved sensitivity.Manufactured and rigorously tested in ISO 9000 facilities, these columns are designed to meet a range of analytical needs including fast method development, quantitative analysis and quality control.<h5>Highly Reproducible Separations</h5><ul><li>Rigorously tested stationary phase bonded to the highest quality silica ensures consistent, predictable LC performance</li></ul><h5>Excellent Peak Shapes for Enhanced Resolution and Sensitivity</h5><ul><li>Dense surface coverage of silica minimizes secondary interactions and peak tailing</li></ul><h5>Exceptional Column-to-Column Consistency</h5><ul><li>Manufactured, packed, and tested in ISO-9000-accredited facilities</li><li>Every column individually tested to meet stringent retention, efficiency, and peak symmetry specifications</li><li>Enhanced automated packing process</li></ul><h5>Alternative Selectivity</h5><ul><li>Zwitterionic bonded phase enhances retention of polar and hydrophilic analytes</li><li>No need for ion-pair or derivatization</li></ul><h5>Enhanced Sensitivity with MS Detection</h5><ul><li>Highly organic mobile phase facilitates desolvation in ESI-MS</li></ul><h5>Available in Three Particle Sizes</h5><ul><li>1.7μm for rapid ultrahigh-performance LC (UHPLC) separations</li><li>3μm and 5μm for more traditional HPLC analysis</li></ul><h4>Specifications</h4><ul><li>Column type: HILIC</li><li>Max. Pressure: 5800 psi (400 bar)</li><li>Packing Material: Spherical, Fully Porous, Ultrapure Silica</li><li>Stationary phase: Zwitterionic</li><li>Surface Area: 320 m2/g</li><li>Temperature: 60°C</li><li>Carbon load: 5%</li><li>Phase: HILIC</li><li>Pore Size: 100 Å</li><li>pH: 2 to 8</li></ul><h4>Syncronis HPLC and UHPLC Columns</h4><h5>Enter a new world of chromatography</h5>When developing a new method, one of the most important goals for the chromatographer is to achieve a consistent, reproducible separation. This makes selecting an HPLC column that offers highly-reproducible results essential to attaining this goal.<h5>Features of Syncronis columns</h5>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:<ul><li>Highly-pure, high-surface-area silica</li><li>Dense bonding and double endcapping</li><li>Stringent manufacturing and testing protocols</li></ul>

Products from category Analytical HPLC columns distributed by Thermo Fisher Scientific (EMEA) - page 2

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