ISC 2026 - Day 2

<h4><strong>What if you could compress 179 days of grueling laboratory workflow into just 14 hours?</strong></h4><p><strong>In this episode of ‪ChromatographyTalk‬, ‪Organomation‬ General Manager David Oliva sits down with analytical chemist Laura Penabad to discuss her groundbreaking new research in biocatalysis and high-throughput screening. Evolving engineered enzymes typically requires checking thousands of variants—a massive bottleneck when traditional Liquid Chromatography-Mass Spectrometry (LC-MS) runs take minutes per sample. Laura reveals how her team built a modular screening platform that shatters this limitation, running samples 128 times faster than standard methods without sacrificing analytical accuracy.</strong></p><p>Laura breaks down the "orchestra" of technologies making this possible, including coupling nanoliter droplet microfluidics with Cyclic Ion Mobility-Mass Spectrometry (cIM-MS) to separate complex chemical isomers in milliseconds. She also shares the chaotic but triumphant behind-the-scenes stories of her PhD journey—from presenting a "comically bad" early poster at ASMS to recruiting an undergraduate mechanical engineer to build custom automation software from scratch.</p><p>If you are an early-career researcher, a mass spec enthusiast, or curious about the future of synthetic biology and machine learning in chemistry, this episode is packed with invaluable intuition and advice.</p><h3><strong>Video Transcription</strong></h3><h4><strong>From Months to Hours: Droplet Ion Mobility–MS for Biocatalysis Screening</strong></h4><p><strong>High-throughput screening is central to directed enzyme evolution, but conventional analytical workflows can create a difficult compromise: extremely fast screens often provide limited structural information, while techniques such as LC-MS offer much richer chemical insight at the cost of throughput. In a recent interview, analytical chemist Laura described how her work with droplet-based cyclic ion mobility mass spectrometry is helping bridge that gap—providing rapid analysis while retaining the ability to distinguish structurally similar products.</strong></p><p>Her research grew from an initially modest proof of concept into a screening platform capable of analyzing a 96-well plate in roughly ten minutes. The resulting workflow was approximately <strong>128 times faster than a conventional three-minute LC-MS analysis</strong>, opening new possibilities for directed evolution campaigns in which thousands of enzyme variants need to be evaluated.</p><h4>Directed evolution needs better analytical screening</h4><p>Biocatalysis takes advantage of enzymes as highly selective catalysts capable of performing reactions under relatively mild conditions. Directed evolution extends those capabilities by deliberately modifying enzyme sequences, expressing large numbers of variants, screening their activity, and using the best-performing mutants as starting points for subsequent rounds of evolution.</p><p>The process can be repeated multiple times, progressively steering an enzyme toward improved activity, altered substrate specificity, or even chemistry that does not occur naturally.</p><p>But the effectiveness of directed evolution depends heavily on the screening step. The more variants that can be analyzed—and the more useful chemical information that can be collected for each one—the more effectively researchers can explore the enormous sequence space available to an enzyme.</p><p>For Laura, this created a clear analytical challenge: develop a screening platform that was substantially faster than conventional chromatographic analysis without sacrificing the structural discrimination needed for chemically similar products.</p><h4><strong>From an imperfect first experiment to a working platform</strong></h4><p>The project did not begin with a polished high-throughput workflow.</p><p>Laura recalled looking back at her <strong>2023 ASMS poster</strong>, where the early system was still working with standards rather than true isomeric samples. Droplet introduction was slow—around six seconds per droplet—and the signals were far from the ideal reproducible, square, flat-topped profiles expected from replicate droplets.</p><p>Nevertheless, simply producing a droplet signal represented an important first milestone.</p><p>The decisive change came when the project stopped being treated merely as a demonstration that droplet ion mobility–MS could work and instead became a deliberate effort to build a <strong>robust screening platform</strong>.</p><p>Laura approached the problem in modules. First came reliable droplet introduction. Then the ion mobility separation method. Quantification became another independent component. Matrix effects were introduced later, gradually making the system resemble the conditions expected with real screening samples.</p><p>Each layer was tested before another was added.</p><p>This stepwise strategy became one of the central principles of the project: rather than attempting to optimize the entire system simultaneously, individual components were developed, challenged, and then assembled into an increasingly realistic workflow.</p><h4><strong>Finding the middle ground between speed and structural information</strong></h4><p>One of the biggest analytical problems in high-throughput screening is distinguishing products with the same nominal or exact mass.</p><p>Constitutional isomers may contain the same atoms and therefore generate the same mass-to-charge ratio, while differing only in how functional groups are arranged within the molecular structure. Very rapid optical or mass-based screens may therefore struggle to distinguish them.</p><p>Traditional LC-MS can solve many of these problems through chromatographic separation, but a several-minute analysis rapidly becomes impractical when thousands of enzyme variants must be screened.</p><p>Ion mobility offered Laura’s team another option.</p><p>Rather than separating compounds on a chromatographic timescale, ion mobility can differentiate ions according to their gas-phase behavior on a much shorter timescale. In the workflow described in the interview, this created a useful compromise: not the kilohertz throughput possible with some simple screening technologies, but dramatically faster structural differentiation than conventional LC-MS.</p><p>The goal was therefore not simply to achieve the fastest possible screen, but to find a <strong>middle-throughput analytical regime with enough resolving power to answer chemically meaningful questions</strong>.</p><h4><strong>A 96-well plate in about ten minutes</strong></h4><p>That strategy eventually produced one of the most striking results of the project.</p><p>The droplet cyclic ion mobility–MS platform processed a <strong>96-well plate in roughly ten minutes</strong>, while maintaining quantitative results comparable with the conventional LC-MS workflow used for comparison. According to the interview, this represented an approximately <strong>128-fold increase in analysis speed relative to a three-minute LC-MS run</strong>.</p><p>Laura described the successful plate experiment less as a surprise than as confirmation that the modular development strategy had worked.</p><p>Before reaching that point, the workflow had already been challenged through a sequence of increasingly demanding experiments: droplet formation, ion mobility separation, calibration, matrix-containing calibration, and cross-testing analytes at different concentrations. By the time the complete plate was analyzed, each individual part of the analytical system had already been tested under progressively more realistic conditions.</p><h4><strong>What does that speed mean for directed evolution?</strong></h4><p>The impact becomes even clearer when the workflow is considered at the scale of an entire directed-evolution campaign.</p><p>Laura’s manuscript estimated that a <strong>five-round campaign involving 5,000 variants would require approximately 179 days using the conventional LC-MS workflow but only about 14 hours using the new platform</strong>.</p><p>Compressing months of analytical work into less than a day has consequences beyond laboratory productivity.</p><p>It allows researchers to screen more enzyme variants and therefore sample a larger portion of sequence space. But the resulting datasets may also become increasingly valuable for computational approaches.</p><p>Rather than retaining information only about the best-performing enzyme variant, researchers can preserve data describing variants that performed poorly as well as those that succeeded. When genotype and phenotype information remain linked through the well-plate workflow, these larger datasets can potentially provide richer input for machine-learning models designed to guide subsequent rounds of enzyme evolution.</p><p>Faster analysis therefore does more than accelerate an existing experiment—it can change the scale and design of the experiment itself.</p><h4><strong>Balancing ion mobility resolution and signal</strong></h4><p>Increasing cyclic ion mobility separation time can improve resolution, but it also introduces an important trade-off: additional passes can reduce signal.</p><p>Laura optimized this balance experimentally by continuously infusing mixtures containing both isomers and progressively adjusting the ion mobility conditions. After tuning parameters such as wave height and velocity, increasing the separation to <strong>three passes</strong> provided baseline resolution at the high analyte concentrations used during method development.</p><blockquote><p><strong>Concentration, however, also mattered.</strong></p></blockquote><p>At higher ion populations, space-charge effects could broaden peaks and reduce the baseline separation. This meant that the optimal number of passes could not be selected independently of the concentration range required by the final assay.</p><p>Her broader advice for optimization is therefore application-driven: decide first what the analytical method actually needs to accomplish.</p><p>More speed will almost always require sacrificing something—resolution, signal intensity, quantitative precision, or another performance parameter. The key is to identify which compromise the application can tolerate and then optimize the system around that requirement.</p><h4><strong>Solving droplet carryover with a practical compromise</strong></h4><p>Droplet-based workflows present their own engineering challenges, including carryover between neighboring samples.</p><p>In Laura’s system, analytes showed little tendency to partition into the fluorinated oil separating aqueous droplets within the Teflon tubing. The more troublesome carryover occurred closer to electrospray ionization, where a small amount of sample could remain associated with the interface and appear when the next droplet arrived.</p><p>Rather than adding excessive engineering complexity to an already elaborate platform, the researchers adopted a pragmatic solution: a <strong>sacrificial wash droplet</strong> between analytical samples.</p><p>It is an example of a recurring theme throughout the project. The objective was not to construct the theoretically most sophisticated droplet system, but to create a screening workflow that remained sufficiently robust, reproducible, and practical for large numbers of samples.</p><h4><strong>High-throughput analysis also requires high-throughput data processing</strong></h4><p>Accelerating the mass spectrometry experiment created another bottleneck: the data.</p><p>The instrument produced a continuous intensity-versus-time trace rather than a neatly organized well-plate dataset. With small experiments, Laura could manually identify individual droplets and process the results in spreadsheets. That approach quickly became unrealistic as sample numbers increased.</p><p>The solution emerged through collaboration with an undergraduate mentee, Aiden, who helped develop a dedicated software tool for processing the continuous traces.</p><p>Laura defined how the software should behave and how the analytical information should be organized, while Aiden developed the computational implementation. The workflow itself was subsequently adjusted to make automated data processing more reliable—for example, by introducing marker columns that allowed the software to recognize the end of each plate row.</p><p>The resulting tool can accept the acquired traces together with information about plate dimensions and replicates and automatically return parameters including <strong>peak identity, duration, and the corresponding well position</strong>. A later version also generated an automatically populated heat map.</p><p>The experience illustrates how improving analytical throughput often requires simultaneous development of instrumentation, experimental design, and informatics. Making the measurement faster is useful only if the resulting data can be processed at a comparable speed.</p><h4><strong>Mentoring became part of the scientific process</strong></h4><p>The software project also reflects another theme Laura emphasized throughout the interview: the value of mentoring.</p><p>Several younger researchers contributed directly to the development of the final platform. Laura described mentees not simply as additional hands in the laboratory but as scientists capable of proposing their own hypotheses and experimental ideas.</p><p>Working with undergraduate researchers also influenced the way she organized experiments.</p><p>Because their available laboratory time was limited, each task needed to have a clear purpose. That encouraged a more disciplined approach to experimental planning: instead of performing experiments simply because they could be done, the team had to ask which experiment would most efficiently answer the next important question.</p><p>In that sense, mentoring became another mechanism for improving the research itself.</p><h4><strong>The next step: continuous, automated screening</strong></h4><p>Despite the dramatic increase in analytical speed, the current workflow still includes manual operations such as loading tubing and connecting the sample stream to the mass spectrometer.</p><p>The next engineering challenge is therefore automation.</p><p>Laura described ongoing work using the <strong>Venturi effect</strong> to pull samples directly from wells into the droplet system. Building on previous work in the laboratory with 96-well plates, she has already tested this approach with as many as <strong>2,000 samples</strong>.</p><p>The long-term direction is clear: continuous and robust droplet generation, automated handling of thousands of samples, rapid ion mobility separation, mass spectrometric detection, and automated reconstruction of the resulting data into plate-based outputs.</p><p>Combining those elements could move the system closer to the type of large-scale screening required for increasingly ambitious biocatalysis campaigns.</p><h4><strong>Learning mass spectrometry one problem at a time</strong></h4><p>Laura also reflected on the broader experience of developing the platform during her PhD.</p><p>Ion mobility and mass spectrometry initially appeared intimidating, particularly because they combine concepts from analytical chemistry, physical chemistry, separations, instrumentation, and electrical engineering. What eventually changed was not simply learning more facts, but developing the ability to move repeatedly between theory and experiment.</p><p>An unexpected result sends the researcher back to the underlying theory. A better understanding suggests a modified experiment. That experiment creates another observation, gradually building intuition about how the system behaves.</p><p>Her advice to early-career scientists is therefore to accept that this process takes time.</p><p>Advanced analytical techniques may initially appear overwhelming, but understanding develops incrementally through repeated interaction between theory, experimentation, failure, and refinement. Equally important, she emphasized the role of the supportive ion mobility–mass spectrometry community in making a technically demanding field more approachable for young researchers.</p><p>From the first inconsistent droplets to a platform capable of processing thousands of samples, that iterative mindset ultimately shaped the entire project.</p><blockquote><p><strong>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</strong></p></blockquote><blockquote><h4><strong>Concentrating on Chromatography Podcast</strong></h4><p>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!</p><p>You can find <strong>Concentrating on Chromatography Podcast </strong>in podcast apps:</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL"><strong>Spotify</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185"><strong>Apple podcast</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography"><strong>podscan</strong></a></li></ul><p>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos"><strong>YouTube channel</strong></a></p></blockquote>

Droplet Cyclic Ion Mobility Mass Spec: Compressing Months of Enzyme Screening Into Just 14 Hours

ISC 2026 - Day 3

Article

Events

Video

Scientists

Interview

The International Symposium on Chromatography (ISC) represents the oldest conference series focussing on separation science. ISC symposia have been organised since 1956 in each even year. ISC is internationally recognised as one of the premier meeting series for discussion of all modes of chromatography and separation science with a broad coverage of techniques and applications.

International Symposium on Chromatography - (ISC)

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

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Thermo Scientific Syncronis Silica HPLC Columns

Optimize the reproducibility of normal phase chromatographic separations using Thermo Scientific™ Syncronis™ Silica LC Columns.

<p><strong>Optimize the reproducibility of normal phase chromatographic separations using Thermo Scientific™ Syncronis™ Silica LC Columns. Highly pure, base-deactivated, high surface area silica media ensure robust, high-resolution separations of nonpolar and moderately polar organic compounds by normal phase chromatography.</strong></p><p>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.</p><h5><strong>Excellent Reproducibility in Normal Phase Chromatography</strong></h5><ul><li>Highest quality silica ensure consistent, predictable LC performance</li><li>Exceptional Column-to-Column Consistency</li><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><strong>Available in Three Particle Sizes</strong></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><strong>Specifications</strong></h4><ul><li><strong>Column type:</strong> Normal Phase</li><li><strong>Max. Pressure:</strong> 5800 psi (400 bar)</li><li><strong>Packing Material:</strong> Spherical, Fully Porous, Ultrapure Silica</li><li><strong>Stationary phase:</strong> Silica</li><li><strong>USP Type:</strong> L3</li><li><strong>Surface Area:</strong> 320 m<sup>2</sup>/g</li><li><strong>Temperature:</strong> 60°C</li><li><strong>Phase:</strong> Normal Phase</li><li><strong>Pore Size: </strong>100 Å</li><li><strong>pH: </strong>2 to 8</li></ul><h4><strong>Syncronis HPLC and UHPLC Columns</strong></h4><h5><strong>Enter a new world of chromatography</strong></h5><p>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.</p><h5><strong>Features of Syncronis columns</strong></h5><p>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:</p><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 Amino HPLC Columns

Improve the consistency and reliability of your liquid chromatography (LC) separations with Thermo Scientific™ Syncronis™ Amino LC Columns.

<p><strong>Improve the consistency and reliability of your liquid chromatography (LC) separations with Thermo Scientific™ Syncronis™ Amino LC Columns. 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.</strong></p><p>High surface area silica, dense stationary phase coverage and double end-capping minimize secondary interactions and ensure reproducible high-resolution separations.</p><h5><strong>Highly Reproducible Separations</strong></h5><ul><li>Rigorously tested stationary phase bonded to the highest quality silica ensures consistent, predictable LC performance.</li></ul><h5><strong>Excellent Peak Shapes for Enhanced Resolution and Sensitivity</strong></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><strong>Exceptional Column-to-Column Consistency</strong></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><strong>Excellent Performance in Four Modes</strong></h5><ul><li>Aminopropyl phase performs well in reversed phase, normal phase, weak ion exchange and HILIC modes</li></ul><h5><strong>Available in Three Particle Sizes</strong></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><strong>Specifications</strong></h4><ul><li><strong>Column type:</strong> Mixed mode</li><li><strong>Endcapped: </strong>Yes</li><li><strong>Max. Pressure:</strong> 5800 psi (400 bar)</li><li><strong>Packing Material:</strong> Spherical, Fully Porous, Ultrapure Silica</li><li><strong>Stationary phase:</strong> Amino (NH2)</li><li><strong>USP Type:</strong> L8</li><li><strong>Surface Area:</strong> 320 m<sup>2</sup>/g</li><li><strong>Temperature:</strong> 60°C</li><li><strong>Carbon load:</strong> 4%</li><li><strong>Phase:</strong> Reversed Phase, Normal Phase, Ion Exchange, HILIC</li><li><strong>Pore Size: </strong>100 Å</li><li><strong>pH: </strong>2 to 8</li></ul><h4><strong>Syncronis HPLC and UHPLC Columns</strong></h4><h5><strong>Enter a new world of chromatography</strong></h5><p>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.</p><h5><strong>Features of Syncronis columns</strong></h5><p>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:</p><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 Phenyl  HPLC Columns

Achieve repeatable and consistent liquid chromatography (LC) separations of aromatic compounds using Thermo Scientific™ Syncronis™ Phenyl LC Columns. 

<p><strong>Achieve repeatable and consistent liquid chromatography (LC) separations of aromatic compounds using Thermo Scientific™ Syncronis™ Phenyl LC Columns. High surface area silica, dense stationary phase coverage, and double end-capping minimize secondary interactions and deliver reproducible high-resolution separations. The Phenyl-bonded aromatic phase offers alternative selectivity to C18 columns and is particularly useful for optimized retention of aromatic analytes.</strong></p><p>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.</p><h5><strong>Highly Reproducible Separations</strong></h5><ul><li>Rigorously tested stationary phase bonded to the highest quality silica ensures consistent, predictable LC performance.</li></ul><h5><strong>Excellent Peak Shapes for Enhanced Resolution and Sensitivity</strong></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><strong>Exceptional Column-to-Column Consistency</strong></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><strong>Alternative Selectivity</strong></h5><ul><li>Enhanced retention of aromatic compounds</li></ul><h5><strong>Available in Three Particle Sizes</strong></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><strong>Specifications</strong></h4><ul><li><strong>Column type:</strong> Reversed Phase</li><li><strong>Endcapped: </strong>Yes</li><li><strong>Max. Pressure:</strong> 5800 psi (400 bar)</li><li><strong>Packing Material:</strong> Spherical, Fully Porous, Ultrapure Silica</li><li><strong>Stationary phase:</strong> Phenyl</li><li><strong>USP Type:</strong> L11</li><li><strong>Surface Area:</strong> 320 m<sup>2</sup>/g</li><li><strong>Temperature:</strong> 60°C</li><li><strong>Carbon load:</strong> 11%</li><li><strong>Phase:</strong> Reversed Phase,</li><li><strong>Pore Size: </strong>100 Å</li><li><strong>pH: </strong>2 to 8</li></ul><h4><strong>Syncronis HPLC and UHPLC Columns</strong></h4><h5><strong>Enter a new world of chromatography</strong></h5><p>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.</p><h5><strong>Features of Syncronis columns</strong></h5><p>Thermo Scientific Syncronis LC columns achieve high levels of consistency and reproducibility through:</p><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 Dionex IonPac AS16 IC Columns

Measure trace perchlorate and other highly polarizable anions quickly and accurately in a variety of water matrices with the Thermo Scientific Dionex IonPac AS16 IC Columns.

<p><strong>Measure trace perchlorate and other highly polarizable anions quickly and accurately in a variety of water matrices with the Thermo Scientific™ Dionex™ IonPac™ AS16 IC Columns . This column simplifies the determination of polarizable anions, including thiosulfate, iodide, thiocyanate, and perchlorate using an isocratic hydroxide eluent. It is ideally suited for determination of trace perchlorate in drinking water in accordance with U.S. EPA Methods 314.0 and 314.1 (Primary Method).</strong></p><h5><strong>Designed for Simple, Sensitive Analysis</strong></h5><ul><li>Easily measure trace concentrations of perchlorate in drinking water, surface water, and ground water matrices using a large-loop injection</li><li>Separate hydrophobic anions (iodide, thiocyanate, and thiosulfate) in less than 20 min</li><li>Ideal for polyvalent anions, including polyphosphates and polycarboxylates</li><li>Ultralow hydrophobicity allows fast analysis of polarizable anions</li><li>Can be used in the second dimension of the 2D-IC method for the analysis of trace perchlorate (sub ppb) in drinking water</li></ul><h5><strong>Available in Multiple Formats</strong></h5><ul><li>Standard bore (4x250mm) and microbore (2x250mm) formats</li></ul><h4><strong>Specifications</strong></h4><ul><li><strong>Anion Exchange Capacity:</strong> 170 μeq</li><li><strong>Crosslinking: </strong>55% DVB</li><li><strong>Column Capacity:</strong> 170 μeq</li><li><strong>Column Chemistry:</strong> Hydroxide</li><li><strong>For Use With (Application):</strong> Anion Exchange</li><li><strong>Ion Exchange Group: </strong>Alkanol Quaternary Ammonium Ion</li><li><strong>Max. Pressure:</strong> 4000 psi (275 bar)</li><li><strong>Solvent Compatibility:</strong> pH 0 to 14, 0 to 100% HPLC Solvents</li><li><strong>Stationary phase:</strong> IonPac AS16</li><li><strong>Format:</strong> Standard Bore</li><li><strong>Packing Material: </strong>Ethylvinylbenzene/Divinylbenzene</li></ul>

Thermo Scientific Dionex IonPac AS17-C IC Columns

Quickly determine common inorganic anions in high-purity water matrices with the Thermo Scientific Dionex IonPac AS17-C column. 

<p><strong>Quickly determine common inorganic anions in high-purity water matrices with the Thermo Scientific™ Dionex IonPac AS17-C column. This low-capacity column is optimized for fast gradient separation of inorganic anions in simple sample matrices. It is also ideal for fast gradient separation of sulfur species, including sulfite, sulfate, and thiosulfate. The Dionex IonPac AS17C column is the recommended replacement for all Dionex IonPac AS17 column anion applications.</strong></p><h5><strong>Make Gradient Separations as Easy as Isocratic Runs</strong></h5><p>The Dionex IonPac AS17-C column is designed to be used in conjunction with the Dionex Eluent Generator. The Dionex Eluent Generator automatically produces potassium hydroxide eluents from water, making gradient separations as easy as isocratic runs. Using the Dionex Eluent Generator under gradient conditions, common inorganic anions can easily be separated in a variety of sample matrices including high purity water, drinking water, wastewater, process streams, and scrubber solutions.</p><h5><strong>Achieve Superior Chromatographic Performance</strong></h5><ul><li>Fast gradient separation of inorganic anions in high purity water matrices</li><li>Easy suppression of hydroxide eluent to a very low background with the Thermo Scientific™ Dionex™ Anion Self-Regenerating Suppressor (ASRS™ 300) for trace level determinations (including fluoride) even with a large loop injection</li><li>Superior retention and quantification of fluoride, acetate, propionate, and formate</li><li>Meets performance requirements specified in U.S. EPA Method 300.0 (A)</li><li>Operates at ambient or elevated temperatures</li><li>Column selectivity is optimized for operating temperature of 30°C to ensure reproducible results</li><li>Compatible with Reagent-Free™ Ion Chromatography (RFIC™) systems</li><li>Compatible with organic solvents to enhance analyte solubility, modify column selectivity, or for effective column clean-up</li></ul><p><strong>Note:</strong><i> The Thermo Scientific™ Dionex™ IonPac™ AS18 column is the recommended hydroxide-selective column for determination of common anions in diverse sample matrices.</i></p><h4><strong>Specifications</strong></h4><ul><li><strong>Anion Exchange Capacity:</strong> 30 μeq</li><li><strong>Crosslinking: </strong>55% DVB</li><li><strong>Column Capacity:</strong> 30 μeq</li><li><strong>Column Chemistry:</strong> Hydroxide</li><li><strong>For Use With (Application):</strong> Anion Exchange</li><li><strong>Ion Exchange Group: </strong>Alkanol Quaternary Ammonium Ion</li><li><strong>Max. Pressure:</strong> 4000 psi (275 bar)</li><li><strong>Solvent Compatibility:</strong> pH 0 to 14, 0 to 100% HPLC Solvents</li><li><strong>Stationary phase:</strong> IonPac AS17-C</li><li><strong>Format:</strong> Standard Bore</li><li><strong>Packing Material: </strong>Ethylvinylbenzene/Divinylbenzene</li></ul>

Products focused on Consumables - page 9

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