In today’s academic research environment, speed and precision are everything. Whether you're analyzing trace organic compounds, processing environmental extracts, or running a high-throughput metabolomics project, one bottleneck continues to slow down even the most well-equipped labs: solvent evaporation.If your lab still relies on aging hot plates or hand-drying methods, you’re not alone. But the consequences are real: inconsistent recovery, lost analytes, and valuable hours wasted each week.<h3>The Hidden Cost of Manual Evaporation</h3>Many academic labs were built on traditional sample prep methods. But as research needs evolve and sample volumes increase, these outdated tools can no longer keep up.Manual evaporation doesn’t just slow workflows—it undermines reproducibility.Hot plates can over-dry samples or introduce uneven heating that degrades sensitive compounds. Open evaporation risks contamination. And when multiple students share equipment, timing differences from sample to sample introduce variability that shows up later as noisy chromatography or inconsistent quantitation.Students and faculty alike often report frustration with drying steps taking far too long, especially when preparing dozens of samples for <a target="_blank" rel="noopener noreferrer" href="https://www.organomation.com/preparing-samples-for-lc-ms/ms-analysis?hsLang=en">LC-MS</a> or <a target="_blank" rel="noopener noreferrer" href="https://www.organomation.com/preparing-samples-for-gc-ms/ms-analysis?hsLang=en">GC-MS workflows</a>. In some cases, samples left unattended can be partially lost or require re-preparation entirely.For grant-funded research, that wasted time and material adds up quickly.<h3>A Better Way: Controlled Nitrogen Blowdown</h3>Nitrogen blowdown evaporation replaces guesswork with control. A steady stream of inert nitrogen combined with gentle, regulated heat speeds evaporation while protecting sensitive analytes.<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=362&amp;manufacturerItems=540">Systems from Organomation </a>are designed specifically for sample preparation—not as improvised solutions or general lab accessories, but as purpose-built tools for consistent concentration.The result is straightforward:<ul style="list-style-type:disc;"><li>Faster dry-downs</li><li>Better recoveries</li><li>Improved reproducibility</li><li>Less hands-on time</li></ul>So researchers can focus on generating data instead of babysitting samples.<h3>Why Academic Labs Choose the N-EVAP</h3>Research labs rarely process identical samples all day.One student may be concentrating a small organic extract, another working with aqueous environmental samples, and a third reducing a larger crude matrix—all at the same time. That variability is exactly where many batch systems fall short.The<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=362&amp;manufacturerItems=540&amp;search=n-evap"> N-EVAP</a> transforms sample preparation uncertainty into control through radical flexibility.Unlike systems that force you to work around equipment constraints, the N-EVAP’s individual per-sample valves let you adjust gas flow, temperature exposure, and needle positioning for each sample—simultaneously.This isn’t theoretical flexibility. It means you can:<ul><li>Concentrate a 10 mL aqueous sample</li><li>Reduce a 5 mL organic extract</li><li>Evaporate a 50 mL environmental sample</li></ul>—all in the same run, without compromise.<blockquote><a target="_blank" rel="noopener noreferrer" href="https://blog.organomation.com/blog/manual-to-automated-solvent-drying-is-it-worth-the-switch">Learn how the University of Cincinnati achieved 20x faster sample prep with the N-EVAP evaporator.</a></blockquote><ul><li>For academic programs handling variable matrices, this eliminates the false choice between batch efficiency and analytical precision. Each sample gets exactly the conditions it needs, preserving analyte integrity while maintaining throughput. &nbsp;</li><li>Available in configurations from <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2352">6</a> to <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1911">45 </a>positions—with optional digital controls on larger models—the system scales easily from small teaching labs to large research groups without forcing workflow changes. &nbsp;</li><li>It’s built for scientists who want control over their experiments, not workarounds. &nbsp;</li><li>Our evaporators are the <a target="_blank" rel="noopener noreferrer" href="https://blog.organomation.com/blog/why-organomation-is-the-most-cited-blowdown-evaporator-brand-in-u.s.-epa-methods">most cited nitrogen blowdown sample concentrators</a> in standardized EPA methods, making Organomation the trusted, fail proof choice.</li></ul><h3>Built for Chromatography Workflows</h3>Since 1959, Organomation has focused exclusively on sample preparation. That specialization shows in the details that matter most to chromatography labs: uniform heating, consistent gas distribution, compatibility with common vial formats, and rugged construction that stands up to daily use in shared academic spaces.Whether you're preparing samples for LC-MS, GC-MS, or other analytical methods, nitrogen blowdown helps ensure:<ul><li>Faster turnaround between experiments</li><li>Consistent recoveries</li><li>Fewer re-runs</li><li>Less student labor tied up in drying steps</li></ul>Which ultimately means more time spent on analysis, interpretation, and publication.<h3>Prove the Time Savings for Yourself</h3>Upgrading your evaporation workflow can clearly improve efficiency—but how much time would your lab actually save? ➔ Rather than guessing, you can calculate it.Organomation’s free <a target="_blank" rel="noopener noreferrer" href="https://explore.organomation.com/evaporation-time-calculator-excel-download">Evaporation Time Savings Calculator</a> lets you enter your real lab conditions—sample counts, volumes, current dry-down times, and run frequency—to quantify exactly how much time nitrogen blowdown could save each week, month, or semester.For many academic labs, the results are eye-opening:<ul><li>Hours of student and staff time reclaimed</li><li>Faster LC-MS/GC-MS queues</li><li>Reduced bottlenecks before analysis</li><li>Hard numbers that help justify equipment purchases in grants and budgets</li></ul>In just a few minutes, you’ll have concrete data showing whether flexible evaporation makes financial and workflow sense for your lab.<blockquote>👉 <a target="_blank" rel="noopener noreferrer" href="https://explore.organomation.com/evaporation-time-calculator-excel-download">Download the Evaporation Time Savings Calculator and see what your lab could save.</a></blockquote>

Is Your University Lab Losing Time and Data in Sample Prep? Here’s How to Fix It

<h4>The science behind gummy candies</h4>Who can resist colourful, fruity gummy candies 🍬 with their signature chewy and elastic texture? While they may appear simple, their formulation is actually quite sophisticated. Each gummy is produced using a precisely balanced combination of gelling agents, sugars, acids, flavourings, and colourants, all working together to deliver the desired taste and texture.For instance, the characteristic chewiness of gummy sweets results from the interaction between gelatin and sugars. Even minor adjustments—such as changing the type or concentration of the gelling agent—can significantly alter the final product. In addition, manufacturers must meet regulatory and labeling requirements, including certifications like Halal compliance. This makes accurate and consistent monitoring of ingredients essential throughout production.<h4>The importance of SEC fingerprinting</h4>Size Exclusion Chromatography (SEC), also known as Gel Permeation Chromatography (GPC), offers a fast and reliable way to analyze gummy formulations. By separating molecules according to their hydrodynamic size, SEC generates a unique molecular “fingerprint” for each product.This fingerprint enables manufacturers to:<ul><li>confirm the type and origin of gelling agents (e.g., for Halal verification)</li><li>ensure batch-to-batch consistency and detect production variations</li><li>monitor changes during storage to assess shelf life</li><li>evaluate low-molecular-weight compounds such as sugars in a semi-quantitative manner</li></ul>Overall, SEC fingerprinting supports consistent product quality and regulatory compliance, ensuring that every gummy maintains the same expected characteristics.<h4>Influence of column selection on SEC performance</h4>Column selection plays a crucial role in achieving high-quality separations and detailed molecular fingerprints. To illustrate this, porcine and bovine gelatin standards were analyzed using two different configurations:<ul><li>a single Multipore <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1655">SuperOH-P column</a></li><li>a coupled system of SuperOH-P 350 and SuperOH-P 150 columns</li></ul>Although both setups cover the same molecular weight range (100–1,000,000 Da), the coupled configuration effectively doubles the separation length. This results in improved resolution, which was confirmed experimentally. The coupled columns provided clearer separation between porcine and bovine gelatin, producing more distinct and informative fingerprints.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Knauer_Fig_1_Overlay_chromatograms_measured_with_DAD_at_230_nm_20_L_d81181cfb4.jpg" alt="KNAUER: Fig. 1 Overlay chromatograms measured with DAD at 230 nm, 20 µL. Dark blue: porcine reference standard; red: bovine reference standard; solid line: measured with column A; dotted line: measured with column set B. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Knauer_Fig_1_Overlay_chromatograms_measured_with_DAD_at_230_nm_20_L_d81181cfb4.jpg 245w," sizes="100vw" width="1024" height="611"><h4>Achieving reliable SEC fingerprints</h4>Reproducibility is key when using SEC for quality control. The process begins with consistent sample preparation—maintaining identical dissolution procedures, concentrations, and filtration steps is essential, as even small variations can influence peak shape and overall results.Beyond the column, the entire system setup is equally important. For example, combining a Refractive Index Detector (RID) with a Diode Array Detector (DAD) allows simultaneous detection of sugars, acids, and polymers within a single analysis.Accurate peak identification further enhances reliability. By analyzing reference standards based on known ingredient compositions, chromatographic peaks can be correctly assigned, enabling detailed interpretation of both high- and low-molecular-weight components.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Knauer_Fig_2_Zoom_overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_37caf5ac59.jpg" alt="KNAUER: Fig. 2 Zoom overlay chromatograms measured with RID, 20 µL and column set B. Black: Katjes® Yoghurt Gums; turquoise: apple pectin diluted 1:10; dark green: preserving sugar 1:1 (sugar; citric acid; pectin; fully hydrogenated sunflower oil); dark blue: maltodextrin; pink: sodium potassium tartrate; yellow: potassium citrate; red: citric acid; purple: lactic acid; beige: lactose; orange: sucrose; green: glucose; grey: blank. Graphic by KNAUER. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Knauer_Fig_2_Zoom_overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_37caf5ac59.jpg 245w," sizes="100vw" width="1024" height="611">Additionally, incorporating a flow marker helps correct for system-related variations, such as fluctuations in flow rate, thereby improving retention time stability and peak assignment accuracy. More details on the flow marker and its use in SEC are described in <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/VTN_0043_knauer_gpc_sec_data_reproducibility_with_flow_marker_96ee6b3cd9.pdf">this technical note</a>.<h4>Verification of gelatin origin using SEC</h4>Determining the source of gelatin is critical for proper labeling and compliance, particularly for Halal-certified products where porcine gelatin is not permitted.To demonstrate SEC’s capability, two gummy samples with identical formulations but different gelatin sources were analyzed. One sample contained porcine gelatin, while the other used bovine gelatin. The resulting SEC fingerprints showed clear differences in the gelatin region, allowing unambiguous identification. The standard Haribo® Goldbears corresponded to the porcine reference, whereas the Halal version matched the bovine standard.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Knauer_Fig_3_Overlay_chromatograms_measured_with_DAD_at_230_nm_20_L_and_column_set_B_12e99a43e7.jpg" alt="KNAUER: Fig. 3 Overlay chromatograms measured with DAD at 230 nm, 20 µL and column set B. Solid dark blue line: Haribo® Goldbears; solid red line: Halal Haribo® Goldbears; dotted dark blue line: porcine reference standard; dotted red line: bovine reference standard. Graphic by KNAUER. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Knauer_Fig_3_Overlay_chromatograms_measured_with_DAD_at_230_nm_20_L_and_column_set_B_12e99a43e7.jpg 245w," sizes="100vw" width="1024" height="611"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Fig_4_Overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_2_c29ea59bc4.jpg" alt="KNAUER: Fig. 4 Overlay chromatograms measured with RID, 20 µL and column set B. Solid dark blue line: Haribo® Goldbears; solid red line: Halal Haribo® Goldbears; dotted dark blue line: porcine reference standard; dotted red line: bovine reference standard. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Fig_4_Overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_2_c29ea59bc4.jpg 245w," sizes="100vw" width="1368" height="432">This confirms that SEC is a reliable method for distinguishing gelatin origin.<h4>Role of low-molecular-weight components</h4>In addition to polymers such as gelatin, SEC can also reveal smaller molecules, including sugars and organic acids. While SEC is not a replacement for fully validated HPLC methods, it serves as a rapid screening tool for comparing samples and supporting quality control.Using RID detection, differences in sugar composition become visible. For example, chromatograms showed a significantly higher sucrose signal in preserving sugar compared to gummy candies, reflecting formulation differences.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Knauer_Fig_5_Zoom_overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_06c072e069.jpg" alt="KNAUER: Fig. 5 Zoom overlay chromatograms measured with RID, 20 µL and column set B. Black: sucrose 1mg/ml; blue: Haribo® Goldbears; green: preserving sugar 1:1 (sugar; citric acid; pectin; fully hydrogenated sunflower oil). Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Knauer_Fig_5_Zoom_overlay_chromatograms_measured_with_RID_20_L_and_column_set_B_06c072e069.jpg 245w," sizes="100vw" width="1024" height="611"><h4>Conclusion</h4>SEC is a powerful analytical technique for monitoring product quality and ensuring process consistency in gummy candy production. By generating detailed molecular fingerprints, it enables manufacturers to verify ingredients, maintain consistency, and comply with regulatory requirements.Importantly, this approach is not limited to gummy candies—it can be adapted to a wide range of products where molecular characterization is essential.<blockquote><ul><li>If you're planning to set up or optimize your GPC/SEC workflow, feel free to contact us at sales@knauer.net. Stay tuned for more exciting insights into the GPC/SEC world in our “GPC/SEC Made Easy” series.</li><li>For more information on the technical details, you can refer to <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/VFD_0195_sec_for_fingerprint_analysis_of_gummy_candies_ce5349cd95.pdf">this application note.</a></li><li>For further information on this topic, please contact our author: wesolowski@knauer.net</li></ul></blockquote>

GPC/SEC Made Easy – Fingerprint analysis of Gummy Candies

News from LabRulezLCMS Library - Week 17, 2026

Article

Product

Application

Food

Science and research

Laboratories

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

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

Separation Science

Agilent Technologies

Shimadzu Corporation

Vitamin B and D are important micronutrients to maintain good health. They are often fortified in various foods such as infant and adult formulae for added health benefits. Over the years, there are many AOAC methods dedicated to the analyses of different vitamin B and vitamin D compounds in infant and adult formulae. In recent years, many AOAC methods use LC-MS/MS to analyse both these vitamins. In this webinar, I will discuss about the different AOAC methods and the sample preparations in the analysis of vitamin B and D. I will also share some of the application development works done closely following AOAC methods using Shimadzu LC-MS/MS.
<h3>Learning Objectives</h3>
<ul>
<li>Review of AOAC analysis methods for Vitamin B and D, and explore the use of LC-MS/MS in AOAC methods</li>
<li>Understand the development of AOAC methods in Shimadzu lab</li>
</ul>
<blockquote>
Presenter: Chew Yin Ling (LC/LCMS Application chemist, Shimadzu (Asia Pacific) Pte Ltd)
</blockquote>
<blockquote>
Yin Ling graduated from National University of Singapore (NUS) with a bachelor’s degree in Applied Chemistry. Currently, she is an LC/LCMS application chemist in the Centre for Application Solutions in Shimadzu Asia Pacific. She has 6 years of experience in method development for various LC and LCMS applications. She also focuses on different sample preparation techniques such as solid-phase extraction and QuEChERS for different matrices, especially food matrices.
</blockquote>

LC-MS/MS methods for vitamin B and D analyses as per AOAC methods in infant and adult formulae

Like many things, chromatography skills are built over time by reading, learning from colleagues, personal experiences, etc.
In this seminar, we’ll share with you some of the things we in tech support often send customers to help them build their chromatography knowledge.
Topics covered will include;
<ul>
<li>What to consider when scaling up or down in column size
</li>
<li>What to do when your column gets dirty
</li>
<li>Mobile phase considerations, including how you make it
</li>
<li>The role your instrument can play
</li>
</ul>
Whether you’re a seasoned chromatographer or new to LC, there’s always something to learn.
<blockquote>
Presenter: Rita Steed (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Rita Steed began supporting the LC column line for Agilent in 1999. As a Chromatography Specialist (first with Chromatography, Inc., then directly for Agilent), Rita worked on-site with researchers in Pharmaceutical and other industries presenting technical seminars and assisting researchers with troubleshooting and method development. Rita has over 20 years of Chromatography experience in the Biotechnology, Chemical, and Pharmaceutical industries. She has held positions in Research, Sales, and Technical Service. Rita has earned degrees in Microbiology and Life Sciences/Biochemistry. In her current position, she is an inside Application Engineer supporting LC columns.
</blockquote>

Agilent Technologies: Things You May Not Know or May Have Forgotten

Things You May Not Know or May Have Forgotten

Build your HPLC chromatography knowledge.

Common problems like pressure, peak shape changes, retention time shifts, and changes in detection are ones HPLC chromatographers routinely struggle with.
In this webinar we will work through troubleshooting strategies to help you with them. When a problem arises, it is important to determine if it’s more likely related to the instrument or something with the column. The answer could be either one of them, but it might also be something else like the sample or mobile phase. Looking at both the instrument and the column, we will walk through steps used to help track down the potential cause and recommend a course of action to help resolve the problem.
<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>

Agilent Technologies: From Instrument to Column: Tracking Down the Problem

From Instrument to Column: Troubleshooting in HPLC

Helping you with troubleshooting strategies in HPLC.

In most HPLC separations there is a wanted interaction of the sample with a chromatography packing.
When doing GPC/SEC separations, that is not the case. GPC/SEC is a noninteractive technique that separates samples based on their size in solution and not on their chemistry. This presentation will cover the common questions that should be asked when developing a robust and reproducible GPC/SEC method.
Topics will include:
<ul>
<li>Sample type: protein vs polymer
</li>
<li>Solvent Selection and its importance
</li>
<li>Column Choices &amp; how to choose correctly
</li>
<li>Calibrants
</li>
<li>Detector &amp; Instrument Considerations
</li>
</ul>
As we discuss each topic area we’ll look at examples and provide valuable tips that can help you achieve long term reproducible and reliable results.
<blockquote>
Presenter: Jean Lane (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Jean has been employed with Agilent since Nov 2010 in technical and applications support and has a primary role supporting Agilent’s full line of LC columns and consumables, which also includes support for Agilent’s GPC/SEC product line. She came to Agilent thru acquisition of Varian and the former Polymer Laboratories. Jean has 20 plus years of technical and applications support for both HPLC and GPC consumable products. In addition to practical chromatography experience in the laboratory, she has had many, many years in her technical role involving customer support providing assistance and troubleshooting for customer chromatography issues.
</blockquote>

Agilent Technologies: From Proteins to Polymers – GPC-SEC: Understanding Column Selection and Method Considerations for Your Sample

From Proteins to Polymers – GPC-SEC: Understanding Column Selection and Method Considerations for Your Sample

Common questions that should be asked when developing a robust and reproducible GPC/SEC method.

Understanding Column Selection and Method Considerations

When developing HPLC methods, isocratic and gradient methods offer different advantages. Knowing how to choose between the two types of methods is important for efficient method development.
In this talk we will look at how a scouting gradient can help determine whether an isocratic or gradient method is the best choice. The strengths of each will be discussed. They can help determine which to choose when conditions reasonably allow for a choice.
Lastly, we will briefly discuss how a scouting gradient can be used to optimize the conditions of an analytical gradient.
<blockquote>
Presenter: Paul Altiero (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Paul Altiero is an Applications Engineer located at the Agilent Little Falls site in Wilmington, DE. Prior to coming to Agilent in 2009, Paul worked in the pharmaceutical industry performing LCMS bioanalysis supporting Drug Discovery DMPK. While at Agilent, Paul has been a field service engineer for LCMS as well as the integrating program manager for the RapidFire high throughput LCMS system. In his current role Paul’s responsibilities include technical support and application assistance for LCMS consumables.
</blockquote>

Agilent Technologies: Isocratic vs. Gradient: Making the Call

Isocratic vs. Gradient: Making the Call

How a scouting gradient can help determine whether an isocratic or gradient method is the best choice.

HPLC Isocratic vs. Gradient: Making the Call

If you want to treat yourself to good chromatography understanding your method goals or priorities is a key part but there are other things to consider as well.
Things like:
<ul>
<li>Column choice and characteristics
</li>
<li>Method parameters like temperature
</li>
<li>Mobile phase choice
</li>
<li>Your sample and its characteristics
</li>
<li>Potential limitations of your instrument
</li>
</ul>
We’ll discuss tricks to help identify what you should look at more closely and tips to help optimize your results.
<blockquote>
Presenter: Rita Steed (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Rita Steed began supporting the LC column line for Agilent in 1999. As a Chromatography Specialist (first with Chromatography, Inc., then directly for Agilent), Rita worked on-site with researchers in Pharmaceutical and other industries presenting technical seminars and assisting researchers with troubleshooting and method development. Rita has over 20 years of Chromatography experience in the Biotechnology, Chemical, and Pharmaceutical industries. She has held positions in Research, Sales, and Technical Service. Rita has earned degrees in Microbiology and Life Sciences/Biochemistry. In her current position, she is an inside Application Engineer supporting LC columns.
</blockquote>

Agilent Technologies: Treat Yourself to Good Chromatography: Helpful Tricks

Treat Yourself to Good Chromatography: Helpful Tricks

Tricks to help identify what you should look at more closely and tips to help optimize your results.

Troubleshooting an HPLC system can be a daunting task. In this seminar we will:
<ul>
<li>Look at how to isolate the problem
</li>
<li>Discuss the most common column problems and their solutions including:
<ul>
<li>Pressure
</li>
<li>Peak Shape
</li>
<li>Retention
</li>
</ul>
</li>
</ul>
We will also look at examples where you may think it’s your column but it’s actually related to your instrument such as:
<ul>
<li>Dwell volume</li>
<li>Extra Column Volume</li>
<li>Detector Response Rate</li>
</ul>
<blockquote>
Presenter: Rita Steed (Application Engineer, Agilent Technologies, Inc.)
</blockquote>
<blockquote>
Rita Steed began supporting the LC column line for Agilent in 1999. As a Chromatography Specialist (first with Chromatography, Inc., then directly for Agilent), Rita worked on-site with researchers in Pharmaceutical and other industries presenting technical seminars and assisting researchers with troubleshooting and method development. Rita has over 20 years of Chromatography experience in the Biotechnology, Chemical, and Pharmaceutical industries. She has held positions in Research, Sales, and Technical Service. Rita has earned degrees in Microbiology and Life Sciences/Biochemistry. In her current position, she is an inside Application Engineer supporting LC columns.
</blockquote>

Agilent Technologies: LC Column Troubleshooting – Isolating the Source of the Problem

LC Column Troubleshooting – Isolating the Source of the Problem

Isolating the Source of the Problem

The widespread use of pesticides and the societal pressure to manufacture the purest, safest natural products mandates development of methods for precise determination of pesticide residues in botanical ingredients. Pesticide residue analysis of plant based dry ingredients used in dietary supplements is among the most difficult to perform due to complexity of the matrices.
Furthermore, implementation of a multi-residue pesticide screening program in a quality control environment can be quite difficult and time consuming. Therefore, many companies turn to specialized contract laboratories to perform such comprehensive testing. Although third party testing is commonly utilized, the in-house pesticide residue screen provides an additional layer of quality control and further ensures the safety of manufactured products.
Optimization of the critical parts of the process such as sample preparation procedure, analysis of the samples and data processing and reporting guarantees a robust and a productive workflow. At NOW Foods, two analytical platforms, GC-MS/MS and LC-MS/MS were utilized in the development of a high throughput workflow to screen a total of 500 pesticide residues in botanical matrices. Sample preparation was optimized for groups of botanical matrices and targeted towards matrix mitigation. The robustness of both platforms was evaluated over time when analyzing matrix heavy samples.
The GC-MS/MS analysis was performed on a TSQ9000 and the compound separation was optimized on a TG-5SILMS column. The LC-MS/MS analysis was performed on a TSQ Altis paired with a Vanquish LC. The chromatographic separation of the 254 compounds was achieved in 20 min. Data processing and reporting was streamlined by utilizing the Chromeleon software across both platforms.
The optimized workflow allows for a high throughput analysis of samples in a regulated quality control environment.
<h5>By attending this webinar you will learn about:</h5>
<ul>
<li>optimization of LC-MS and GC-MS workflows for pesticide analysis in food</li>
<li>techniques for extracting difficult food matrices</li>
<li>the use of Chromeleon software to streamline sample reporting</li>
</ul>
<blockquote>
Presenter: Katie Banaszewski (NOW Foods)
</blockquote>
<blockquote>
Katie Banaszewski is a Method Development Supervisor at NOW Foods, where she leads the development and validation of analytical methods. Prior to joining NOW Foods she worked at the Institute for Food Safety and Health and Mars Snackfood US. Katie specializes in mass spectrometry applications and residue analysis, and leads the development and implementation of a routine pesticide residue monitoring program at NOW Foods.
</blockquote>

Pixabay/Bruno Glätsch: Solving the Challenges and Workflow Dilemma of High-throughput Multi-residue Pesticide Screening Program in a Quality Control Environment

Solving the Challenges and Workflow Dilemma of High-throughput Multi-residue Pesticide Screening Program in a Quality Control Environment

This webinar is on Comprehensive Pesticides Analysis in Cannabis Testing Industry.
This series is ideal for anyone currently working on medicinal cannabis or cannabinoid-based products, looking to expand further as well as those new to this area of research who are eager to learn more.
<h3>Other sessions will aim to cover topics such as:</h3>
<ul>
<li>Cannabis Potency Testing</li>
<li>Terpene Profiling &amp; Residual Solvent Analysis</li>
<li>Heavy Metals</li>
<li>Purification strategies</li>
</ul>

Shimadzu: Shimadzu Cannabis Analysis Series - Comprehensive Pesticides Analysis

Shimadzu Cannabis Analysis Series - Comprehensive Pesticides Analysis

This series is ideal for anyone currently working on medicinal cannabis or other cannabis products, looking to expand further as well as those new to this area of research who are eager to learn more.
<h3>Other sessions cover topics such as:</h3>
<ul>
<li>Pesticides analysis</li>
<li>Heavy Metals Analysis</li>
<li>Cannabis Potency Testing</li>
<li>Terpenes and Residual Solvents</li>
</ul>

Pixabay/TinaKru :Shimadzu Cannabis Analysis Series - Sample Prep/Purification Strategies