Metabolomics researchers are often forced to choose between two powerful but different approaches. <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/content/lifetech/global/en/home/industrial/mass-spectrometry/metabolomics-lipidomics/metabolomics/untargeted-metabolomics.html">Untargeted metabolomics</a> is great for discovery: it surveys as many metabolites as possible to reveal biology you didn’t know to look for. <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/content/lifetech/global/en/home/industrial/mass-spectrometry/metabolomics-lipidomics/metabolomics/targeted-metabolomics.html">Targeted metabolomics</a> is built for precision: it measures a defined list of metabolites with high sensitivity and quantitative confidence. The challenge is that running both typically costs time, sample, and can introduce variability between workflows.In order to deal with this the researchers at Thermo Fisher Scientific have developed <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/content/lifetech/global/en/home/industrial/mass-spectrometry/metabolomics-lipidomics/simultaneous-quantitation-discovery-squad.html">Simultaneous Quantitation and Discovery (SQUAD)</a> analysis as shown in this technical note <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/tn_004327_ov_squad_metabolomics_orbitrap_astral_tn004327_na_en_290c75edd9.pdf">Simultaneous Quantitation and Discovery Analysis: Combining Targeted and Untargeted Metabolomics on Orbitrap Mass Spectrometers</a>, a hybrid strategy that combines targeted quantitation and untargeted discovery in a single experiment. In practice, SQUAD lets you quantify a predefined metabolite panel using calibration curves built from authentic standards and isotopically labeled internal standards, while still capturing rich full-scan data that supports retrospective mining and identification of unknowns.A key theme of the technical note is that results are only as strong as the experiment design and quality controls. The workflow emphasizes calibration strategy, careful extraction choices (aligned to metabolite classes), and the smart use of blanks, pooled QCs, and system suitability tests to monitor drift, contamination, and reproducibility across a batch.SQUAD is also designed to scale across different Thermo Scientific Orbitrap mass spectrometers. The technical note outlines how the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1491">Thermo Scientific Orbitrap Exploris mass spectrometers</a> can use MS1-based SQUAD with polarity switching and optionally add tSIM/tMS2 for targeted sensitivity, while the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=5&amp;manufacturerItems=3&amp;search=Tribrid">Thermo Scientific Orbitrap Tribrid mass spectrometers</a> can pair high-resolution MS1 discovery with rapid ion-trap tMS2 quantitation, boosted by tools like <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1763">Thermo Scientific AcquireX Intelligent Data Acquisition</a> and Real-Time Library Search (RTLS).Finally, the data story comes together in software: <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/77">Thermo Scientific TraceFinder Software</a> for targeted quantitation and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1759">Thermo Scientific Compound Discoverer Software </a>for untargeted discovery, annotation, and statistics, turning one injection into both confident numbers and new biological leads.<blockquote><div><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/tn_004327_ov_squad_metabolomics_orbitrap_astral_tn004327_na_en_290c75edd9.pdf">Download the SQUAD technical note</a></div></blockquote>Visit us on&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/showcase/72003132/admin/dashboard/">LinkedIn:</a>&nbsp;#SQUAD #Metabolomics #Lipidomics

One Injection, Two Answers: Introducing Squad Metabolomics on Orbitrap Mass Spectrometers

<h3><a target="_blank" rel="noopener noreferrer" href="https://www.isc2026.org/">ISC 2026</a></h3>The <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/companies/314">International Symposium on Chromatography (ISC)</a> represents the oldest conference series on separation science. ISC symposia have been organised since 1956 in each even year. ISC is one of the premier meetings series for discussion of all modes of chromatography and separation science with a broad coverage of techniques and applications.<h4><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/events/644">35th International Symposium on Chromatography</a></h4>📆6. - 10. September 2026📍Prague, Czech Republic<h3>Registration</h3><blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://www.czech-in.org/cmPortalV15/Account/Login?ReturnUrl=%2FcmPortalV15%2FPortal%2FISC26%2Fnormal">Register HERE for the ISC 2026</a>Late Registration until 25 August 2026!From 26 August 2026 only Onsite Registration.</blockquote><h4>Publishing Workshop</h4><ul><li>Wednesday, 9 September 2026&nbsp;</li><li>12:30–14:00&nbsp;</li></ul>This interactive workshop will provide practical guidance on scientific publishing in the field of separation science. Participants will have the opportunity to hear directly from journal editors about key aspects of the publication process and how to improve their chances of successful publication.Topics will include manuscript preparation, peer review, editorial decision-making, open access publishing, and the responsible use of artificial intelligence in scientific publishing. Editors will share insights into what they look for in submissions, common reasons for rejection, and strategies for preparing strong manuscripts. The workshop will also cover selected Wiley-specific topics, including the publisher’s submission platform and current guidelines on the use of AI in scientific publications.The session will include opportunities for questions and discussion, allowing participants to interact directly with editors and gain valuable advice for their future publishing activities.<h5>Attending Editors-in-Chief:</h5><ul><li>Michael Lämmerhofer — Journal of Separation Science and Separation Science Plus&nbsp;</li><li>Sebastiaan Eeltink — Analytical Science Advances&nbsp;</li><li>Mario Thevis — Drug Testing &amp; Analysis&nbsp;</li></ul>

Publishing Workshop at ISC 2026

We are excited to announce that the 18th MDCW will take place from January 25-27, 2027, in Liège, Belgium. This in-person event will feature:<ul><li>Keynote presentations from leading researchers</li><li>Flash talks and poster sessions highlighting the latest innovations</li><li>Focus group discussions addressing current challenges and future developments</li><li>💸FREE registration ensures that this event remains accessible to all researchers, students, and industry professionals interested in multidimensional chromatography. ​​We hope to see you there!</li></ul><h3>Registration</h3><blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://app.oxfordabstracts.com/auth?redirect=https%3A%2F%2Fapp.oxfordabstracts.com%2Fregister%2Fevent%2F77272%3Fpreview%3Dfalse">Register HERE</a>Registration deadline: December 1, 2026</blockquote><h3>Abstract Submission</h3>Abstracts for oral presentations must be submitted by September 15, 2026, to be considered.​Poster abstracts submitted by September 15, 2026, will be included in the preliminary program. Additional last-minute poster submissions will be accepted until November 30, 2026, for inclusion in the final program.<blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://app.oxfordabstracts.com/auth?redirect=/stages/81780/submitter">Submit your abstract HERE</a>&nbsp;Deadline for abstract submission: September 15, 2026</blockquote><h4>Presentation guidelines</h4><h5>Poster Presentations</h5><ul><li>Presenters must print and bring their own posters—onsite printing services and mailed submissions are not available.</li><li>Posters should be in landscape format: 36" tall × 48" wide.</li><li>Set up your poster during registration on the day of your assigned session and remove it at the end of the same day.</li><li>Poster presenters must be present at their posters during the designated poster session.</li><li>Posters will also be available for viewing during coffee and lunch breaks.</li><li>Presenters may optionally stand by their posters during these times for further discussions.</li></ul><h5>Oral Presentations</h5><ul><li>Keynote presentations: 30 minutes (25–28 min + Q&amp;A)</li><li>Full oral presentations: 20 minutes (18 min + 2 min Q&amp;A)</li><li>Flash presentations: 10 minutes (8 min + 2 min Q&amp;A)</li></ul>Presentation Format:<ul><li>Submit your slides as a PowerPoint (PPT) file (.ppt or .pptx).</li><li>Name your file with program code and surname, e.g. "O-28 Smith.pptx".</li><li>For optimal display, use 16:9 slide format (4:3 is also supported).</li></ul>Technical &amp; Session Logistics:<ul><li>A headset or portable microphone will be available.</li><li>A laser pointer with a slide change button will be provided.</li><li>Ensure your presentation allows time for questions within your allocated time.</li><li>Before your session, check in and introduce yourself to the conference or session chairs.</li></ul><h3>Program</h3><h4>Keynote Speakers</h4><h5>Finding Clarity in Challenging Samples: Multiple Heart-Cutting 2D-LC and the Technologies That Enable It &nbsp; &nbsp;</h5><ul><li>Stephan Buckenmaier (Principal Scientist R&amp;D, Agilent Technologies)</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/MDCW_Stephan_Buckenmaier_c84239ec30.jpg" alt="MDCW: Stephan Buckenmaier" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_MDCW_Stephan_Buckenmaier_c84239ec30.jpg 151w," sizes="100vw" width="284" height="294">Stephan Buckenmaier is a Principal Scientist in R&amp;D at Agilent Technologies, specializing in advanced separation science and the development of two-dimensional liquid chromatography (2D-LC) solutions. Since joining Agilent in 2006, he has held a variety of scientific and technical roles, with a particular focus on innovative chromatographic technologies. He earned his Ph.D. from the University of the West of England (Bristol, UK) and conducted postdoctoral research at the University of Tübingen. Stephan has authored numerous scientific publications, contributed a book chapter, and is listed as an inventor on numerous patents in the field of separation science. He regularly presents his work at international scientific conferences.<h4>Short Course</h4><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/18th_MDCW_short_course_41ecd3c6cf.jpg" alt="18th MDCW: Short course" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_18th_MDCW_short_course_41ecd3c6cf.jpg 245w," sizes="100vw" width="1100" height="619">There will be 20 spaces available in a short course related to multidimensional chromatography. If you want to register for the short course, indicate so during your registration. We will send a separate link to pay for the short course to reserve your seat ($50 USD).&nbsp;<h4>A Beginner’s Guide to Multidimensional Chromatography short course</h4><ul><li>Instructors: Pierre-Hugues Stefanuto, Katelynn Perrault Uptmor, Dwight Stoll, Petr Vozka</li></ul><h5>Course Description&nbsp;</h5>So...you want to do multidimensional chromatography? If you are getting started in the field using either liquid or gas chromatography, you’re in the right place. This course will cover a brief history and introduction to both multidimensional gas chromatography and multidimensional liquid chromatography. Discussion will also include basic system components and data handling strategies to apply after acquiring your data. A hands-on portion of the course will also include familiarization with common system components and consumables for both GC and LC, as well as the opportunity to use a commercial GC×GC instrument.<h5>Target Participants&nbsp;</h5>This course is intended to be an initial touchpoint for those who are looking to explore multidimensional chromatography as a new option/capability, or who might be using it for the first time. The course is intended for new users to obtain a background on the techniques as a primer to the workshop. &nbsp;Advanced topics will not be discussed.<h5>Course Logistics&nbsp;</h5><ul><li>Morning Session (8:30 AM – 12:00 PM)</li><li>Afternoon Session (1:00 PM – 4:30 PM)</li></ul>Lunch and coffee will be provided.<h5>Cost&nbsp;</h5>A $50 fee is required to reserve a spot in the course. 20 seats are available. An expression of interest form will be available to indicate interest in a seat within the course. On November 10th, participants will be informed about seat availability and the payment process will be communicated.<h4>Outline (Total Time ~ 4 hrs)&nbsp;</h4><h5>Part I (1 hr) – History, Terminology, Fundamental Concepts&nbsp;</h5><ul><li>Brief history of the development of multidimensional separations&nbsp;</li><li>Terminology&nbsp;</li><li>Fundamental Concepts&nbsp;<ul><li>In what ways are multidimensional separations useful for analytical chemistry / measurement science?&nbsp;</li><li>First and second separations should be orthogonal / complementary&nbsp;</li><li>Fast second dimension separations are important to avoid undersampling&nbsp;</li><li>Structured chromatograms can provide chemical insight and facilitate data interpretation&nbsp;</li><li>Highlights of an example data processing workflow – from raw data to actionable information &nbsp;</li></ul></li><li>Break (30 min)&nbsp;</li></ul><h5>Part II (1.5 hrs) Introduction to Multidimensional Gas Chromatography&nbsp;</h5><ul><li>Method basics&nbsp;<ul><li>Column selection&nbsp;</li><li>Method parameters&nbsp;</li><li>Carrier gas choices&nbsp;</li><li>Detector considerations&nbsp;</li></ul></li><li>Modulator selection with a focus on current market options&nbsp;<ul><li>Thermal modulators&nbsp;</li><li>Flow modulators&nbsp;</li><li>Other commercial options&nbsp;</li></ul></li><li>Method development made simple&nbsp;</li><li>Data preprocessing and initial handling&nbsp;</li><li>Lunch (1 hr)&nbsp;</li></ul><h5>Part III (1 hr) Introduction to Multidimensional Liquid Chromatography&nbsp;</h5><ul><li>Modes of multidimensional separation commonly used with LC&nbsp;<ul><li>Heartcut&nbsp;</li><li>Multiple heartcut / selective comprehensive&nbsp;</li><li>Fully comprehensive&nbsp;</li></ul></li><li>Interfaces used for multidimensional LC (i.e., the hardware that does the transfer from first to second dimension)&nbsp;</li><li>Common use cases of multidimensional LC illustrated using examples from industry and academic research&nbsp;<ul><li>Evaluating peak purity&nbsp;</li><li>Unknown identification via multidimensional and MS or NMR detection&nbsp;</li><li>Multi-stage separation with analyte transformation between stages&nbsp;</li><li>Multi-attribute methods&nbsp;</li><li>Making complete analysis of moderately complex samples attainable in a reasonable analysis time&nbsp;</li><li>Digging deeper – comprehensive separations for comprehensive analysis&nbsp; Introduction to method development strategies&nbsp;</li></ul></li></ul><h5>Part IV (2 hrs) Laboratory Instrument Familiarization</h5><h5>Part V (30 min) Wrap-up and Q&amp;A &nbsp;</h5><h4>Venue</h4><ul><li>University of Liege</li><li>Pl. du Vingt Août 7</li><li>4000 Liège</li><li>​Belgium</li><li>​Main Room: Salle Academique</li></ul>

18th MDCW - Registration and abstract submission opens

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The Multidimensional Chromatography (MDC) Workshop draws experts in this exciting field to share and discuss their research.

The Multidimensional Chromatography Workshop

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Thermo Fisher Scientific

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)

Thermo Scientific SureSTART Vials and Well Plates Collection

Start your analysis with confidence using SureSTART vials, caps, well plates, and kits—offering full compatibility, quality materials, and performance across three levels.

<h4>Streamlined choice. Trusted quality.</h4>Start your analysis with confidence using Thermo Scientific™ SureSTART™ vials, caps, inserts, well plates, mats, and certified kits designed to meet your analytical, regulatory, and performance requirements. With full instrument compatibility, high material quality, and consistent performance across three defined levels, the SureSTART collection offers a smarter way to choose the right sample containment solution for your workflow.<h3>Why choose SureSTART?</h3><ul><li>Proven reliability: Every product is manufactured and certified to meet physical specifications—no weak links in your workflow.</li><li>Clear selection: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial.</li><li>Universal compatibility: Designed for seamless integration with all major GC, HPLC/UHPLC, and MS autosamplers across all vendors.</li><li>Certified cleanliness: Products are manufactured using the purest glass and plastics with low extractables and leachables, including GOLD-grade and silanized glass.</li><li>Maximum sample integrity: Minimize analyte loss and background peaks with precision-engineered sealing, surface chemistry, and material composition.</li><li>Bulk savings &amp; simplified inventory: Available in multiple pack sizes, performance levels, and formats to support your lab’s needs and budget.</li></ul><h3>The Three Performance Levels</h3><ul><li>Level 1 – Everyday analysis: For general-purpose GC/HPLC detection (e.g. UV/Vis, FID, RI). These chromatography-approved products are ideal for routine analyses with cost-efficiency in mind.</li><li>Level 2 – High-throughput analysis: Designed for regulated labs requiring robust and reproducible data, especially when using MS detectors for routine quantification.</li><li>Level 3 – High performance: For the most sensitive and selective analyses near the method detection limit. Packed in cleanroom environments and made with ultra-pure materials for maximum sample security and MS compatibility.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg 245w," sizes="100vw" width="1182" height="270"><h3>SureSTART Certified Vial and Cap Kits</h3><ul><li>Specification Certified: Routine analyses – Certified for physical specifications; no individual certificate.</li><li>LC/GC Certified: Chromatography-grade – Tested for 15 physical parameters with LC-UV &amp; GC-FID; certificate included.</li><li>MSCERT: For LC-MS/GC-MS – Certified low-adsorption kits tested with MS; includes SureStop™ vials with AVCS™ caps.</li><li>MSCERT+: For trace-level MS or DIA – Pre-cleaned, tested with LC-MS/GC-MS, and sold only as kits to ensure purity.</li><li>Application Certified: Pre-matched kits for specific instruments or validated applications.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: There are several factors to consider when choosing a vial or well plate for your application. The table below will help guide you through this process to determine what type of product/performance level is most suitable for your application requirements." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg 204w," sizes="100vw" width="1515" height="1159"><h3>SureSTART Well Plates and Mats</h3>Thermo Scientific™ WebSeal™ well plates are ideal for laboratories seeking to increase autosampler capacity, reduce solvent usage, and streamline high-throughput workflows. Available in 96- and 384-well formats, they offer a certified alternative to traditional vials and are fully compatible with automated SPE/SLE platforms.<ul><li>Space-saving efficiency: Replace vials with well plates to increase sample capacity up to 8× and reduce storage footprint.</li><li>Flexible performance levels:<ul><li>Level 1: Standard plates for routine, non-regulated use (GC-tested).</li><li>Level 2: Low-bleed plates and high-performance mats, validated for LC-MS/GC-MS.</li><li>Level 3: Premium WebSeal Plate+ with glass-coated plastic wells—ideal for trace analytes and protein adsorption control.</li></ul></li><li>Solvent stability and clean sample contact: WebSeal Plate+ uses nanolayered silicon dioxide for minimal extractables and ultra-low adsorption.</li><li>Compatible sealing options:<ul><li>Silicone mats: For long-term storage and consistent results.</li><li>Pre-slit mats: For autosampler injection without evaporation or contamination.</li><li>Adhesive seals: For single-use workflows and re-sealing options with cavity protection.</li></ul></li></ul>Whether you work with polar solvents, proteins, or trace-level analyses, SureSTART well plates and sealing accessories help you optimize throughput, precision, and data confidence across all chromatography workflows.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Selecting the perfect Thermo Scientific WebSeal well plates and mats for your chromatography requirements is easy using our selector tools and resources." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg 245w," sizes="100vw" width="1516" height="902">

Thermo Scientific QuEChERS Sample Preparation Kits

QuEChERS is a versatile sample preparation method for analyzing pesticides, veterinary drugs, and other residues in various sample types before GC-MS or LC-MS analysis.

<div><div><div><h3>QuEChERS sample preparation—now easier, more convenient, and affordable</h3>QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe)is a sample preparation method that was initially developed in 2003 for analyzing veterinary drugs in food. The method was also tested for pesticide residue analysis in plant material with great success. In 2003, the detailed method was published in the journal AOAC International. Since then, the QuEChERS method has evolved into a sample preparation technique used on a variety of analytes in an expanding number of sample types before analysis by <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/cz/en/home/industrial/mass-spectrometry/gas-chromatography-mass-spectrometry-gc-ms.html">GC-MS</a> or <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/cz/en/home/industrial/mass-spectrometry/liquid-chromatography-mass-spectrometry-lc-ms.html">LC-MS</a>.Thermo Scientific QuEChERS kits contain pre-packaged, ready-weighed salts, sorbents, and buffers to streamline your workflow and minimize the potential for error. The kits are grouped according to your analytes of interest, sample matrix, and preferred QuEChERS method:<ul><li>Original 2003 Method</li><li>AOAC 2007.01 Method</li><li>EN 15662 Method</li><li>NY/T 1380-2007 Method</li></ul>Complete packages—including both extraction and clean-up kits—are available. Extraction-only and cleanup-only kits are also offered to suit your laboratory’s sample preparation needs. These pre-packaged kits save time and money, make QuEChERS procedures easier and more convenient, and ensure quality to yield reproducible results and excellent recoveries for a wide variety of analytes.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_2_1e99f0c81b.jpg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_2_1e99f0c81b.jpg 217w," sizes="100vw" width="891" height="640"><h3>Typical QuEChERS workflow</h3><div><div><div><div><div>As shown in the workflow diagram below, the QuEChERS method has four basic steps:<ol><li>Homogenize sample (fruit or vegetable)</li><li>Extract analytes of interest from a sample using extraction salts (pesticide residues, veterinary drugs, and/or mycotoxins)</li><li>Clean-up the resulting supernatant using dispersive solid phase extraction (dSPE)</li><li>Analyze by GC-MS or LC-MS</li></ol><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_496491ceff.jpeg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_496491ceff.jpeg 245w," sizes="100vw" width="1170" height="706"><div><h3>QuEChERS products</h3></div><div><h4>QuEChERS extraction kits for original 2003 method</h4></div><div>The original QuEChERS method (Anastassiades et al, 2003) was developed by Steven J. Lehotay and Michelangelo Anastassiades in 2003 for the determination of pesticide residues in fruits and vegetables. The original method was created to analyze non-base-sensitive compounds and uses a sodium chloride buffer to reduce polar interferences and enhance extraction. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix. Three different extraction kits are available to support the original 2003 QuEChERS method.<h5>Chemicals used in the original 2003 method</h5></div><ul><li>Acetonitrile: Used to perform single-phase extraction (SPE) on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaCl: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes residual water from sample; reduces polar interference and enhances extraction</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li></ul><div><h4>QuEChERS extraction and clean-up kits for AOAC 2007.01 method</h4>The AOAC 2007.01 QuEChERS Method was developed by Steven J. Lehotay and his co-workers, who modified the original 2003 method to accommodate the use of acetate buffering at higher concentration for greater buffering strength. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix. These extraction and clean-up products here support the AOAC 2007.01 method.<div><h5>Chemicals used in the AOAC 2007.01 method</h5><ul><li>Acetonitrile: Used to perform single-phase extraction on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaOAc: Buffers the sample to stabilize pH</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li><li>GCB: Graphitized carbon black, removes pigment (not recommended for use with planar pesticides)</li></ul><div><h4>QuEChERS extraction and clean-up kits for EN 15662 method</h4>The extraction and clean-up products here support the EN 15662 method. Widely used in Europe, the EN 15662 method was developed by Michelangelo Anastassiades and co-workers, who modified the original 2003 method to accommodate the use of citrate buffering at a relatively low buffering capacity. This variation uses a sodium chloride buffer to minimize polar interferences in addition to sodium citrate dihydrate and disodium citrate sesquihydrate buffers. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix.<h5>Chemicals used in the EN 15662 method</h5><ul><li>Acetonitrile: Used to perform single-phase extraction on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaCl: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes residual water from sample</li><li>Trisodium Citrate: Buffers the sample to stabilize pH</li><li>Disodium Citrate Sesquihydrate: Buffers the sample to stabilize pH</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li><li>GCB: Graphitized carbon black, removes pigment (not recommended for use with planar pesticides)</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_3_721562526f.jpg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_3_721562526f.jpg 245w," sizes="100vw" width="1471" height="488"><div><h4>QuEChERS clean-up kit for NY/T 1380-2007 method</h4></div><div>The NY/T 1380-2007 method is recommended by China Ministry of Agriculture for the QuEChERS Method sample preparation of 51 specific pesticide residues in fruits and vegetables with analysis by GC-MS.<h5>Chemicals used in the NY/T 1380-2007 method</h5><ul><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dSPE step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li></ul></div></div></div></div></div></div></div></div></div></div></div></div>

Products from category Consumables from Thermo Fisher Scientific - page 1

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