Restek is a leading developer and manufacturer of chromatography columns and accessories. We provide analysts around the world with the innovative tools they need to monitor the quality of air, water, soil, foods, pharmaceuticals, chemical, and petroleum products.

Rely on Restek’s experience as a global leader in PFAS analysis. From app notes and webinars to advanced sample prep and analytical techniques, leverage our expertise in PFAS for your analysis. Filmed in association with LabCompare. ----------------------------------------------------------------- Additional Resources Explore Our Vast Library of PFAS Resources | https://www.restek.com/PFAS ----------------------------------------------------------------- Restek Recommended Tools & Parts LC PFAS Products | https://www.restek.com/c/lc-pfas Reference Standards PFAS Products | https://www.restek.com/c/rs-pfas Sample Preparation PFAS Products | https://www.restek.com/c/sp-pfas Air & Gas Sampling PFAS Products | https://www.restek.com/c/AG-PFAS ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

We just returned from another fantastic analytica. Waffles, a quiz, and plenty of chromatography. If you were able to join us, thank you! And if not, you can see a little of what you missed and make your plans for the next analytica! Connect with Us YouTube: https://www.youtube.com/user/RestekCorp LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

Many chromatographers rely on syringes every day to do their work. They need to be accurate and consistent, but also reliable and dependable whether you use them manually or in an autosampler. In this Restek Tip, we cover syringe care and maintenance. What steps can you take to guarantee a long life for your syringe? And how should you properly maintain it to keep it in tip-top condition? ----------------------------------------------------------------- Additional Resources Syringe Basics | https://www.restek.com/articles/syringe-basics Cross Reference for Agilent Syringes | https://www.restek.com/articles/cross-reference-for-agilent-syringes ----------------------------------------------------------------- Restek Recommended Tools & Parts Syringes | https://www.restek.com/c/1361 Sample Preparation Products | https://www.restek.com/c/1103 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

UV detectors are the most common type used in liquid chromatography. Many of us rely on them every day, but if you start to notice errors in your chromatogram, there could be a problem with your detector. In this Restek Tip, we look at some of the issues you might encounter with a UV detector. What should you look out for and what troubleshooting steps can you take? ----------------------------------------------------------------- Additional Resources Effective LC Troubleshooting | https://www.restek.com/articles/effective-lc-troubleshooting-symptom-based-strategies-and-solutions Routine LC Maintenance | https://www.restek.com/articles/routine-lc-maintenance ----------------------------------------------------------------- Restek Recommended Tools & Parts Restek’s LC Accessories - LC-MS Supplies | https://www.restek.com/c/1122 - LC Autosampler Supplies | https://www.restek.com/c/1118 - Mobile Phase Management | https://www.restek.com/c/1123 - LC Detector Supplies | https://www.restek.com/c/1120 - LC Tubing & Fittings | https://www.restek.com/c/1121 - LC Pump Supplies | https://www.restek.com/c/1124 - Tools & Organization | https://www.restek.com/c/1125 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

From sample preparation to sample injection, syringes cover a range of uses in every chromatography lab. But with so many types and options available, how do you know which one to choose? In this Restek Tip, we guide you through a straightforward decision-making process to help you choose a new syringe. ----------------------------------------------------------------- Contents 0:00 Choosing A New Syringe 0:19 Consider Your Application 0:44 Gas Tight or Liquid Syringe? 1:31 Needle Termination 2:17 Gauge and Point Style ----------------------------------------------------------------- Additional Resources Syringe Basics | https://www.restek.com/articles/syringe-basics Cross Reference for Agilent Syringes | https://www.restek.com/articles/cross-reference-for-agilent-syringes ----------------------------------------------------------------- Restek Recommended Tools & Parts Syringes | https://www.restek.com/c/1361 Sample Preparation Products | https://www.restek.com/c/1103 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

Leaks are one of the most common problems users encounter when performing liquid chromatography. Even the smallest leak in your LC system can cause a loss of sample, a drop in efficiency, and break your entire analysis workflow. In this Restek Tip, we investigate the signs of a possible leak and outline the troubleshooting steps you should take if a leak is discovered. ----------------------------------------------------------------- Additional Resources Effective LC Troubleshooting | https://www.restek.com/articles/effective-lc-troubleshooting-symptom-based-strategies-and-solutions Routine LC Maintenance | https://www.restek.com/articles/routine-lc-maintenance ----------------------------------------------------------------- Restek Recommended Tools & Parts EXP Reusable Fittings | https://www.restek.com/search?Ntt=EXP&Ns=bestMatch Restek’s HPLC & UHPLC Columns | https://www.restek.com/c/1119 Restek’s LC Accessories - LC-MS Supplies | https://www.restek.com/c/1122 - LC Autosampler Supplies | https://www.restek.com/c/1118 - Mobile Phase Management | https://www.restek.com/c/1123 - LC Detector Supplies | https://www.restek.com/c/1120 - LC Tubing & Fittings | https://www.restek.com/c/1121 - LC Pump Supplies | https://www.restek.com/c/1124 - Tools & Organization | https://www.restek.com/c/1125 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

LC method development typically involves a lot of trial and error. It occupies precious lab resources and can take a considerable amount of time. Our Pro EZLC chromatogram modeler dramatically speeds up LC method development. Add analytes, test column chemistries, and optimize run conditions virtually and instantly—without needing to make a single injection. And it’s completely free to use. ----------------------------------------------------------------- Additional Resources Pro EZLC Chromatogram Modeler | https://ez.restek.com/proezlc/ ----------------------------------------------------------------- Restek Recommended Tools & Parts Raptor Biphenyl LC Columns | https://www.restek.com/search/analytical-lc-columns/_/N-2069005079?Ntt=Raptor+Biphenyl&Ns=bestMatch Raptor C18 LC Columns | https://www.restek.com/search/analytical-lc-columns/_/N-2069005079+501253238+1182310794?Ntt=Raptor+C18*&page=1&Ns=bestMatch ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

Flowmeters are often seen as essential tools for gas chromatography labs. But, since modern GC instruments feature advanced pressure controls, valves, and built-in flow measurement software, is it necessary to have a handheld electronic flowmeter device? In this Restek Tip, we share some situations where an electronic flowmeter can be used and look at the benefits of using one instead of your instrument. ----------------------------------------------------------------- Contents 0:00 GC Flowmeters 0:34 Why Use a GC Flowmeter? 1:14 Measuring GC Column Flow 1:35 Measuring Fuel Gases 1:56 Calculating Split Ratios 2:12 Verify Results ----------------------------------------------------------------- Additional Resources Restek Electronic Flowmeter FAQ | https://www.restek.com/articles/frequently-asked-questions-proflow-6000-electronic-flowmeter A Primer on Gas Flow | https://www.restek.com/articles/a-primer-on-gas-flow ----------------------------------------------------------------- Restek Recommended Tools & Parts Restek ProFLOW 6000 Electronic Flowmeter | https://www.restek.com/p/22656 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation

Before you can use a new LC column to perform analyses, there are a few important steps you need to do to prepare it for its new life in your lab. In this Restek Tip, we show you how to set up your new LC column. We cover certificate of analyses (CofAs), discuss the different column end-fittings you can use, share how to condition your column for your mobile phase, and finally, we’ll look at how to select an appropriate flow rate for your column. Let’s get started! ----------------------------------------------------------------- Contents 0:00 Preparing a New LC Column 0:46 LC Certificates of Analysis 1:20 Connecting Your LC Column 3:50 Conditioning Your LC Column 4:46 Selecting an Appropriate Flow Rate ----------------------------------------------------------------- Additional Resources Restek Documentation Search | https://www.restek.com/documentation-search Solvent Miscibility and Solubility Chart | https://www.restek.com/articles/solvent-miscibility-and-solubility Restek LC Column Use and Care Instruction Sheet | https://www.restek.com/articles/restek-liquid-chromatography-lc-columns-usage-care/ HPLC and UHPLC FAQ | https://www.restek.com/articles/frequently-asked-questions-hplc-and-uhplc ----------------------------------------------------------------- Restek Recommended Tools & Parts EXP Reusable Fittings | https://www.restek.com/p/25937 Restek’s HPLC & UHPLC Columns | https://www.restek.com/c/1119 Restek’s LC Accessories - LC-MS Supplies | https://www.restek.com/c/1122 - LC Autosampler Supplies | https://www.restek.com/c/1118 - Mobile Phase Management | https://www.restek.com/c/1123 - LC Detector Supplies | https://www.restek.com/c/1120 - LC Tubing & Fittings | https://www.restek.com/c/1121 - LC Pump Supplies | https://www.restek.com/c/1124 - Tools & Organization | https://www.restek.com/c/1125 ----------------------------------------------------------------- Connect with Us Comment on this video and subscribe to Restek's YouTube channel today at https://www.youtube.com/user/RestekCorp Website: https://www.restek.com LinkedIn: https://www.linkedin.com/company/restek-corporation/ Facebook: https://www.facebook.com/RestekCorporation