Restek List of News Articles

We are specially releasing past seminar videos that are not usually made public at JASIS2025 'WebExpo'. We have a wealth of useful information for analysts, ranging from basic explanations to advanced techniques. The GC Extreme series and the PFAS series are particularly must-see! #The Blue of RESTEK, Where Innovation and the Future Reside Please be sure to visit the Restek booth at WebExpo.

The reason for the differences in reliability at the analysis site lies in the selection and usage of columns and consumables. Restek's "Extreme Series PLUS" is a seminar series focused on practical skills, directly addressing the practical challenges in GC analysis. This time, we will welcome Mr. Hirofumi Sato from the Osaka Institute of Industrial Technology, who has been involved in the development of GC analysis methods for many years. He will explain the core of practical work, such as "Why choose this column and this liner?" and "How to avoid analysis troubles?" using real experiences and concrete examples. In the latter part of the session, Restek will introduce helpful tools for the field. <Recommended for the following people> - Those who are about to start gas chromatography - Those involved in condition examination and method development - Those who have experienced confusion in selecting consumables - Those who have faced difficulties not knowing the cause of troubles From "choosing somewhat randomly" to "choosing with reasons." Isn't it time to fundamentally reassess the "reliability" of GC analysis?

Restek offers the latest research findings, applications, and customized solutions tailored to customer needs based on valuable feedback from laboratories around the world. When tackling PFAS analysis, Restek will be your strong partner, providing expert support. Please feel free to contact us.

In a webinar hosted by ChromSword Japan Co., Ltd., we will explain Restek's Biphenyl column, which has a unique selectivity different from conventional C18 and phenyl stationary phases. "Restek Biphenyl Column Chemistry Built on 20 Years of Trust and Achievement" Twenty years ago, Restek developed an innovative Biphenyl column to solve separation issues in reversed-phase chromatography. In this webinar, we will thoroughly introduce Restek's Biphenyl column, which has a unique selectivity different from conventional C18 and phenyl stationary phases. https://www.chromsword.co.jp/seminar/hplc_webinar202504/ (Restek Corporation)

PFAS analysis requires trace and high-sensitivity measurements, so even slight differences in operations or settings can lead to significant discrepancies. In this webinar, we will explain practical tips and precautions that can make a difference in the field of PFAS analysis (such as standard reagents, columns, solvents, and contamination prevention measures), along with countermeasures. We will also respond to the questions and concerns received during pre-registration as much as possible, sharing insights that are applicable in the field. 〈Recommended for〉 - Those who are about to start PFAS analysis - Those who are struggling to identify the causes of analytical troubles - Those who want to aim for more accurate and efficient analysis Whether you are just starting PFAS analysis or are an experienced analyst, you are sure to find tips that can be applied to your analysis starting tomorrow. https://register.gotowebinar.com/register/6799833351351237461

PFAS analysis standard materials: 'High reliability as a certified reference material (CRM)' Reliable solutions that cater to various matrices such as drinking water, food, and the environment. This mixed reagent, frequently analyzed as a regulated target, not only reduces the effort of calibration work but also minimizes errors, saves time, and cuts costs. #Restek's PFAS standard materials are suitable for trace (<1%) analysis. Check out Restek's new products for PFAS analysis.

As the demand for extensive PFAS monitoring in drinking water and environmental water (non-drinking water) increases, efficient analytical methods are required. In this study, we developed a simultaneous analysis method targeting alternative (short-chain) and conventional (long-chain) PFAS, as well as ultra-short-chain PFAS, including C2 (ultra-short-chain), C3, C4, C6, C8, and alternative compounds. Below, we report the results of the experiments. For questions or more information about PFAS analysis, please contact us.

The analysis of low-concentration per- and polyfluoroalkyl substances (PFAS) requires high sensitivity and low background levels throughout the entire workflow, from sample collection, transportation, and storage to analytical instrumentation and sample pretreatment. Restek's solid-phase extraction column, the Resprep Polymer WAX SPE cartridge, enables accurate quantification of low-concentration PFAS compounds in drinking water while meeting the requirements of EPA Method 533. For questions or more information about PFAS analysis, please contact us.

A rapid and simple LC-MS/MS method for comprehensive PFAS analysis has been established. It is now possible to consistently analyze ultra-short-chain (C2 and C3), short-chain (C4 to C6), and alternative PFAS, as well as long-chain PFAS (C8 and above). Compounds containing trifluoroacetic acid (TFA), which are difficult to retain with conventional methods, can be reliably retained and analyzed using the Raptor Polar X column. If you are experiencing issues with weak retention on reverse phase columns or other columns that exhibit strong ion exchange mechanisms, leading to overly strong retention or poor peak shapes, please take a look at this. https://www.restek.com/global/ja/articles/japanese-novel-stationary-phase-for-comprehensive-pfas-analysis-ultrashort-chain-c2-c3-alternative-and-legacy-compounds For questions or more detailed information about PFAS analysis, please feel free to contact us.

PFAS is concerning due to its wide range of applications and high persistence in the environment. As a result, accurate detection and measurement of PFAS are required, but there are several challenges in its analysis. - Difficulty in trace detection - Risk of PFAS contamination from the analytical equipment itself ■ Challenge Solution: "Delay Column" The delay column is becoming increasingly important for managing PFAS contamination within analytical equipment: * Removal of background PFAS * Improvement of measurement accuracy - clearly distinguishing PFAS from the equipment and from the sample * Increased reliability - reducing the risk of overestimating the amount of PFAS present in the sample We provide a clear explanation in a 3-minute and 23-second video. Japanese subtitles are also available! Please take a look. https://www.restek.com/global/ja/videos/pfas-analysis-%E2%80%93-why-a-delay-column-is-important-japan For questions or more detailed information about PFAS analysis, please contact us.

PFAS are widely present in the environment and it has become very important to monitor the types and quantities of ultra-short-chain PFAS found in various water sources, such as groundwater, seawater, and industrial water, as well as the extent of human exposure to them. However, small and highly polar compounds with carbon chain lengths of less than C4 (ultra-short-chain PFAS) are currently difficult to analyze using standard PFAS analytical methods based on reverse-phase liquid chromatography (RPLC). In this study, we developed an LC-MS/MS analytical method that can accurately and reliably quantify ultra-short-chain PFAS (C1 to C4) in drinking water and non-drinking water. Additionally, to simplify the analytical process and avoid contamination risks during the sample pretreatment process, we adopted a direct injection workflow. For questions or more information about PFAS analysis, please contact us.

It has become important to thoroughly and accurately analyze dairy products that have a high probability of detecting high concentrations of PFAS. We have developed a highly sensitive and reliable analytical method for PFAS analysis in dairy products using LC-MS/MS, which can detect levels as high as 0.01 µg/kg. This method targets four types of PFAS evaluated by EFSA and 24 compounds (PFAS) included in the guidance document regarding halogenated persistent organic pollutants (POPs) in feed and food. If you have any questions or would like to know more about PFAS analysis, please contact us.

Choosing the right lab supplies for PFAS analysis is a very challenging task. Furthermore, there are many methods for PFAS analysis, each requiring different sample preparation techniques and analytical instruments, making product selection even more complex. In particular, selecting the optimal lab supplies is essential for accurately detecting trace-level compounds such as ultra-short-chain PFAS and short-chain PFAS, which are not yet included in government guidelines. By referring to the product guide table on the next page, you can find suitable products for PFAS analysis. This guide features products that comply with analytical methods established by the CDC, EPA, FDA, USDA in the U.S., as well as DIN in Europe, and international standards such as ASTM and ISO. Be sure to verify that the selected products do not contain the PFAS being analyzed and meet the required analytical levels. If you have any questions or would like to know more about PFAS analysis, please feel free to contact us.

What is the "Extreme Series"? It is a specialized webinar series that delves into the depths of Restek's proud GC columns from both theoretical and practical perspectives. We provide insights that go beyond mere catalog specifications, sharing "wisdom and techniques for effective use" that we can discuss because we develop and manufacture in-house, explained clearly from a practical standpoint. Second Theme: "PLOT Columns" PLOT (Porous Layer Open Tubular) columns are essential for the separation of volatile compounds and gaseous components. However, we often hear feedback such as, "Honestly, it's difficult to choose," "Peak shapes can sometimes be unstable," and "Results can vary depending on the sample." In this webinar, we will thoroughly explain the know-how to elevate your use of PLOT columns from a stage of "using them somewhat" to a level of "selecting, using, and mastering" them.

Since the U.S. Environmental Protection Agency (EPA) announced Method 537 and ISO 25101:2009 in 2009, the establishment of testing methods for PFAS (per- and polyfluoroalkyl substances) has progressed. These methods primarily focus on specific compounds in water, emphasizing the importance of water quality regulations. In recent years, as the variety of PFAS compounds has increased and the need to address diverse matrices such as soil, air, and food has arisen, government agencies, academic institutions, and industry in various countries have collaborated to develop new testing methods and create related guidance documents. This article provides the latest information on regional PFAS testing methods and regulatory responses, outlining the recommended products for each testing method. For specific testing methods and usage guidelines, please refer to the URL below. https://www.restek.com/global/ja/articles/guide-to-pfas-testing-methods-japan If you have any questions or would like to know more about PFAS analysis, please feel free to contact us.

Sample Matrix: Soil Sample Preparation: Solvent Extraction and Filtration Detection Technique: LC-MS/MS Standard quantitative analysis method for polyfluoroalkyl substances in soil according to US ASTM D7968-23 (by LC-MS/MS). US ASTM D7968-23 is a method for analyzing 21 types of PFAS in soil. While we cannot provide documentation from Restek, it can be purchased and verified from the American Society for Testing and Materials (ASTM). For a list of recommended consumables/products required for PFAS analysis in soil according to US ASTM D7968-23 and the target PFAS (compound names), please refer to the URL below. https://www.restek.com/global/ja/articles/pfas-analysis-by-astm-d7968-23-for-soil-japan If you have any questions or would like to know more about PFAS analysis, please feel free to contact us.

Twenty years ago, Restek brought about an innovative change in the field of chromatography. This was the development of the Biphenyl column, a completely new approach to solving the challenges of LC separation faced by chromatographers. The Biphenyl column possesses a highly unique selectivity that sets it apart from traditional C18 columns and other phenyl columns, and due to its high separation performance, it has become an essential tool for many researchers. Even today, with imitations circulating in the market, Restek continues to prioritize originality and innovation. #A History That Begins with Restek Experience the power of the Biphenyl column now. https://www.restek.com/global/ja/articles/restek-biphenyl-japan

"I want to improve separation," "I want to shorten analysis time," "But I want to keep the current equipment..." For many analysts facing such challenges, core-shell particles are a reconsideration-worthy option. In this webinar, we will explain in detail and in an easy-to-understand manner the true capabilities of core-shell columns, which cannot be fully captured by the conventional indicator of "theoretical plates." We will introduce the appeal of achieving the three benefits of "speed, separation, and cost" at a high level, along with the structural principles that support it, and the real know-how that can only be shared by a column manufacturer, using actual data and case studies. For everyone who wants to "change analysis without changing equipment." Now is the time to reconsider the option of core-shell.

In the analysis of low-concentration glycol in water samples using splitless injection, it is difficult to obtain stable results. This is mainly due to issues such as backflushing, abnormal peak shapes, and retention time shifts. The split injection method presented here can avoid these problems and ensure good chromatography results. Durability tests confirmed that the Rtx-Wax column produces stable results even after 600 water injections. For more details, please download and refer to the application note. RESTEK

The "Extreme Series" is launching! The first session will delve into the essence of WAX columns. Starting this year, the "Extreme Series" is a deep-dive seminar on GC columns that only Restek can offer. We will introduce specialized knowledge and practical techniques that you won't hear anywhere else. ◎ A must-see for everyone from beginners to professionals We have prepared content that will provide new discoveries and learning opportunities for GC users. ◎ Thorough explanation of WAX column characteristics from basics to applications We will provide knowledge that is easy to understand for beginners and can be immediately applied to actual analysis work. ◎ Advanced topics for experts are also abundant For those who want to deepen their knowledge, we will cover how to select suitable WAX columns for each application and optimize the separation of specific compounds. Would you like to explore the profound world of GC WAX columns with Restek's "Extreme Series"? We will deliver practical learning for beginners and satisfying information for professionals. We hope you will join us! https://register.gotowebinar.com/register/557490224387195481

This webinar is a foundational seminar aimed at those who want to start analyzing PFAS (per- and polyfluoroalkyl substances) in food or those who have just begun and feel uncertain. It provides a thorough understanding of the basics and tips. We will carefully explain the entire analysis workflow from sample extraction preprocessing to chromatography acquisition, making it easy for beginners to understand the fundamental aspects of each technique, along with useful tips and precautions for analysis. Additionally, we will introduce the latest regulations and international standards based on FDA, AOAC, and EURL POPs guidelines, highlighting recommended conditions and key points for each protocol to help you master optimal methods for obtaining accurate data. Participants will deepen their knowledge to achieve efficient and reproducible results through the analysis workflow, acquiring skills that can be immediately applied in practice. Let's build a solid foundation for starting PFAS analysis in this seminar. <Recommended for> Beginners Less experienced technicians

Emergency Seminar! This time, we will focus on the pretreatment of PFAS in environmental samples, as inquiries have surged. The measurement of PFAS is becoming increasingly important in the field of environmental testing. In particular, accurate and efficient quantitative analysis is required in complex matrices such as non-potable water (like wastewater and rivers), soil, and biosolids. In light of this, we have seen a rapid increase in inquiries regarding PFAS pretreatment in accordance with EPA Method 1633 since the end of last year. Therefore, we are urgently holding a seminar to address these challenges. This seminar will focus on improving the pretreatment process to efficiently advance PFAS analysis, detailing the challenges and specific solutions for PFAS extraction from environmental samples. <Recommended for> Those who want to learn about the pretreatment of the latest Method 1633, Revision A Those interested in measuring PFAS in environmental water and pretreatment Those who want to simplify the procedures for PFAS pretreatment https://register.gotowebinar.com/register/8028605763632700251

Using SPME Arrow and the PAL CTC autosampler for sample preparation, and the Rxi-624Sil MS column for analysis, we established the GC-MS optimization conditions for furan and alkylfurans in infant formula and coffee samples. The results of this experiment revealed that sample preparation using SPME Arrow is suitable for a variety of sample types containing high and low concentrations of furan and alkylfurans. Compared to using only headspace or a combination of SPME and HS, using SPME Arrow alone for sample preparation is expected to enhance productivity in food safety inspection laboratories. For more details, please download and refer to the application note. RESTEK

Release of online software for speeding up and simplifying GC method development! You can access the EZGC Chromatogram Modeler here! https://ez.restek.com/proezgc/en Restek

Testing for volatile organic compounds (VOCs) in drinking water is widely conducted to ensure its safety. Furthermore, odor compounds such as methyl isoborneol (MIB) and geosmin are monitored as they cause unpleasant odors, making them subjects of analysis. This study aimed to develop a method that integrates the analysis techniques for VOCs and odor compounds, which are typically conducted separately, to achieve high sample throughput. Solid-phase microextraction (SPME) Arrow is a particularly useful technique as it allows for sample pretreatment and sample introduction to be performed with a single device. Additionally, SPME Arrow can be automated using a rail-type autosampler, significantly reducing the time required for sample pretreatment. In this study, we proposed a method for efficiently measuring VOCs and odor compounds in drinking water by combining a simplified sample pretreatment workflow with headspace-solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS). For more details, please download and refer to the application note. RESTEK

"Solvent-free solid-phase microextraction (SPME)" is a technique that reduces the labor of sample preparation compared to traditional liquid-liquid extraction and headspace methods, achieving high sensitivity and reproducibility in analytical results. Even though SPME is a single term, have you ever been confused about "which type to choose?" due to the various extraction phases available? In this seminar hosted by Restek, we will clearly explain the selection of SPME and practical optimization methods, incorporating specific examples, making it easy for beginners to understand. Let's acquire the basic knowledge for choosing SPME without confusion and establish efficient analytical methods! <Recommended for the following individuals> * Those who want to learn about the basics and technology of SPME * Those who find it difficult to choose the appropriate liquid phase for their applications * Those who want to try new SPME options like Smart or Arrow, etc. ************************** For more details and to register, click here https://register.gotowebinar.com/register/3002694131704463193 **************************

Q. Which of the following is an appropriate main factor contributing to improved sensitivity in SPME? ----------------------------- 1. Choose samples with high polarity 2. Increase the extraction temperature 3. Remove the fiber quickly 4. Choose the appropriate coating ----------------------------- We will hold a webinar (online seminar) full of insights for those who are unsure of the answer and for those who can answer immediately. Restek will explain in an easy-to-understand manner for beginners in SPME, covering everything from how to choose SPME to practical optimization techniques, along with specific examples. Reduce the hassle of sample preparation! We look forward to your participation! ＊＊＊＊＊＊ ■ Online Seminar "Never be confused again! How to choose SPME and best practices (45 minutes)" Date: January 30, 2025 (Thursday) 13:30–14:15 / Free https://register.gotowebinar.com/register/3002694131704463193 ＊＊＊＊＊＊ ★ The answer was '4. Choose the appropriate coating' ★

Simulate up to 60 PFAS components for free! Speed up and simplify LC method development with the 'Pro EZLC' Chromatogram Modeler. The new Restek 'Pro EZLC' has become even more user-friendly and is a powerful LC chromatogram simulation tool. By simply selecting the desired compound and column stationary phase from the PFAS library, you can create analytical conditions. Additionally, optimization is possible by changing other parameters such as column size, particle diameter, mobile phase, and gradient conditions to meet specific method requirements. You can also simultaneously confirm the separation from bile acids, which have recently gained attention as contaminants, making it efficient! ■ Increase productivity with easy-to-use free software! ■ Includes PFAS library (60 PFAS-related compounds and 3 bile acids)! ************************** For details and free software login, click here https://ez.restek.com/proezlc/ja **************************

Regulations on per- and polyfluoroalkyl substances (PFAS) are being strengthened in countries around the world. Restek will introduce key analytical points to keep in mind for PFAS analysis using liquid chromatography. ■ What are PFAS? ■ Approach using reverse phase chromatography ■ Role of the delay column ■ Analysis including ultra-short-chain PFAS ■ Separation simulation using Pro EZLC Chromatogram Modeler *This will be a 38-minute and 36-second webinar (with audio). --------------------------- <How to view> 1. Click the orange button "Details & Registration" at the bottom left. 2. When the "Display this record" screen appears, enter your first name, last name, and email address, then click the "Register" button. 3. The webinar screen will be displayed. You can start viewing. ---------------------------

Simulate up to 60 PFAS components for free! Speed up and simplify LC method development with the 'Pro EZLC' Chromatogram Modeler. The new 'Pro EZLC' has become even more user-friendly and is a powerful LC chromatogram simulation tool. By simply selecting the desired compound and column stationary phase from the PFAS library, you can create analytical conditions. Additionally, optimization through changes in other parameters such as column size, particle diameter, mobile phase, and gradient conditions is possible to meet specific method requirements. You can also simultaneously check the separation from bile acids, which have recently garnered attention as contaminants, making it efficient! ■ Increase productivity with easy-to-use free software! ■ Includes a PFAS library (60 PFAS-related compounds and 3 bile acid components)! ************************** For details and free software login, click here https://ez.restek.com/proezlc/ja **************************