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APPROACHES
Restek develops and manufactures GC and LC columns, reference standards, sample prep materials, and accessories for the international chromatography industry. Our unbeatable Plus 1 customer service and top-quality products are known world-wide. RESTEK PROFLOW 6000 ELECTRONIC FLOWMETER The Restek ProFLOW 6000 is the only flowmeter you need for any type of chromatography gas measurement because of its wide range of capabilities. The ProFLOW 6000 is an electronic meter capable of measuring volumetric flow for most gases. Real-time measurements can be made for various types of flow paths, including continuallychanging gas types.
RTX-502.2 COLUMNS (FUSED SILICA) Rtx-502.2 Columns (fused silica) Application-specific columns with unique selectivity for volatile organic pollutants. The Rtx-502.2 column is cited in U.S. EPA Method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks. Excellent separation of trihalomethanes; ideal polarity for lighthydrocarbons
GC MULTIRESIDUE PESTICIDE KIT GC Multiresidue Pesticide Kit. Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables, botanicals, and herbals such as tea, ginseng, ginger, echinacea, and dietary supplements. Comprehensive 203-compound kit covers food safety lists by the FDA, USDA, and other global governmental agencies; individualampuls also
RTX-1301 (G43) COLUMNS (FUSED SILICA) Rtx-1301 (G43) Columns (fused silica) low- to midpolarity phase. General-purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds. Equivalent to USP G43 phase. Some dimensions also available as Integra-Guard columns — a guard and analytical column in one to eliminate connection problems! HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND …TRANSLATE THIS PAGE Logiciel de transfert de méthodes Restek Pro EZLC. Le logiciel Pro EZLC permet de transférer rapidement et facilement votre méthode LC existante sur une colonne de dimensions inférieures afin de diminuer vos temps d'analyses, d'augmenter la cadence analytique et SOLVENT EXPANSION CALCULATOR Solvent Expansion Calculator. Adjust solvent, conditions and liner specifications to meet your requirements then "inject" and see what happens. Volumes will calculate automatically. TOPAZ 4.0 MM ID SINGLE TAPER INLET LINER Topaz 4.0 mm ID Single Taper Inlet Liner. Deactivation —unbelievably low breakdown for accurate and precise low-level GC analyses. Reproducibility —unbeatable manufacturing controls and QC testing for superior reliability across compound classes. Productivity —unparalleled cleanliness for maximized GC uptime and labthroughput.
WHY IS MY LC RETENTION TIME SHIFTING? An important factor is whether all of your peaks have shifted or whether it is only certain ones. If all of the peaks are shifted by about the same time interval, the variations are likely caused by variation in flow rate in the instrument. This can be a shift ineither direction,
GC TROUBLESHOOTING POSTER Follow these basic troubleshooting steps to isolate problems related to the sample, injector, detector, and column. Check the obvious explanations first and change only one thing at a time until you identify and resolve the problem. HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND SOLUTIONSREFERENCE STANDARDSCONTACT USGC ACCESSORIESCANNABIS / RESTEKTERPENE ANALYSISAPPROACHES
Restek develops and manufactures GC and LC columns, reference standards, sample prep materials, and accessories for the international chromatography industry. Our unbeatable Plus 1 customer service and top-quality products are known world-wide. RESTEK PROFLOW 6000 ELECTRONIC FLOWMETER The Restek ProFLOW 6000 is the only flowmeter you need for any type of chromatography gas measurement because of its wide range of capabilities. The ProFLOW 6000 is an electronic meter capable of measuring volumetric flow for most gases. Real-time measurements can be made for various types of flow paths, including continuallychanging gas types.
RTX-502.2 COLUMNS (FUSED SILICA) Rtx-502.2 Columns (fused silica) Application-specific columns with unique selectivity for volatile organic pollutants. The Rtx-502.2 column is cited in U.S. EPA Method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks. Excellent separation of trihalomethanes; ideal polarity for lighthydrocarbons
GC MULTIRESIDUE PESTICIDE KIT GC Multiresidue Pesticide Kit. Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables, botanicals, and herbals such as tea, ginseng, ginger, echinacea, and dietary supplements. Comprehensive 203-compound kit covers food safety lists by the FDA, USDA, and other global governmental agencies; individualampuls also
RTX-1301 (G43) COLUMNS (FUSED SILICA) Rtx-1301 (G43) Columns (fused silica) low- to midpolarity phase. General-purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds. Equivalent to USP G43 phase. Some dimensions also available as Integra-Guard columns — a guard and analytical column in one to eliminate connection problems! HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND …TRANSLATE THIS PAGE Logiciel de transfert de méthodes Restek Pro EZLC. Le logiciel Pro EZLC permet de transférer rapidement et facilement votre méthode LC existante sur une colonne de dimensions inférieures afin de diminuer vos temps d'analyses, d'augmenter la cadence analytique et SOLVENT EXPANSION CALCULATOR Solvent Expansion Calculator. Adjust solvent, conditions and liner specifications to meet your requirements then "inject" and see what happens. Volumes will calculate automatically. TOPAZ 4.0 MM ID SINGLE TAPER INLET LINER Topaz 4.0 mm ID Single Taper Inlet Liner. Deactivation —unbelievably low breakdown for accurate and precise low-level GC analyses. Reproducibility —unbeatable manufacturing controls and QC testing for superior reliability across compound classes. Productivity —unparalleled cleanliness for maximized GC uptime and labthroughput.
WHY IS MY LC RETENTION TIME SHIFTING? An important factor is whether all of your peaks have shifted or whether it is only certain ones. If all of the peaks are shifted by about the same time interval, the variations are likely caused by variation in flow rate in the instrument. This can be a shift ineither direction,
GC TROUBLESHOOTING POSTER Follow these basic troubleshooting steps to isolate problems related to the sample, injector, detector, and column. Check the obvious explanations first and change only one thing at a time until you identify and resolve the problem. METHOD SPECIFIC SPE CARTRIDGES Product Name (all) Method Specific SPE Cartridge. Method (all) Organotin: High-capacity cleanup of butyl and phenyl tin compounds from soil, water, and biota. Ultra Quat SPE: For use in HPLC analysis of paraquat/diquat, as an alternative to EPA 549.2. EPA Method 521: Nitrosamines in Drinking Water and EPA Method 522 for 1,4-Dioxane inDrinking
RTX-DHA COLUMNS (FUSED SILICA) Rtx-DHA columns are ideal for DHA methods and easily meet or exceed both ASTM D6730-01 and Canadian General Standards Board CAN/CGSB 3.0 No. 14.3-99 requirements. Every Rtx-DHA column is tested for retention, efficiency, stationary phase selectivity, and bleed—guaranteeing reproducible column-to-column performance.Similar Phases.
GC COLUMN CROSS-REFERENCE Aluminum oxide. C1-C5 hydrocarbons purity analysis of ethylene, propylene, butenes, and halocarbons. Alumina-sulfate. AT-Alumina. GS-Alumina, CP-Al 2 0 3 /Na 2 SO 4. Rt-Alumina BOND/KCl. Aluminum oxide. C1-C8 hydrocarbons; C1-C5 isomers purity analysis of ethylene, propylene, butene, and butadiene. MULTI-LAYER FOIL GAS SAMPLING BAGS Multi-Layer Foil Gas Sampling Bags. Good stability for low molecular weight compounds, such as methane, CO, CO 2, and permanent gases. Chemically inert with light and moisture protection. Not recommended for low ppm VOCs due to background levels. Protective 4-layer barrier minimizes gas permeability. 60 gauge nylon (outer layer. STABILWAX-DA COLUMNS (FUSED SILICA) Stabilwax-DA Columns (fused silica) Application-specific columns for free (underivatized) acids, some inorganic acids. Resistant to oxidative damage. Equivalent to USP G25, G35 phases. Ideal for analyzing distilled liquor and other alcoholic beverages. Custom lengths and film thicknesses available. ULTRA AQUEOUS C18 COLUMNS (USP L1) The Restek Aqueous C18 is a rugged, reversed-phase column with a well-balanced retention profile. It can effectively retain more types of solutes than a conventional C18 and is ideal for multicomponent LC-MS analyses. The general-purpose Aqueous C18 boasts high reproducibility and compatibility with many mobile phase conditions—even 100% aqueous. THE FOUNDATION FOR SEPARATION IS PREPARATION: ION EXCHANGE Regardless of the particular product, ion exchange solid phase extraction (SPE) works on the same basic principal. When it comes to retaining species and subsequently eluting them from the ion exchange SPE sorbent, you start with a charged species in your sample and an oppositely charged sorbent surface. This will create an electrostatic attraction that will result in the charged species being RXI-624SIL MS COLUMNS (FUSED SILICA) Rxi-624Sil MS Columns (fused silica) midpolarity Crossbond phase. Low-bleed, high-thermal stability column—maximum temperatures up to 300–320 °C. Inert—excellent peak shape for a wide range of compounds. Selective—G43 phase highly selective for volatile organics and residual solvents, great choice for USP. TOPAZ GC INLET LINERS In developing Topaz GC inlet liners, our chemists created a new deactivation that yields unbelievably low breakdown. Liner inertness can be described as the reduction in unwanted reactions between a liner and active compounds (and, therefore, a reduction in analyte breakdown and adsorption). Topaz deactivation technology thoroughlypassivates
HOW TO AVOID COMMON PROBLEMS WITH HILIC METHODS Whether you’ve run HILIC methods before or are attempting to for the first time, there are significant differences between reversed-phase and HILIC methods that must be considered. This article addresses common problems that analysts encounter when running HILIC methods and details how to avoid them and successfully use the technique. HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND SOLUTIONSREFERENCE STANDARDSCONTACT USGC ACCESSORIESCANNABIS / RESTEKTERPENE ANALYSISAPPROACHES
Restek develops and manufactures GC and LC columns, reference standards, sample prep materials, and accessories for the international chromatography industry. Our unbeatable Plus 1 customer service and top-quality products are known world-wide. RESTEK PROFLOW 6000 ELECTRONIC FLOWMETER The Restek ProFLOW 6000 is the only flowmeter you need for any type of chromatography gas measurement because of its wide range of capabilities. The ProFLOW 6000 is an electronic meter capable of measuring volumetric flow for most gases. Real-time measurements can be made for various types of flow paths, including continuallychanging gas types.
DOCUMENTATION SEARCH Use Restek's documentation search to view and download safety data sheets (SDSs), certificates of analysis (CofAs), and data packs for various articles, including GC guard columns, LC columns, SPE products, reference standards, and more. RTX-DHA COLUMNS (FUSED SILICA) Rtx-DHA columns are ideal for DHA methods and easily meet or exceed both ASTM D6730-01 and Canadian General Standards Board CAN/CGSB 3.0 No. 14.3-99 requirements. Every Rtx-DHA column is tested for retention, efficiency, stationary phase selectivity, and bleed—guaranteeing reproducible column-to-column performance.Similar Phases.
GC COLUMNS - RESTEK
Tools, request forms, documentation, calculators, and more—direct access to knowledge gained in 35+ years of chromatography. AFLATOXINS (B1, B2, G1, G2) STANDARD (4 COMPONENTS) Not sure which Restek product is the best for your analysis? Consult a Technical Specialist. Catalog #. Units (all) ea. Conc. in Solvent and Volume (all) 10 μg/ml, Acetonitrile, 1 mL/ampul. Product Name (all) Aflatoxins (B1, B2, G1, G2) Standard. CAS Number (all) Clear All.34121.
MXT COLUMNS
MXT Columns: The Perfect Solution for Portable, Process, and High-Temperature GC Analysis. Eliminate GC column breakage at high temperatures; stable up to 450 °C. Flexible metal tubing allows custom coil diameters down to 2.5 inches, giving a perfect fit for even the smallest spaces. Exclusive Siltek treatment produces exceptional inertness GC COLUMN CROSS-REFERENCE Aluminum oxide. C1-C5 hydrocarbons purity analysis of ethylene, propylene, butenes, and halocarbons. Alumina-sulfate. AT-Alumina. GS-Alumina, CP-Al 2 0 3 /Na 2 SO 4. Rt-Alumina BOND/KCl. Aluminum oxide. C1-C8 hydrocarbons; C1-C5 isomers purity analysis of ethylene, propylene, butene, and butadiene. HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND …TRANSLATE THIS PAGE Logiciel de transfert de méthodes Restek Pro EZLC. Le logiciel Pro EZLC permet de transférer rapidement et facilement votre méthode LC existante sur une colonne de dimensions inférieures afin de diminuer vos temps d'analyses, d'augmenter la cadence analytique et RT-2560 COLUMN (FUSED SILICA) Rt-2560 Column (fused silica) highly polar phase; biscyanopropyl polysiloxane—not bonded. Stationary phase selectivity optimized for isomer separation to ensure accurate quantification of critical cis / trans FAMEs. Application-specific QC test guarantees consistent, reliable performance for AOAC 996.06 and AOCS Ce 1j-07 methods. HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND SOLUTIONSREFERENCE STANDARDSCONTACT USGC ACCESSORIESCANNABIS / RESTEKTERPENE ANALYSISAPPROACHES
Restek develops and manufactures GC and LC columns, reference standards, sample prep materials, and accessories for the international chromatography industry. Our unbeatable Plus 1 customer service and top-quality products are known world-wide. RESTEK PROFLOW 6000 ELECTRONIC FLOWMETER The Restek ProFLOW 6000 is the only flowmeter you need for any type of chromatography gas measurement because of its wide range of capabilities. The ProFLOW 6000 is an electronic meter capable of measuring volumetric flow for most gases. Real-time measurements can be made for various types of flow paths, including continuallychanging gas types.
DOCUMENTATION SEARCH Use Restek's documentation search to view and download safety data sheets (SDSs), certificates of analysis (CofAs), and data packs for various articles, including GC guard columns, LC columns, SPE products, reference standards, and more. RTX-DHA COLUMNS (FUSED SILICA) Rtx-DHA columns are ideal for DHA methods and easily meet or exceed both ASTM D6730-01 and Canadian General Standards Board CAN/CGSB 3.0 No. 14.3-99 requirements. Every Rtx-DHA column is tested for retention, efficiency, stationary phase selectivity, and bleed—guaranteeing reproducible column-to-column performance.Similar Phases.
GC COLUMNS - RESTEK
Tools, request forms, documentation, calculators, and more—direct access to knowledge gained in 35+ years of chromatography. AFLATOXINS (B1, B2, G1, G2) STANDARD (4 COMPONENTS) Not sure which Restek product is the best for your analysis? Consult a Technical Specialist. Catalog #. Units (all) ea. Conc. in Solvent and Volume (all) 10 μg/ml, Acetonitrile, 1 mL/ampul. Product Name (all) Aflatoxins (B1, B2, G1, G2) Standard. CAS Number (all) Clear All.34121.
MXT COLUMNS
MXT Columns: The Perfect Solution for Portable, Process, and High-Temperature GC Analysis. Eliminate GC column breakage at high temperatures; stable up to 450 °C. Flexible metal tubing allows custom coil diameters down to 2.5 inches, giving a perfect fit for even the smallest spaces. Exclusive Siltek treatment produces exceptional inertness GC COLUMN CROSS-REFERENCE Aluminum oxide. C1-C5 hydrocarbons purity analysis of ethylene, propylene, butenes, and halocarbons. Alumina-sulfate. AT-Alumina. GS-Alumina, CP-Al 2 0 3 /Na 2 SO 4. Rt-Alumina BOND/KCl. Aluminum oxide. C1-C8 hydrocarbons; C1-C5 isomers purity analysis of ethylene, propylene, butene, and butadiene. HOME - RESTEK CHROMATOGRAPHY PRODUCTS AND …TRANSLATE THIS PAGE Logiciel de transfert de méthodes Restek Pro EZLC. Le logiciel Pro EZLC permet de transférer rapidement et facilement votre méthode LC existante sur une colonne de dimensions inférieures afin de diminuer vos temps d'analyses, d'augmenter la cadence analytique et RT-2560 COLUMN (FUSED SILICA) Rt-2560 Column (fused silica) highly polar phase; biscyanopropyl polysiloxane—not bonded. Stationary phase selectivity optimized for isomer separation to ensure accurate quantification of critical cis / trans FAMEs. Application-specific QC test guarantees consistent, reliable performance for AOAC 996.06 and AOCS Ce 1j-07 methods. TOOLS AND CALCULATORS Tools and Calculators. Whether you want to quickly model a chromatogram, translate a method, find a certificate of analysis, or request a custom Restek product, the tools and calculators below are a great place to start. Pro EZ GC Chromatogram Modeler: Use our popular Pro EZ GC chromatogram modeler for polymer capillary columns to selectphases
GC COLUMNS - RESTEK
Tools, request forms, documentation, calculators, and more—direct access to knowledge gained in 35+ years of chromatography.LOGIN - RESTEK.COM
Remember? Forgot password? Sign Up RESTEK REFERENCE STANDARDS Restek’s Standards Labs: Built for Your Continued Success. By 1990, chromatographers were searching for a source of reference standards that could meet the increasingly stringent requirements of the CLP program, EPA methodology, and other environmental monitoring efforts in the United States. RT-ALUMINA BOND/KCL COLUMNS (FUSED SILICA PLOT) Rt-Alumina BOND/KCl Columns (fused silica PLOT) KCl deactivation. Restek's lowest polarity alumina column. Low moisture sensitivity reduces the need for frequent regeneration. Acetylene elutes before n -butane. Methyl acetylene (impurity in 1,3-butadiene) elutes before 1,3-butadiene. Temperature range: RXI-5SIL MS COLUMNS (FUSED SILICA) Rxi-5Sil MS Columns (fused silica) low-polarity phase; Crossbond 1,4-bis (dimethylsiloxy)phenylene dimethyl polysiloxane. Engineered to be a low-bleed GC-MS column. Excellent inertness for active compounds. General-purpose columns—ideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates ULTRA AQUEOUS C18 COLUMNS (USP L1) The Restek Aqueous C18 is a rugged, reversed-phase column with a well-balanced retention profile. It can effectively retain more types of solutes than a conventional C18 and is ideal for multicomponent LC-MS analyses. The general-purpose Aqueous C18 boasts high reproducibility and compatibility with many mobile phase conditions—even 100% aqueous. STABILWAX-DA COLUMNS (FUSED SILICA) Stabilwax-DA Columns (fused silica) Application-specific columns for free (underivatized) acids, some inorganic acids. Resistant to oxidative damage. Equivalent to USP G25, G35 phases. Ideal for analyzing distilled liquor and other alcoholic beverages. Custom lengths and film thicknesses available. SAMPLE CYLINDERS, HIGH PRESSURE (STAINLESS STEEL Sample Cylinders, High Pressure (Stainless Steel & Sulfinert Treated) 304 L stainless steel to resist corrosion. DOT rating to 1800 psig (TPED cylinders to 1450 psig), which allows sampling at gas wellheads as well as on-site refineries. Range of cylinder sizes: 75 cc – 2250cc.
GLYPHOSATE AND… CANNABIS? By now, you’ve likely heard of Roundup. Roundup is the trade name for the broad spectrum herbicide developed by Monsanto in 1974 and it’s one of the world’s most widely used agricultural weedkillers.
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Check Out Our Industry Pages posted Wed, Oct 16, 2019 GC Inlet Liner Selection, Part IIB: SplitLiners Continued
posted Mon, Oct 14, 2019 Terpene Analysis Approaches – Part I posted Thu, Oct 03, 2019 Thrive with the New Rxi-65…TG! posted Tue, Oct 01, 2019 How Can You Make Food Homogenization Less ofa Grind?
posted Fri, Sep 27, 2019 Pro EZGC Terpene Libraries Update posted Wed, Sep 25, 2019 GC Inlet Liner Selection, Part II: Split Liners View All Posts... GET MORE UPTIME WITH RESTEK’S LONG-LIFE ESI ELECTRODE FOR SCIEXTURBO V SOURCES
Testing shows that Restek Long-Life ESI electrodes for Sciex Turbo V sources provide equivalent chromatographic performance to original equipment manufacturer electrodes over significantly longer lifetimes. Because they perform the same and are less susceptible to corrosive conditions in the MS source, Long-Life ESI electrodes ensure more instrument uptime for sample analysis and are a particularly good choice for high-throughput laboratories.Learn more...
MORE-COMPREHENSIVE CHARACTERIZATION OF CANNABIS WITH NEW CBL STANDARD Restek has just released a new cannabicyclol (CBL) certified reference material (CRM) to further aid labs in the comprehensive characterization of cannabis. With verified composition and stability, this new CBL standard is ideal for creating multipoint calibration curves for LC analysis. And as a U.S. DEA-exempted formulation, no additional customer permits or licensing are required to purchasewithin the U.S.
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NEW LEAK DETECTOR PREVENTS SMALL LEAKS FROM CAUSING BIG PROBLEMS Redesigned and better than ever, Restek’s electronic leak detector lets you pinpoint small gas leaks quickly and accurately before they cause bigger problems. Now, there’s no more waiting for a full charge—the new unit can be operated during charging or used up to 12 hours between charges. In addition, it now comes with a flexible charging kit that includes both a universal AC power adaptor and a USB charging cable so you can charge anywhere, anytime.Get Details...
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