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Rapidly Analyze a Wide Range of Glycol Ethers by GC-MS Using the New Rxi®-1301Sil MS Column

Chromatographic conditions were developed for a fast GC-MS glycol ether analysis on the Rxi®-1301Sil MS column. This column provides better resolution and faster run times than the thick film cyanopropylphenyl-type columns commonly used for speciation of the glycol ethers.
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Helium, Hydrogen, or Nitrogen—The Choice is Yours: Unique Rtx®-CLPesticides Column Set Provides Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas

Using an Rtx®-CLPesticides column set is the best strategy for labs considering alternate carrier gases as a way to reduce helium consumption. These columns have a unique selectivity and produce faster results than competitor columns when using either helium or hydrogen. In addition, only Rtx®-CLPesticides columns can be used with nitrogen, which give labs the freedom to choose the carrier gas option that is best for them.
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Virtually Particle-Free Rt®-Silica BOND Columns Provide Reliable PLOT Column Performance With Less Time Lost for Maintenance

Get PLOT column performance and minimize maintenance by using Rt®-Silica BOND PLOT columns from Restek. These columns offer the retention and capacity needed for the analysis of light hydrocarbons, sulfur gases, halocarbons, and permanent gases, while providing nearly particle-free operation which results in less down time for maintenance and more stable retention times. Every column is QC tested with sensitive C4 probes to ensure consistent column-to-column selectivity.
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NEW! Rt®-Silica BOND Columns

Rt®-Silica BOND PLOT columns from Restek are ideal for light hydrocarbon, permanent gas, and CFC analyses. We individually QC test every column with sensitive C4 probes to ensure consistent column-to-column selectivity. Our proprietary manufacturing process practically eliminates particle release, resulting in highly stable retention times.
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Raptor Biphenyl LC Columns Brochure

Raptor™ LC columns combine the speed of superficially porous particles (i.e., SPP or “core-shell”) with the resolution of highly selective USLC® technology. Featuring Restek's most popular LC stationary phase, the rugged Raptor™ Biphenyl is extremely useful for fast separations in bioanalytical testing applications like drug and metabolite analyses, especially those that require a mass spectrometer (MS).
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Rxi®-624Sil MS Columns: Exceptionally Inert, Low Bleed Columns for Volatiles Analysis

Analyze volatile compounds and polar analytes with greater confidence using Rxi®-624Sil MS columns. Optimized selectivity, higher inertness, and lower bleed result in reliable separations and accurate, trace-level determinations. Includes environmental and pharmaceutical applications.
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Ensure Successful Polycyclic Aromatic Hydrocarbon (PAH) Analysis—Choose Specialized Rxi®-PAH Columns

Whether you are analyzing comprehensive lists or focusing on the EFSA PAH4, the Rxi®-PAH column ensures your success by combining efficiency, selectivity, and robustness to produce a column that outperforms all competitors’ columns. Chose the configuration that best suits your application and be confident that you are reporting accurate results without bias from interferences.​
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Analysis of Nicotine and Impurities in Electronic Cigarette Solutions and Vapor

Despite the growing popularity of electronic cigarettes, relatively little work has been done to characterize their vapor. In this study, we developed a quick, simple thermal desorption device for sampling vapor, as well as methods for analyzing vapor and solutions to determine nicotine content (GC-FID) and impurity profiles (GC-MS). This novel approach, which utilizes an Rtx®-VMS column, provides detectable levels of volatile organic compounds (VOCs) and semivolatile organic compounds (SVOCs) from a single 40 mL puff.
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Rapid and Accurate LC-MS/MS Analysis of Nicotine and Related Compounds in Urine Using Raptor™ Biphenyl LC Columns and MS-Friendly Mobile Phases

A rapid, accurate, and reproducible method was developed for high-throughput testing of nicotine, cotinine, trans-3’-hydroxycotinine, nornicotine, norcotinine, and anabasine in urine. Data show that a fast and highly efficient analysis of these basic compounds can be achieved with the Raptor™ Biphenyl column using standard, low pH, reversed-phase LC-MS mobile phases that are compatible with a variety of LC-MS instrumentation.
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Fast, Robust LC-MS/MS Method for Quantification of Multiple Therapeutic Drug Classes Using an Ultra Biphenyl Column

Therapeutic drug monitoring requires streamlined, cost-effective testing procedures. This article details a fast, robust LC-MS/MS method for the quantification of 29 therapeutic drugs and metabolites in urine from several classes including opiates, benzodiazepines, tricyclic antidepressants, and anticonvulsants. Good linearity, accuracy, and precision results were obtained for most analytes in a fast, 5.5-minute analysis.
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