Restek is pleased to announce the launch of new pesticide residue standards to meet the specific cannabis analysis needs of Oregon—and states with similar pesticide residue regulations/programs. Dissolved in acetonitrile and formulated for stability, the 59 compounds are separated into 6 x 1 mL solutions with individual analyte concentrations of 600 μg/mL—resulting in a convenient 100 μg/mL solution when blended immediately before use. Designed with quality and convenience in mind, this set of standards eliminates the need for in-house standards preparation. Restek’s Oregon pesticide standards are certified reference materials (CRM) manufactured and QC-tested in ISO-accredited labs.
Restek has expanded its line of LC accessories to bring you even more of what you need to keep your LC flowing. Over 140 new items are now available, including fittings, tubing, mobile phase management and safety supplies, and more.
Featured products include bottle top inlet valves to protect your lab from volatile compounds and your mobile phase from bacterial contamination, outlet valves to regulate pressure during helium sparging, and safety exhaust filters with a color indicator to clearly show when a changeout is needed.
Browse top-quality couplers, fittings, unions, tees, and crosses; PEEK and stainless steel tubing; mobile phase maintenance and safety products including bottle tops, valves, filters, and spargers—and that’s on top of our already wide selection of instrument replacement parts and supplies.
Don’t stop at the column; outfit your entire LC system with Restek LC products. Order now at
Analysts have long enjoyed the benefits of Merlin Microseal septa for their traditional and SPME fiber injections—and now, you can switch to these innovative septa for your SPME Arrow applications, too!
The advantages of the Merlin Microseal septum include elimination of septum coring, longer life, and consistently low insertion force for injections. The Microseal septum incorporates two separate sealing mechanisms. These sliding seals eliminate septum coring and the resulting accumulation of septum crumbs in the injection port liner.
The Restek PAL SPME Arrow is a larger-diameter solid phase microextraction (SPME) probe with a rugged construction that ensures longer life, higher sample throughput, and better sensitivity over traditional SPME fibers. The Merlin Microseal for SPME Arrow is available for many popular instruments and both Restek PAL SPME Arrow sizes (1.1 mm and 1.5 mm). Installation is simple, requiring no modification of the injection port; although, due to the relatively large diameter of Restek PAL SPME Arrows, you must install an instrument-specific GC inlet conversion kit from Restek prior to use.
In addition to these new septa for SPME Arrow applications, Restek also offers Merlin Microseal adapter kits and septa for use in general-purpose (3 to 100 psi), low-pressure (1 to 45 psi), and SPME fiber (3 to 100 psi) applications.
These new guards provide extreme protection from particulates and matrix contamination, extend the lifetime of already rugged and long-lasting Raptor columns, and are proven to withstand the same UHPLC pressures as their analytical column counterparts. UltraShield filters are available for filtering out particulates, minimizing extra column volume, and maximizing sample throughput when using SPE, SLE, or other extensive sample preparations—but new Raptor EXP UHPLC guard column cartridges are an especially valuable alternative when using dilute-and-shoot or other minimal sample preparation techniques.
Further extend the life of your 1.8 μm Raptor UHPLC columns today at www.restek.com/catalog/view/40878
Restek is pleased to announce the launch of a new standard formulation that was developed specifically for methods that couple LC with GC-FID to determine mineral oil hydrocarbon contaminants that migrate from processing equipment and packaging into food. This 10-component mix contains both mineral oil saturated hydrocarbon (MOSH) and mineral oil aromatic hydrocarbon (MOAH) markers that are used to accurately identify GC retention time limits for integration. The new standard complements an existing Restek mix that is used to correctly cut the LC fractions for subsequent GC-FID analysis. Both standards are certified reference materials (CRM) manufactured and QC-tested in ISO-accredited labs.
Designed with GC-MS users in mind, the GC Accelerator kit provides a simple way to speed up sample analysis. By reducing oven volume, these inserts allow faster ramp rates to be attained, which reduces oven cycle time and allows for increased sample throughput and more capacity to process rush samples. When faster ramp rates are used, existing methods can be accurately scaled down to smaller, high-efficiency, narrow-bore columns using Restek’s EZGC method translator. With a scaled-down column, a properly translated method, and a GC Accelerator kit, you can obtain the same chromatographic separation—often with greater sensitivity—in a fraction of the time without making a capital investment.
For years, the QuEChERS approach has made sample preparation faster and easier than traditional methods. Now, the new Q-sep extraction salts from Restek make an easy technique even simpler. Restek’s new, improved design provides the salts in a more granular form, so they flow freely and are easier to pour than powders. The convenient slim packets are easy to open and fit perfectly into extraction tubes, ensuring complete transfer without any spills. These new extraction salts offer the same technical performance you’ve come to expect from the Q-sep line of QuEChERS products, just redesigned for your convenience. Keep your workflow running smoothly with new Q-sep extraction salts from Restek!
And they have just evolved again.
Restek has brought the benefits of Raptor columns to those who have made the leap to UHPLC instruments, yet are still looking to boost their efficiencies further. Already sold with 2.7 and 5 μm superficially porous particles (SPP), Raptor columns are now available with 1.8 μm particles specifically for use with UHPLC. Choose from four distinctive Restek phase chemistries: Biphenyl, ARC-18, C18, and FluoroPhenyl.
Raptor 1.8 μm columns are designed and QC tested for maximum lifetime under UHPLC pressures. And, because they are Raptor SPP LC columns, they offer the peak capacity, selectivity, and reproducibility that analysts have learned to depend on from Restek.
Outfit your UHPLC with evolutionary Raptor 1.8 μm columns today at www.restek.com/raptor
About Raptor SPP LC Columns:
Superficially porous particles (commonly referred to as SPP or “core-shell” particles) changed the world of LC by dramatically boosting column efficiency and reducing analysis times, but they were only the beginning. With Raptor LC columns, Restek chemists have combined the speed of SPP with the resolution of highly selective USLC technology. This new species of chromatographic column allows you to more easily achieve peak separation and faster analysis times without expensive UHPLC instrumentation. Raptor LC columns provide the practicing analyst with the most powerful tools available for fast, efficient method development and increased sample throughput. And, because they are from Restek, Raptor LC columns are backed by manufacturing and quality systems you trust along with internationally renowned Plus 1 service.
Preparing multisolvent reference standards for USP <467> Class 3 residual solvents analysis can be costly, time-consuming, and a source of variation. You can simplify standard preparation significantly and reduce variability by using new, multicomponent Class 3 residual solvents standards from Restek. These new formulations are the only premixed Class 3 reference standards available, and their verified composition and stability bring confidence and consistency to residual solvents analysis. Pair Restek’s new Class 3 standards with our full line of USP <467> standards, GC columns, accessories, and sample vials for a complete residual solvent testing solution.
Growing concern about the impact of partially hydrogenated oils on human heart health makes accurate data on trans fat content in foods critical for protecting consumers. New reference standards from Restek help you ensure that your lab is generating accurate results. In addition to a derivatization agent, we also offer internal and calibration standards of verified composition and stability. Paired with an Rt-2560 GC column, these new reference standards help ensure accurate determination of trans fat content in foods and edible oils, and they are suitable for AOAC and AOCS methods.