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Essentials

Columns

Rxi Capillary GC Columns

Leverage the outstanding inertness, low bleed, and high reproducibility of Rxi GC Columns with 3-in-1 technology to gain:
  • Accurate Data
  • The Right Results Fast
  • Maximized Instrument Uptime

Force Biphenyl LC Columns (USP L11)

  • Ideal for bioanalytical testing applications like drug and metabolite analyses.
  • Heightened selectivity and retention for compounds that are hard to resolve or elute early on C18 and other phenyl chemistries.
  • Limits ionization suppression and allows simple, MS-friendly mobile phases.
  • Restek’s most popular LC stationary phase.

Force FluoroPhenyl LC Columns (USP L43)

  • Capable of both reversed-phase and HILIC separations.
  • Ideal for increasing sensitivity and selectivity in LC-MS analyses.
  • Offers increased retention for charged bases.

Force C18 LC Columns (USP L1)

  • A traditional end-capped C18 ideal for general-purpose use in reversed-phase chromatography.
  • Wide pH range (2–8) provides excellent data quality for many applications, matrices, and compounds.
  • Offers high hydrophobic retention.

Raptor Biphenyl LC Columns (USP L11)

  • Ideal for bioanalytical testing applications like drug and metabolite analyses.
  • Heightened selectivity and retention for compounds that are hard to resolve or elute early on C18 and other phenyl chemistries.
  • Limits ionization suppression and allows simple, MS-friendly mobile phases.
  • Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.

Raptor FluoroPhenyl LC Columns (USP L43)

  • Capable of both reversed-phase and HILIC separations.
  • Ideal for increasing sensitivity and selectivity in LC-MS analyses.
  • Offers increased retention for charged bases.
  • Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.
  • Switch to a Raptor FluoroPhenyl LC column when you need more retention and selectivity for basic and hydrophilic compounds than you can achieve on a C18.

Raptor ARC-18 LC Columns (USP L1)

  • Ideal for high-throughput LC-MS/MS applications with minimal sample preparation.
  • Well-balanced retention profile for better detection and integration of large, multiclass analyte lists.
  • Sterically protected to endure low-pH mobile phases without sacrificing retention or peak quality.
  • Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.

Raptor C18 LC Columns (USP L1)

  • A traditional end-capped C18 ideal for general-purpose use in reversed-phase chromatography.
  • Wide pH range (2–8) provides excellent data quality for many applications, matrices, and compounds.
  • Offers the highest hydrophobic retention of any Raptor phase.
  • Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.

Raptor EtG/EtS LC Column

  • Proven performance for accurate, reliable ethyl glucuronide (EtG) and ethyl sulfate (EtS) analysis.
  • Strong retention consistently resolves analytes from matrix interferences.
  • Long column lifetime ensures consistent performance injection after injection.
  • Fast, 4-minute, dilute-and-shoot LC-MS/MS analysis supports high sample throughput.

Raptor HILIC-Si LC Columns (USP L3)

  • HILIC silica column designed for increased retention of polar compounds without ion-pairing reagents.
  • 2.7 µm Raptor core-shell particles provide the speed of SPP, with greater efficiency and capacity than 5 µm particles.
  • Ideal for increasing sensitivity and selectivity in LC-MS analyses.
  • Fully compatible with both HPLC and UHPLC when using low back-pressure HILIC mobile phases.
  • Switch to a Raptor HILIC-Si LC column when you need more retention and resolution of hydrophilic, polar analytes.

Force EXP Guard Column Cartridges

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connectionsno tools needed.
  • Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
  • Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.

Raptor EXP Guard Column Cartridges

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connectionsno tools needed.
  • Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
  • Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.

EXP Direct Connect Holder

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connectionsno tools needed.
  • Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
  • Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.
  • EXP direct connect holder requires separate guard column cartridges; available from Restek in 2.1, 3.0, and 4.6 mm.

UltraShield UHPLC PreColumn Filter

  • Cost-effective protection for UHPLC systems.
  • Reliable way to filter out particulates and extend column lifetime.
  • Minimize extra column volume and maximize UHPLC sample throughput vs. guard cartridges.
  • Universal fitconnects easily to any brand column.
  • Leak-tight to 15,000 psi (1,034 bar).
  • 0.5 µm or 0.2 µm stainless steel frit in a stainless steel body with PEEK ferrule.

Reference Standards

LC Multiresidue Pesticide Kit

  • Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.
  • Full kit contains 204 compounds of interest, covering many LC-determined pesticides listed by government agencies; individual ampuls also sold separately.

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; individual ampuls also sold separately.

QuEChERS Performance Standards Kit

  • Designed for use in all QuEChERS methods for pesticides in fruits and vegetables, including the original unbuffered method, AOAC 2007.01, and EN 15662.
  • Kit contains organochlorine, organonitrogen, organophosphorus, and carbamate pesticides commonly used on fruits and vegetables.
  • Volatile, polar, active, base-sensitive, and nonvolatile compounds are included to allow comprehensive evaluation of QuEChERS extraction and cleanup efficiencies, and optimization of GC and LC instrumental conditions.
  • Ideal for initial method evaluations and ongoing method performance validations.
  • Analytes are divided into three ampuls based on compatibility for maximum stability and shelf life.*
  • Precise formulations improve data quality and operational efficiency; spend more time running samples and less time sourcing and preparing standards.
  • Quantitatively analyzed to confirm the composition and stability of each mixture.

    *When combining compounds with different functionalities, chemical stability can be an issue. The analytes in this kit are separated into three mixes to ensure maximum long-term storage stability. For analysis, a fresh working standard should be prepared by combining the three kit mixes in a 1:1:1 ratio to prepare a 100 µg/mL working standard solution. Once blended, Restek does not recommend storing working standards or subsequent dilutions for future use.

    Contains 1 mL each of these mixtures.
    31153: QuEChERS Performance Standard A
    31154: QuEChERS Performance Standard B
    31155: QuEChERS Performance Standard C

QuEChERS Reference Standards

Browse our comprehensive list of QuEChERS reference standards, including internal standards and mixes for AOAC QuEChERS methods.

MOSH/MOAH Retention Time Standard (10 components)

  • Developed specifically for using LC coupled with GC-FID to accurately determine hydrocarbons found in mineral oils, which can 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.

Residual Solvents Class 3 - Mix A (24 Components)

  • Multicomponent mixes simplify standard prep and reduce variability.
  • Ideal for USP <467> residual solvents analysis.
  • Verified composition and stability.

Residual Solvents Class 3 - Mix B (2 components)

  • Multicomponent mixes simplify standard prep and reduce variability.
  • Ideal for USP <467> residual solvents analysis.
  • Verified composition and stability.

trans Fat Reference Standard (13 components)

  • For accurate determination of trans fat content in foods and edible oils.
  • Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
  • Verified composition and stability.

Triundecanoin

  • For accurate determination of trans fat content in foods and edible oils.
  • Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
  • Verified composition and stability.

Tritridecanoin Glyceride

  • For accurate determination of trans fat content in foods and edible oils.
  • Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
  • Verified composition and stability.

Boron Trifluoride

  • For accurate determination of trans fat content in foods and edible oils.
  • Pair with an Rt-2560 GC column for reliable AOAC and AOCS method performance.
  • Verified composition and stability.

    Boron trifluoride is very sensitive to moisture and should not be stored after opening. This is a single-use container.

Supplies & Accessories

EXP2 Reusable Fittings for HPLC & UHPLC

for 10-32 fittings and 1/16" tubing

  • Unique nut driver allows easy 20,000+ psi seals without wrenches.*
  • Patented ferrule can be installed repeatedly without compromising high-pressure seal.
  • Precision design provides zero-dead-volume (ZDV) connection to any 10-32 port.
  • Compact design fits in tight spaces, perfect for small oven compartments and six-port injection valves.
  • Non-swaged ferrules mean vendor-specific tubing is not required.
  • Suitable for both HPLC and UHPLC.

    *Rated to 20,000+ psi (1,400 bar) and tested to 30,000 psi (2,068 bar).

GC Accelerator Oven Insert Kit

for Agilent 6890 and 7890 instruments

  • Get the same GC separation in less time—use a GC Accelerator kit and the EZGC method translator to accurately convert methods to a scaled-down column format.
  • Scaled-down methods let you speed up analysis time and increase sample throughput without capital investment.
  • GC Accelerator kit installs easily without damaging the GC column or interfering with the MS interface.

Restek Super Clean Gas Filter Kits

  • High-purity output ensures 99.9999% pure gas (at max. flow of 2 L/min).
  • Designed for easy, hassle-free cartridge changes.
  • Glass inside to prevent diffusion; polycarbonate housing outside for safety.

Gas Generators

Featuring Parker Balston hydrogen, nitrogen, zero air, and other generators as well as maintenance kits.

Finger-Tight Capillary Column Nuts

  • Allow wrench-free column installations.
  • Available for standard (1/16") and compact (Agilent-style) ferrules.
  • Made from high-quality stainless steel.

Active Inlet Cartridge

for Agilent HPLC Systems

Sample Handling

Thomson SINGLE StEP eXtreme Filter Vials

  • Provide multilayer filtration for viscous samples and samples containing up to 30% solid particulates.
  • Allow compounds to be separated from matrix, resulting in both higher signal-to-noise ratios and more differentiated peaks.
  • Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers.
  • Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, PES, or nylon.
  • Pre-slit PTFE/silicone caps help eliminate broken autosampler needles and cored septa.
  • Rugged polypropylene vial houses insert with 450 μL loading capacity and low dead volume (120 μL).
  • Fit most standard 12 x 32 mm autosamplers, including UHPLC instruments.

Thomson SINGLE StEP Standard Filter Vials

  • Recommended for samples containing less than 10% solid particulates.
  • Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers.
  • Minimize sample loss by eliminating multiple transfers.
  • Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, PES, or nylon.
  • Preslit PTFE/silicone caps help eliminate broken autosampler needles and cored septa.
  • Rugged polypropylene vial houses insert with 450 μL loading capacity and low dead volume (120 μL).
  • Fit most standard 12 x 32 mm autosamplers, including UHPLC instruments.

Thomson SINGLE StEP Low Evaporation Filter Vials

  • Enhanced evaporation prevention technology ensures less than 0.4% evaporation over 24 hours.
  • Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers.
  • Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, or nylon.
  • Rugged polypropylene vial houses insert with 450 μL loading capacity and low dead volume (120 μL).
  • Fit most standard 12 x 32 mm autosamplers, including UHPLC instruments.

Thomson SINGLE StEP Nano Filter Vials

  • Ultra-low dead volume allows you to filter as little as 10 μL of sample and still obtain enough filtrate to make a 2 μL injection.
  • Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers.
  • Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, PES, or nylon.
  • Available with either standard or pre-slit PTFE/silicone caps. Standard caps minimize evaporation and pre-slit caps help eliminate broken autosampler needles and cored septa.
  • Rugged polypropylene vial houses insert with 250 μL loading capacity and extremely low dead volume (8 μL).
  • Fit most standard 12 x 32 mm autosamplers, including UHPLC instruments.

Q-sep QuEChERS Extraction Salts

  • Free-flowing salts transfer easily and completely.
  • Easy-open packets eliminate the need for a second empty tube for salt transfer.
  • Convenient slim packets fit perfectly into tubes to prevent spills.
  • Ready-to-use tubes, no glassware required.
  • Pre-weighed, ultra-pure extraction salts.
  • Ideal for original unbuffered, AOAC (2007.01), and European (EN 15662) QuEChERS methods.

Q-sep QuEChERS dSPE Tubes for Extract Cleanup

Fast, Simple Sample Prep for Multiresidue Pesticide Analysis

  • Packaged in foil subpacks of 10 for enhanced protection and storage stability.
  • Ready-to-use tubes, no glassware required.
  • Pre-weighed, ultra-pure sorbents.
  • Support original unbuffered, AOAC (2007.01), European (EN 15662), and mini-multiresidue QuEChERS methods.

Restek PAL SPME Arrow

  • Rugged stainless steel construction ensures longer lifetimes.
  • Faster extraction means higher sample throughput.
  • Better sensitivity allows lower LODs.

RAVEn Diaphragm Valves

For Entech air sampling canisters

  • Easy retrofitconnect to Entech 3.2 L, 6 L, and 15 L air canisters; replace TOV and TOV-2 valves without modification!
  • Proven long lifedurable design is engineered to exceed 15,000 cycles; identical internal design to RAVE valves for Restek air canisters.
  • Leak-free performanceevery valve is helium leak tested to 1x10-6 mL/sec.
  • Effortless operationeasily finger-turn to achieve full valve closure (only 10 in-lb).
  • Enhanced damage resistanceW-type valve seats are work-hardened and wetted surfaces contain no moving parts.