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Essentials

Columns

Rtx-Biodiesel TG Columns (fused silica)

  • Linearity for all reference compounds exceeds method requirements.
  • Columns with retention gaps feature SilTite μ-Union connectors for a permanent, leak-tight connection.
  • Low column bleed at high temperatures.
  • For glycerin and glycerides analysis, according to ASTM D6584 and EN 14105 methods.
  • Stable to 380 °C.

Rtx-DHA Columns (fused silica)

Crossbond 100% dimethyl polysiloxane—optimized for hydrocarbon analysis

  • Columns meet or exceed all ASTM D6730-01 and CAN/CGSB 3.0 No. 14.3-99 method guidelines; test report for method D6730 supplied with each column.
  • Excellent responses and peak symmetry for polar oxygenates.
  • Stable to 340 °C.

Rtx-5 DHA Tuning Column (fused silica)

Crossbond 5% diphenyl/95% dimethyl polysiloxane—optimized for hydrocarbon analysis

Rtx-BAC Plus 1 Columns (fused silica)

  • Optimized column selectivities guarantee resolution of ethanol, internal standards, and frequently encountered interferences.
  • Robust and reproducible column chemistry ensures longer column lifetime and consistent results.
  • Stable to 260 °C.

Rtx-BAC Plus 2 Columns (fused silica)

  • Optimized column selectivities guarantee resolution of ethanol, internal standards, and frequently encountered interferences.
  • Robust and reproducible column chemistry ensures longer column lifetime and consistent results.
  • Stable to 260 °C.

Rxi Guard/Retention Gap Columns (fused silica)

  • Extend column lifetime.
  • Excellent inertness—obtain lower detection limits for active compounds.
  • Sharper chromatographic peaks by utilizing retention gap technology.
  • Maximum temperature: 360 °C.

Rtx-Dioxin2 Columns (fused silica)

proprietary Crossbond phase

  • Isomer specificity for 2,3,7,8-TCDD and 2,3,7,8-TCDF achieved with one GC column.
  • Thermally stable to 340 °C for longer lifetime.
  • Unique selectivity for toxic dioxin and furan congeners allows use as a confirmation GC column.

Rt-Q-BOND Columns (fused silica PLOT)

100% divinylbenzene

  • Nonpolar PLOT column incorporating 100% divinylbenzene.
  • Excellent for analysis of C1 to C3 hydrocarbons as well as isomers and alkanes up to C10.
  • High retention for CO2 simplifies gas analysis; CO2 and methane separated from O2/N2/CO. (Note: O2/N2/CO not separated at ambient temperature.)
  • Use for analysis of oxygenated compounds and solvents.
  • Maximum temperature of 300 °C.

MXT-Q-BOND Columns (Siltek-treated stainless-steel PLOT)

Advantages of metal MXT PLOT columns include:
  • Can be made in small coil diameters—perfect for tight spaces.
  • Rugged material withstands rough handling and shock.
  • Designed for robust performance in process GCs and field instruments.
  • Available in 3.5"-coil diameter or 7"-diameter, 11-pin cage.*

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.

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.

Raptor EXP Guard Column Cartridges

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no 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.
  • Guard column cartridges require EXP direct connect holder (cat.# 25808).
  • Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.

Force EXP Guard Column Cartridges

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no 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.
  • Guard column cartridges require EXP direct connect holder (cat.# 25808).
  • Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.
  • For use with 3 or 5 µm Force LC columns. For 1.8 µm Force columns, use a 0.2 µm UltraShield filter.

EXP Direct Connect Holder

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no 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.
  • Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.

EXP In-Line Holder

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no tools needed.
  • Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
  • Connects to any HPLC, UHPLC, injection, or switching valves with 1/16" stainless-steel tubing; ideal when using online trapping and preconcentration techniques.
  • EXP In-line holder requires separate guard column cartridges; available from Restek in 2.1, 3.0, and 4.6 mm.
  • Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.

Reference Standards

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.

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.

Supplies & Accessories

Ultra High Purity Regulators

Single-stage, dual-stage, and in-line gas regulators, switchover systems, protocol stations, and accessories.

Gas Generators

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

Universal "Y" Press-Tight Connectors

  • Split sample flow—perform dual-column confirmation analysis with a single injection.
  • Split column flow to two detectors.

FastPack Inlet Kits

for Agilent GCs

  • Convenient: all the parts you need in one package—no hunting for individual items.
  • Economical: costs less than the sum of the individual parts.
  • Clean: Mylar bag is factory sealed; no contamination of the products from weeks in the lab.

Finger-Tight Capillary Column Nuts

for Agilent and Thermo 1300/1310 GCs

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

Hot Swap Capillary Column Nuts

for Agilent and Thermo 1300/1310 GCs

  • No more burned fingers!
  • No more downtime waiting for injector parts to cool down.

The Claw and The Claw Holder Kit

  • Easily removes hot liners from injection ports.
  • 4 mL vials (not included) can be replaced when dirty.

Inlet Liner Removal Tool

  • Easily remove liner from injector—no more burned fingers.
  • Made from high-temperature silicone.
  • Won’t chip or crack the liner.

Autosampler Preventive Maintenance Kit

for Agilent 1100, 1200 HPLC Systems

Pump PM Kit

for Agilent 1050, 1100, 1200 HPLC Systems

Pump Maintenance Kit

for Agilent 1100, 1200 HPLC Systems

Sample Handling

Alicat Whisper Flow Calibrators

  • Quickly and precisely verify flow rates generated by vacuum or pressure before going into the field.
  • Ideal for real-time calibration of airflow controllers, passive sampling kits, air canisters, sampling pumps, and more.
  • Measure absolute pressure, mass flow, volumetric flow, and temperature of 98 different gases across a wide range of flows.
  • Choose a lab-based or convenient battery-powered portable model.

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 – 2250 cc.
  • Stated pressure ratings are at 100 °F (37 °C).
  • All cylinders have 1/4" female NPT threads on both ends.
  • TPED-compliant cylinders available for EU community.
  • Each cylinder is hydrostatically tested to at least 5/3 times the working pressure.

RAVEqc Quick-Connect Air Valves

  • Simplify your workflow—tool-free design makes it fast and easy for anyone to make consistent, quality connections.
  • Extend air canister and valve lifetime—no wrenches mean no overtightening or cross-threading damage.
  • Stand-alone or supporting roles—use alone or pair with a bellows/diaphragm valve for the ultimate in sample security and convenience.
  • Check status at a glance—if the parts are connected, the valve is open; if they’re apart, it’s closed. (Open-position valves also available.*)
  • Standard compression or tube end fittings accommodate a wide variety of air canisters and related devices.
  • Leak-free performance—each and every valve is helium leak tested to 1x10-6 mL/sec.
  • Compatible with Entech Micro-QT valves.

Note: A RAVEqc valve bracket is required for use with Restek 1, 3, 6, and 15 L air sampling canisters when using the compression fitting mounted directly on the 1/4" canister tube stub. This bracket is not needed when using Restek miniature canisters or Entech canisters.

Q-sep Multispeed Centrifuge for QuEChERS

  • Program 10 custom cycles for time, braking, and speed or g-force (up to 4500 rpm or 3450 xg).
  • QuEChERS-specific presets for AOAC and EN methods make consistent operation quick and simple.
  • Convenient lid lighting indicates at a glance if unit is ready, running, or done.
  • Control panel can be temporarily locked on one cycle for error-free reproducibility.
  • Cool-Flow design prevents samples from overheating by maintaining unit at room temperature.
  • Tube holders are carbon fiber for high strength, durability, and years of trouble-free use.
  • Clear lid permits safe observation of samples and optical calibration of speed.

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.

Resprep SLE Cartridges and 96-Well Plates

  • Faster and easier than SPE and liquid-liquid extraction: just load, wait 5 minutes, then elute.
  • Effective removal of proteins, phospholipids, and salts.
  • Quick concentration step increases sensitivity.
  • Easy to automate for high-throughput laboratories.
  • Suitable for a wide range of sample matrices and analyte pKa values.

Volume guidelines: Selecting an SLE format with sufficient loading capacity (1 mg sorbent to 1µL diluted sample) is very important because the entire sample volume (including 1:1 dilution in buffer) is absorbed into the diatomaceous earth sorbent. For example, a 100 µL sample should be diluted 1:1 with buffer for a total volume of 200 µL, which requires use of a 200 mg SLE product.

Resprep Polymeric SPE Cartridges and 96-Well Plates (Reversed Phase)

  • Silica-free, bonded polymeric material—no unwanted secondary silica interactions, even with basic compounds.
  • High surface area—higher loading capacity compared to silica-based sorbents.
  • Stable over a wide pH range (0–14)—won’t hydrolyze under extreme conditions.
  • Water-wettable—streamlined conditioning and equilibration steps drastically reduce solvent usage and sample prep time.
  • No flow-rate dependence—maintains retention and capacity after conditioning, even if dried out from vacuum or positive pressure flows.
  • Choose cartridges for high loading capacity; 96-well plates for high throughput and automation.

Resprep Quick-Replace SPE Vacuum Manifolds (12- or 24-Port)

  • Disposable, quick-replace valve liners ensure a clean flow path and eliminate cross-contamination of samples extracted on the same port.
  • Individual screw-type valves in each SPE port provide precise flow control.
  • Easily modified sample collection rack supports a wide variety of collection vessels.
  • Screw-type, solvent-resistant vacuum gauge and bleed valve offer better sealing and vacuum control.
  • Compatible with any standard male luer end SPE cartridge.

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