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Essentials

Columns

Innovative Integra-Guard Columns

Get the protection without the connection!

  • These innovative columns incorporate both guard column and analytical column in a continuous length of tubing, eliminating the connection and all connection-associated problems!
  • The guard column section is marked separately from the analytical column, using high-temperature string.
  • A wide variety of our Integra-Guard capillary columns are available.

MXT-1HT SimDist Column (Siltek-treated stainless steel)

nonpolar phase

  • Lowest bleed for longest column lifetime.
  • Reliably meets all ASTM D2887, D6352, D7169, D7213, and D7500 specifications.
  • 100% dimethyl polysiloxane phase allows easy comparisons to historical data.
  • Individually tested for guaranteed performance.
  • 7" coil diameter.
  • Temperature range: -60450 °C.*

    *Maximum temperature varies by cat.#; see column-specific temperatures.

Rtx-DHA Columns (fused silica)

Crossbond 100% dimethyl polysiloxaneoptimized 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 polysiloxaneoptimized for hydrocarbon analysis

Rxi-1ms Columns (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

  • General-purpose columns for arson accelerants, essential oils, hydrocarbons, pesticides, PCB congeners (e.g., Aroclor mixes), sulfur compounds, amines, solvent impurities, simulated distillation, oxygenates, gasoline range organics (GRO), refinery gases.
  • Tested and guaranteed for ultra-low bleed; improved signal-to-noise ratio for better sensitivity and mass spectral integrity.
  • Temperature range: -60 °C to 330/350 °C.
  • Equivalent to USP G1, G2, and G38 phases.

Rtx-1 Columns (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

  • General-purpose columns for solvent impurities, PCB congeners (e.g., Aroclor mixes), simulated distillation, arson accelerants, gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, oxygenates.
  • Long lifetime and very low bleed at high operating temperatures.
  • Equivalent to USP G1, G2, G38 phases.

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 columnsideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons.
  • Temperature range: -60 °C to 350 °C.

Stabilwax Columns (fused silica)

polar phase; Crossbond polyethylene glycol

  • Low-bleed PEG column ensures long column lifetimes.
  • Temperature range: 40 °C to 260 °C.
  • Equivalent to USP G14, G15, G16, G20, and G39 phases.

Rtx-Wax Columns (fused silica)

polar phase; Crossbond polyethylene glycol

  • Best polyethylene glycol (PEG) phase for alkenols, glycols, and aldehydes.
  • Temperature range: 20 °C to 250 °C.
  • Equivalent to USP G14, G15, G16, G20, G39 phases.

Rxi-5ms Columns (fused silica)

low-polarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for semivolatiles, phenols, amines, residual solvents, drugs of abuse, pesticides, PCB congeners (e.g., Aroclor mixes), solvent impurities.
  • Most inert column on the market.
  • Tested and guaranteed for ultra-low bleed; improved signal-to-noise ratio for better sensitivity and mass spectral integrity.
  • Temperature range: -60 °C to 330/350 °C.
  • Equivalent to USP G27 and G36 phases.

Rtx-5 (G27) Columns (fused silica)

low-polarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, semivolatiles.
  • Equivalent to USP G27 and G36 phases.

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.

Allure Silica Column for MOSH/MOAH Analysis

Particle: 5 µm, spherical
Pore Size: 60 Å
Carbon Load: n/a
End-cap: n/a
Surface Area: 450 m2/g
pH Range: 2.5 to 8
Maximum Temperature: 80 °C

Highly retentive phase for normal phase separations. Very high surface area, Type B silica packing.

Ideal for MOSH/MOAH analysis by EN 16995. For compatibility with Axel Semrau and other automated systems, add the Level 3 Trident column protection system and Allure Silica guard cartridge listed in Related Products.

Allure Organic Acids Columns

Particle: 5 µm, spherical
Pore Size: 60 Å
Carbon Load: proprietary
End-Cap: no
Surface Area: 450 m2/g
pH Range: 2.5 to 8
Maximum Temperature: 80 °C

Reference Standards

Polywax Standards

Supports ASTM Methods D2887, D6352, D7169, D7398, and D7500.

These high molecular weight hydrocarbon waxes are useful for simulated distillation and other high-temperature GC work.

Oxy SetUp Blend (29 components)

ASTM Method D6730-01 is specifically designed for the determination of the individual hydrocarbons present in spark ignition fuels, as well as fuel blends containing oxygenates such as methyl tert-butyl ether, ethyl tert-butyl ether, tert-butanol, ethanol, etc.

Gravimetrically prepared and NIST-traceable.

DHA Paraffins Standard (11 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitability—while fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA Isoparaffins Standard (33 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitability—while fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA Olefins Standard (26 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitability—while fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA Naphthenes Standard (26 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitability—while fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA Aromatics Standard (37 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitability—while fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA PiONA Standard (133 components)

This standard is produced for refineries performing Detailed Hydrocarbon Analysis (DHA) of crude oil feedstocks and fuels. It helps with calibrating complex hydrocarbon analyses and provides the greatest number of gravimetrically determined values for qualitative calibration to help our customers optimize production and maximize profitabilitywhile fulfilling requirements such as ASTM Methods D6729, D6730, and D6733.

DHA PONA Standard (188 components)

This standard is a qualitative mixture of various gasoline and refinery materials prepared to provide nearly every component that may be encountered in feedstock and finished gasolines. Some oxygenates have been added to allow this blend to be used by refineries for Detailed Hydrocarbon Analysis (DHA) method setup and to fulfill requirements such as ASTM Methods D6729, D6730, and D6733.

Cannabis Standards

Comprehensive suite of certified reference materials developed specifically
for cannabis analysis.

Supplies & Accessories

EZ No-Vent GC Column-Mass Spectrometer Connector

for Agilent GCs with 5971/5972, 5973, 5975, or 5977 GC-MS

  • Change GC-MS columns in minutes without venting100 µm transfer line maintains vacuum and eliminates the need to vent.
  • Easy to install and maintainno special tools or plumbing required.
  • Gold-plated body for inertness.
  • High-temperature polyimide ferrules eliminate leaks at the problematic transfer line fitting.
  • Lower cost than other "no-vent" fittings.

EZ No-Vent GC Column-Mass Spectrometer Connector

for Bruker/Varian Saturn 2000 Series Mass Spectrometers

  • Change GC-MS columns in minutes without venting100 µm transfer line maintains vacuum and prevents venting.
  • Easy to install and maintainno special tools or plumbing required.
  • Gold-plated body for inertness.
  • High-temperature polyimide ferrules eliminate leaks at the problematic transfer line fitting.
  • Lower cost than other "no-vent" fittings.

EZ No-Vent GC Column-Mass Spectrometer Connector

for Shimadzu QP 2010 & QP 2010 Plus

  • Change GC-MS columns in minutes without venting100µm transfer line maintains vacuum and eliminates the need to vent.
  • Easy to install and maintainno special tools or plumbing required.
  • Gold-plated body for inertness.
  • High-temperature aluminum ferrules eliminate leaks at the transfer line fitting.
  • Lower cost than other "no-vent" fittings.
  • Can be used on Shimadzu QP 2010 and QP 2010 Plus mass spectrometers.

EZ No-Vent GC Column-Mass Spectrometer Connector

for Thermo Scientific Focus DSQ GC Mass Spectrometers

  • Change GC-MS columns in minutes without venting100 µm transfer line maintains vacuum and prevents venting.
  • Easy to install and maintainno special tools or plumbing required.
  • Gold-plated body for inertness.
  • High-temperature polyimide ferrules eliminate leaks at the problematic transfer line fitting.
  • Lower cost than other "no-vent" fittings.

EZ Twist Top Split/Splitless Injection Port

for Agilent 6850/6890/7820 GCs with Large Canister-Type Filter

  • Change inlet liners faster and easier.
  • Gas lines are attached to shell weldment bottom to help eliminate broken gas lines.
  • Gas lines don't interfere with routine maintenance.
  • Weldment Removal Tool allows for quick removal of the hot weldment without fingers ever touching hot surfaces.
  • Weldment stays secure in the tool for reattachment.

EZ Twist Top Split/Splitless Injection Port

for Agilent 6850/6890/7820 GCs with Pencil Traps

  • Change inlet liners faster and easier.
  • Gas lines are attached to shell weldment bottom to help eliminate broken gas lines.
  • Gas lines don't interfere with routine maintenance.
  • Weldment Removal Tool allows for quick removal of the hot weldment without fingers ever touching hot surfaces.
  • Weldment stays secure in the tool for reattachment.

EZ Twist Top Split/Splitless Injection Port

for Agilent 7890 GCs

  • Change inlet liners faster and easier.
  • Gas lines are attached to shell weldment bottom to help eliminate broken gas lines.
  • Gas lines don't interfere with routine maintenance.
  • Weldment removal tool allows for quick removal of the hot weldment without fingers ever touching hot surfaces.
  • Weldment stays secure in the tool for reattachment.

    The shell weldment is designed for "drop in" installation!

EZ Twist Top Split/Splitless Injection Port

for Agilent 5890 GCs

  • Change inlet liners faster and easier.
  • Gas lines are attached to shell weldment bottom to help eliminate broken gas lines.
  • Gas lines don't interfere with routine maintenance.
  • Weldment Removal Tool allows for quick removal of the hot weldment without fingers ever touching hot surfaces.
  • Weldment stays secure in the tool for reattachment.

Weldment Removal Tool for EZ Twist Top Split/Splitless Injection Ports

for Agilent GCs

  • Weldment removal tool allows for quick removal of the hot weldment without fingers ever touching hot surfaces.
  • Weldment stays secure in the tool for reattachment.

Interlock Vials

Interlock limited volume vials offer the performance and convenience of a one-piece microvial for a fraction of the cost. A 300 µL insert is fused into a 12 x 32 mm clear or amber glass vial. This one-piece design reduces the potential for contamination.

Make Life Easier (MLE) Capillary Tool Kit

for Agilent GCs

Everything you need in one complete kit!

Make Life Easier (MLE) Capillary Tool Kit

for Shimadzu GCs

Everything you need in one complete kit!

Make Life Easier (MLE) Capillary Tool Kit

for Thermo Scientific GCs

Everything you need in one complete kit!

Make Life Easier (MLE) Capillary Tool Kit

for Bruker/Varian GCs

Everything you need in one complete kit!

Make Life Easier (MLE) Capillary Tool Kit

for PerkinElmer GCs

Everything you need in one complete kit!

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.

Mobi-Cap GL-45 Bottle Top Kits

  • Convenient kits for easy mobile phase management.
  • Protect your mobile phase from evaporation and contamination, and your lab from harmful vapors.
  • Includes one 3-port Mobi-Cap GL-45 bottle top (cat.# 27836).
  • Includes PTFE tubing 1/8" OD x 0.063 mm ID x 3 m (cat.# 27846).
  • Includes two 1/16" connection sparger filters: one 2 μm (cat.# 27827) and one 10 μm (cat.# 27828).
  • Available with or without safety-coated GL-45 bottle(s).
  • Use one 1/4-28 threaded port for exhaust filter or air inlet valve; other ports can be used as needed or closed with 1/4-28 plug (sold separately).

Mobi-Cap GL-45 Bottle Tops

  • Protect your mobile phase from evaporation and contamination, and your lab from harmful vapors.
  • Includes tubing connector nuts with color-sleeve adaptors and ferrules.
  • Use one 1/4-28 threaded port for exhaust filter or air inlet valve; other ports can be used as needed or closed with 1/4-28 plug (sold separately).

Eco-Cap GL-45 Bottle Tops

  • Economically protect your mobile phase from evaporation and contamination, and your lab from harmful vapors.
  • Order Hub-Cap adaptor (cat.# 26538) to allow use of Eco-Cap on 4-liter bottles.
  • Includes polypropylene male Luer plug.
  • No threading for fittings on the inside of the tubing ports; tubing is just inserted.

Hub-Cap 4-Liter Bottle Tops

Hub-Cap bottle tops are a great way to neatly keep your mobile phase lines where they belong. Use them instead of plastic paraffin film, aluminum foil, or tape on your mobile phase reservoirs.

Bottle Top Valves and Filters

  • Inlet valves protect your lab from volatile compounds; use with a filter to protect your mobile phase from bacterial contamination.
  • Outlet valve regulates pressure during helium sparging.
  • 1/4-28 threads for use on Mobi-Cap or Hub-Cap bottle tops.
  • Replace valves every 6 months and filters every 3 months; more frequently with rigorous use or use in harsh environments.

Mobile Phase Sparge Filters

  • Inexpensively prepare and maintain mobile phases free of dissolved oxygen, nitrogen, and other atmospheric gases.
  • Choose flangeless connector for either 1/16" or 1/8" OD tubing.
  • Filter elements available in 316 stainless steel or metal-free polyethylene (PE).
  • Connector made of PEEK, flangeless connector ferrule of ETFE (not in flow path).

Safety Exhaust Filter with Indicator

  • Breakthrough indicator changes from light pink to dark pink to notify you when to change filter.
  • Safety filter protects your lab from volatile compounds in waste bottles.
  • 1/4-28 threads for use on Mobi-Cap or Hub-Cap bottle tops.
  • Replace filter every 3 months or when indicator changes color; more frequently with rigorous use or use in harsh environments.

Universal 10-32 PEEK Column Connectors and Plugs

Universal PEEK connectors allow easy installation of all 1/16" tubing, including stainless steel, up to 5,000 psi (350 bar).

Standard Microliter Syringes (Hamilton)

for Agilent 7673, 7683, 7693A, and 6850 Autosamplers

  • Hamilton syringes are designed and tested to meet critical autosampler performance needs.
  • Needle point styles are designed to withstand multiple, rapid injections through a septum.

    Note: Syringes and needles sold by Restek are intended for scientific research and laboratory use only and are not intended for human in vivo or animal use.

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 EN15662.

2.0 mL, 9 mm Short-Cap, Screw-Thread Vials (vial only)

Fit all 2.0 mL, 12 x 32 mm, crimp-top vial-based autosamplers.

Sample Handling

radiello Passive Diffusive Air Samplers

  • Unique 3D radial design is not prone to face velocity effects and delivers higher uptake rates than standard 2D flat axial devices.
  • Higher uptake rates give excellent low-level sensitivity, even for short sampling periods (down to 15 min).
  • Higher capacity allows you to sample accurately up to 30 days without bias from breakthrough or back diffusion.
  • Versatile, easy-to-use air sampler for a wide range of chemical classes is ideal for environmental monitoring, vapor intrusion, industrial hygiene, and personal air sampling.
  • Solvent and thermal desorption options available.
  • Features water repellant diffusive body and reusable holders.
  • Easy to use—no pump required.

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.
  • Standalone 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.
  • 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 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.

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.

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