share:
delim
Essentials

Columns

Rxi-17Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Excellent inertness and selectivity for active environmental compounds, such as PAHs.
  • Low bleed for use with sensitive detectors, such as MS.
  • 340/360 °C upper temperature limits.
  • Equivalent to USP phase G3.

Rxi-35Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Special selectivity and excellent inertness for substituted polar compounds, such as drugs, pesticides, herbicides, PCBs, phenols, etc.
  • Provides superior separation for cannabinoids.
  • Very low-bleed phase for GC-MS analysis.
  • Extended temperature range: 50 °C up to 360 °C.

Rxi-624Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Low-bleed, high-thermal stability columnmaximum temperatures up to 300320 °C.
  • Inertexcellent peak shape for a wide range of compounds.
  • SelectiveG43 phase highly selective for volatile organics and residual solvents, great choice for USP<467>.
  • Manufactured for column-to-column reproducibilitywell suited for validated methods.

Rxi-1301Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Highest thermal stability in the industry ensures dependable, accurate MS results and increased uptime.
  • Stabilized cyano phase selectivity improves the performance of existing methods. Ideal for solvents, glycols, and other polar compounds.
  • Rigorous QC testing ensures inertness and accurate, reliable data for multiple compound classes.
  • Maximum temperature: 320 °C.

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.

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.

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.

Rtx-CLPesticides Column Kit, 0.32 mm ID

proprietary Crossbond phases

  • Application-specific columns for organochlorine pesticides and herbicides.
  • Low bleedideal for high sensitivity GC-ECD or GC-MS analyses.
  • Baseline separations in less than 10 minutes.

    Note: Columns are not preconnected in this kit.

Roc C8 HPLC Columns (USP L7)

  • Conventional HPLC column built to be the cornerstone for your lab; pressure rated for any 400 bar HPLC system.
  • Solid and reliabledelivers the peak shape, reproducibility, ruggedness, and performance you demand.
  • Exceptional value for routine analyses and large-volume workflowshigh-purity, fully porous silica backed by quality manufacturing features a variety of phases to fit most HPLC methods.
  • Ideal for a wide range of applications from food to pharma;
    5 phases cover 98% of USP methods.

Roc C18 HPLC Columns (USP L1)

  • Conventional HPLC column built to be the cornerstone for your lab; pressure rated for any 400 bar HPLC system.
  • Solid and reliable—delivers the peak shape, reproducibility, ruggedness, and performance you demand.
  • Exceptional value for routine analyses and large-volume workflows—high-purity, fully porous silica backed by quality manufacturing features a variety of phases to fit most HPLC methods.
  • Ideal for a wide range of applications from food to pharma;
    5 phases cover 98% of USP methods.

Roc Phenyl-Hexyl HPLC Columns (USP L11)

  • Conventional HPLC column built to be the cornerstone for your lab; pressure rated for any 400 bar HPLC system.
  • Solid and reliable—delivers the peak shape, reproducibility, ruggedness, and performance you demand.
  • Exceptional value for routine analyses and large-volume workflows—high-purity, fully porous silica backed by quality manufacturing features a variety of phases to fit most HPLC methods.
  • Ideal for a wide range of applications from food to pharma;
    5 phases cover 98% of USP methods.

Roc Cyano HPLC Columns (USP L10)

  • Conventional HPLC column built to be the cornerstone for your lab; pressure rated for any 400 bar HPLC system.
  • Solid and reliable—delivers the peak shape, reproducibility, ruggedness, and performance you demand.
  • Exceptional value for routine analyses and large-volume workflows—high-purity, fully porous silica backed by quality manufacturing features a variety of phases to fit most HPLC methods.
  • Ideal for a wide range of applications from food to pharma;
    5 phases cover 98% of USP methods.

Roc Silica HPLC Columns (USP L3)

  • Conventional HPLC column built to be the cornerstone for your lab; pressure rated for any 400 bar HPLC system.
  • Solid and reliable—delivers the peak shape, reproducibility, ruggedness, and performance you demand.
  • Exceptional value for routine analyses and large-volume workflows—high-purity, fully porous silica backed by quality manufacturing features a variety of phases to fit most HPLC methods.
  • Ideal for a wide range of applications from food to pharma;
    5 phases cover 98% of USP methods.

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.

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 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.
  • Connects easily to any column with Parker-style ports; not compatible with Waters columns.
  • 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.

Restek PLOT Columns

  • New bonding process minimizes particle release, reducing column blockage and protecting instrument parts.
  • More consistent flow means stable retention times in Deans and related flow switching techniques.
  • Outstanding peak symmetry improves impurity analysis for gases, solvents, and hydrocarbons.

Supplies & Accessories

Cleaned Copper Tubing

  • Use for plumbing GC systems.
  • Proprietary cleaning process used to remove residual organics.

    Note: While this tubing is ultra clean, it does not meet the requirements for oxygen service specifications (for example, CGA G – 4.1, ASTM G93-03, ASTM A380).

Rinsed and Cleaned 304 Stainless Steel Tubing

  • Use for providing carrier, fuel, make-up, or auxiliary gases to laboratory instruments.
  • Proprietary cleaning process used to remove residual organics.

    Note: While this tubing is ultra clean, it does not meet the requirements for oxygen service specifications (for example, CGA G – 4.1, ASTM G93-03, ASTM A380).

Thermolite Plus Septa

  • Usable to 350 °C inlet temperature.*
  • Ultra-low bleed minimizes background signal.
  • New plasma coating eliminates sticking in the injection port.
  • Precision molding ensures consistent, accurate fit.
  • Septa have a CenterGuide design to minimize coring. (Not available on 6 mm, 7 mm, 8 mm, 9.5 mm, 10 mm and Shimadzu plug.)
  • 5 mm septa are partially predrilled for improved puncturability.
  • Preconditioned and ready to use.
  • Packaged in ultra-clean blister packs.
  • Each batch GC-FID tested.

Capillary Ferrules for 1/16-Inch Compression-Type Fittings

Available in Vespel, graphite, or Vespel/graphite material.

Viton O-Rings

for Apex Liners

Viton O-Rings

For Agilent, PerkinElmer 590/690, Thermo 1300/1310, and Varian 1177 GCs

Fit split (6.3 mm OD) or splitless (6.5 mm OD) liners.

Viton O-Rings

for Shimadzu 17A, 2010, 2014, and 2030 GCs

Viton O-Rings

for PerkinElmer PSS Injector

Fits 4 mm OD liners.

Sample Handling

Resprep CarboPrep Plus SPE Cartridges

  • Designed specifically for the cleanup of sample extracts for organochlorine pesticides analysis.
  • Excellent alternative to Florisil products, especially for the removal of nonvolatile matrix components that contaminate GC inlets and columns.
  • Proprietary treatment renders the carbon consistent and clean, ensuring the same selectivity tube to tube, and lot to lot with no interfering background.
  • Uses the same hardware, solvents, and solvent volumes as traditional Florisil cleanup, so switching is simple.

Resprep EPH Fractionation SPE Cartridge

  • Method-specific performance for extractable petroleum hydrocarbon (EPH) analysis of soil and water samples.
  • Complete separation of aliphatic and aromatic compounds into distinct fractions.
  • Guaranteed background level under the strict reporting limits of MA and NJ EPH methods.
  • Superior lot-to-lot reproducibility and storage stability ensured by rigorous QC testing and moisture-resistant packaging.
  • Choose 5 g cartridges for higher loading capacity; use 2 g cartridges for automated systems, time-saving, and solvent reduction.

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.

Restek Domestic Customer Service

Subject

Message

Your Full Name

Your Email

Company Name

Address

Spam Block (Please leave this blank)

all fields required

Thank you

Your message has been sent. We will be in touch shortly.

Message not sent

Sorry, your message could not be sent at this time. Please try again later, or contact Restek or your local Restek representative via phone.

www.restek.com/Contact-Us