Fused Silica Capillary / GC Columns / Chromatography Columns / Restek.com
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Fused Silica Capillary

Fused Silica Capillary

Products

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.

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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.

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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.

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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.

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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.

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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.

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Rt-2560 Column (fused silica)

highly polar phase; biscyanopropyl polysiloxanenot bonded

  • Stationary phase selectivity optimized for isomer separation to ensure accurate quantification of critical cis/trans FAMEs.
  • Application-specific QC test guarantees consistent, reliable performance for AOAC 996.06 and AOCS Ce 1j-07 methods.
  • Excellent sample capacity; no peak distortion means easy, accurate peak integration.
  • Temperature range: 20–250 °C.

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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.

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Rtx-Biodiesel TG Columns (fused silica)

  • Linearity for all reference compounds exceeds method requirements.
  • Columns with retention gaps feature Alumaseal connectors to prevent leaks and extend column life.
  • Low column bleed at high temperatures.
  • For glycerin and glycerides analysis, according to ASTM D6584 and EN 14105 methods.
  • Stable to 350 °C.

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Stabilwax-DA Columns (fused silica)

polar phase; Crossbond acid-deactivated Carbowax polyethylene glycolfor acidic compounds

  • Application-specific columns for free (underivatized) acids, some inorganic acids.
  • Resistant to oxidative damage.
  • Equivalent to USP G25, G35 phases.
  • Ideal for analyzing distilled liquor and other alcoholic beverages.

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Stabilwax-DB Columns (fused silica)

polar phase; Crossbond base-deactivated Carbowax polyethylene glycolfor amines and basic compounds

  • Application-specific columns for underivatized amines and other basic compounds, including alkylamines, diamines, triamines, nitrogen-containing heterocyclics. No need for column priming.
  • Temperature range: 40 °C to 220 °C.

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Rxi Guard/Retention Gap Columns (fused silica)

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

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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.

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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.

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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.

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Rxi-PAH Columns (fused silica)

midpolarity proprietary phase

  • Ideal for EFSA PAH4 analysisseparates all priority compounds: benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene.
  • Best resolution of chrysene from interfering PAHs, triphenylene, and cyclopenta[cd]pyrene.
  • Complete separation of benzo [b], [k], [ j], and [a] fluoranthenes.
  • 360 °C thermal stability allows analysis of low-volatility dibenzo pyrenes.

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Rxi-5HT Columns (fused silica)

low-polarity phase; diphenyl dimethyl polysiloxane

  • Columns processed for high-temperature applications, such as mineral oil.
  • Temperature range: -60 to 400 °C.

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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.

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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.

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Stabilwax-MS Columns (fused silica)

  • High-polarity, stable polyethylene glycol (PEG) stationary phase.
  • Low bleed and rugged enough to withstand repeated temperature cycles without retention time shifting.
  • Ideal for food, flavor, fragrance, and industrial chemical and solvent analysis.
  • Temperature range: 40 °C to 250/260 °C.
  • Equivalent to USP G14, G15, G16, G20, and G39 phases.

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GCxGC Selectivity Kit (0.25 mm)

  • Wide range of stationary phases offers orthogonal separations.
  • High thermal stability increases system ruggedness.
  • Unrivaled column inertness for accurate analysis of active compounds.
  • 0.15, 0.18, or 0.25 mm ID formats accommodate varying sample capacities, speeds, and detectors.
  • Secondary columns come in convenient 2 m lengths for economical methods development.

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GCxGC Selectivity Kit, 0.18 mm

  • Wide range of stationary phases offers orthogonal separations.
  • High thermal stability increases system ruggedness.
  • Unrivaled column inertness for accurate analysis of active compounds.
  • 0.15, 0.18, or 0.25 mm ID formats accommodate varying sample capacities, speeds, and detectors.
  • Secondary columns come in convenient 2 m lengths for economical methods development.

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GCxGC Selectivity Kit, 0.15 mm

  • Wide range of stationary phases offers orthogonal separations.
  • High thermal stability increases system ruggedness.
  • Unrivaled column inertness for accurate analysis of active compounds.
  • 0.15, 0.18, or 0.25 mm ID formats accommodate varying sample capacities, speeds, and detectors.
  • Secondary columns come in convenient 2 m lengths for economical methods development.

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Rxi-1HT Columns (fused silica)

nonpolar phase; dimethyl polysiloxane

  • Columns processed for high-temperature applications, such as high molecular weight hydrocarbons.
  • Temperature range: -60 to 400 °C.

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Rtx-5 DHA Tuning Column (fused silica)

Crossbond 5% diphenyl/95% dimethyl polysiloxaneoptimized for hydrocarbon analysis

Rtx-1614 Columns (fused silica)

5% diphenyl, 95% dimethyl polysiloxane

  • Optimized for PBDE analysis by EPA Method 1614.
  • Short column option resolves BDE-209 3 times faster, with less thermal breakdown.
  • Unique deactivation gives higher BDE-209 response than competitor columns, for greater analytical sensitivity.
  • Exceeds EPA Method 1614 resolution criteria for BDE-49 and BDE-71.
  • Stable to 360 °C.

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Rxi-XLB Columns (fused silica)

low-polarity proprietary phase

  • General-purpose columns exhibiting extremely low bleed. Ideal for many GC-MS applications, including pesticides, PCB congeners (e.g., Aroclor mixes), PAHs.
  • Unique selectivity.
  • Temperature range: 30 °C to 360 °C.

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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.

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Rxi-17 Columns (fused silica)

midpolarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for pesticides, herbicides, rosin acids, phthalate esters, triglycerides, sterols.
  • Temperature range: 40 °C to 320 °C.

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Rtx-PCB Columns (fused silica)

proprietary Crossbond phase

  • Unique polymer for PCBs analysis by GC-ECD or GC-MS.
  • Good results for other semivolatiles.
  • Low polarity; inert to active compounds.
  • Stable to 340 °C.

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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.

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Rtx-OPPesticides2 Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for organophosphorus pesticides; best column combination for U.S. EPA Method 8141.
  • Low bleedideal for GC-FPD, GC-NPD, or GC-MS analyses.
  • Stable to 330 °C.

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Rtx-CLPesticides Column Kit, 0.25 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.

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Rtx-CLPesticides Column Kit, 0.53 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.

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Rtx-VMS Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for analyzing volatile organic pollutants by GC-MS including Methods TO-15, TMS, and EPA 8260.
  • Complete separation of U.S. EPA Method 8260 compounds in less than 10 minutes.
  • Stable to 260 °C.
  • No known equivalent phases.

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Rtx-CLPesticides2 Columns (fused silica)

proprietary Crossbond phase

  • 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.
  • Stable to 320340 °C.
  • Analyze EPA Method 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column changes.

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Rtx-CLPesticides Columns (fused silica)

proprietary Crossbond phase

  • 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.
  • Stable to 320340 °C.
  • Analyze EPA Method 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column changes.

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FAMEWAX Columns (USP G16) (fused silica)

polar phase; Crossbond polyethylene glycol

  • Application-specific columns for FAMEs, specially tested with a FAME mixture.
  • Temperature range: 20 °C to 250 °C.

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Rt-CW20M F&F Columns (fused silica)

polar phase; Carbowax polyethylene glycolnot bonded

  • Application-specific columns for flavor and fragrance compounds, specially tested.
  • True nonbonded Carbowax 20M polarity.
  • Temperature range: 60 °C to 250 °C.

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Rtx-65TG Columns (fused silica)

high-polarity phase; Crossbond diphenyl dimethyl polysiloxane

  • Application-specific columns, specially tested for triglycerides.
  • Stable to 370 °C.

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Rt-TCEP Columns (fused silica)

highly polar phase; 1,2,3-tris[2-cyanoethoxy]propanenot bonded

  • General-purpose columns, ideal for aromatics and oxygenates in gasoline.
  • Temperature range: 0 °C to 150 °C.

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Rtx-G43 Column (fused silica with 5-meter Integra-Guard guard column)

Crossbond cyanopropylmethyl phenylmethyl polysiloxane

  • Application-specific columns for residual solvents in pharmaceutical products. Meet all requirements of USP <467>.
  • Analytical column with Integra-Guard guard column eliminates connecting problems and leaks.
  • Rtx-G43 stable to 240 °C.

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Rtx-G27 Column (fused silica with 5-meter Integra-Guard guard column)

Crossbond diphenyl dimethyl polysiloxane

  • Application-specific columns for residual solvents in pharmaceutical products.
  • Analytical column with Integra-Guard guard column eliminates connecting problems and leaks.
  • Rtx-G27 stable to 290 °C.

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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.

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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.

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Rxi-XLB Secondary Columns for GCxGC (fused silica)

low polarity proprietary phase

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • General purpose columns exhibiting extremely low bleed.
  • Unique selectivity.
  • Temperature range: 30 °C to 360 °C.

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Rtx-200 Secondary Columns for GCxGC (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • General purpose column.
  • Temperature range: -20 °C to 340 °C.

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Stabilwax Secondary Columns for GCxGC (fused silica)

polar phase; Crossbond polyethylene glycol

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • Low-bleed polyethylene glycol (PEG) phase.
  • Temperature range: 40 °C to 260 °C.

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Rxi-1ms Secondary Columns for GCxGC (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • General purpose columns.
  • Temperature range: -60 °C to 330/350 °C (bleed tested temperature/maximum operating temperature).

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Rxi-5Sil MS Secondary Columns for GCxGC (fused silica)

low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • Engineered to be a low bleed GC/MS column.
  • Excellent inertness for active compounds.
  • General purpose columns.
  • Temperature range: -60 °C to 350 °C.

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Rxi-17Sil MS Secondary Columns for GCxGC (fused silica)

midpolarity Crossbond phase

  • Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses.
  • 340/360 °C upper temperature limits.
  • Excellent inertness and selectivity for active environmental compounds, such as PAHs.
  • Low-bleed for use with sensitive detectors, such as MS.

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Rtx-Volatile Amine Columns (fused silica)

  • Unique selectivity for baseline resolution of all volatile amines.
  • Excellent inertness assures accuracy and sensitivity for volatile amines, including free ammonia.
  • Highly robust phase withstands repeated water injections, resulting in longer column lifetime.
  • High temperature stability (290 °C) ensures elution of amines up to C16 and allows contaminants to be removed by “baking out” the column.

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Rtx-Mineral Oil Columns (fused silica)

  • Application specific columns meet DIN EN ISO 9377-2:2000 requirements.
  • Optimized column dimensions for fast mineral oil screening.
  • Surface linked phase guarantees long lifetime, robustness, and stability to 400 °C.

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Rtx-440 Columns (fused silica)

midpolarity proprietary Crossbond phase

  • General-purpose columns with unique selectivity for pesticides, PAHs, or other semivolatiles. Ideal for low/trace-level analyses.
  • Low-bleed, high-resolution columns with unique selectivity.
  • Wide temperature range: 20 °C to 340 °C.

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Rtx-35 Amine Columns (fused silica)

midpolarity phase; Crossbond 35% diphenyl/65% dimethyl polysiloxane

  • Application-specific columns for amines and other basic compounds, including alkylamines, diamines, triamines, ethanolamines, and nitrogen-containing heterocyclics.

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Rtx-624 Columns (fused silica)

low- to midpolarity phase

  • Application-specific columns for volatile organic pollutants. Recommended in U.S. EPA methods for volatile organic pollutants.
  • Temperature range: -20 °C to 240 °C.
  • Equivalent to USP G43 phase.

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Rtx-502.2 Columns (fused silica)

proprietary Crossbond diphenyl/dimethyl polysiloxane phase

  • Application-specific columns with unique selectivity for volatile organic pollutants. The Rtx-502.2 column is cited in U.S. EPA Method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks.
  • Excellent separation of trihalomethanes; ideal polarity for light hydrocarbons and aromatics.
  • Stable to 270 °C.

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Rtx-VRX Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for volatile organic pollutants.
  • Excellent for U.S. EPA Method 8021 compounds.
  • Stable to 260 °C.

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Rtx-OPPesticides Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for organophosphorus pesticides; best column combination for U.S. EPA Method 8141.
  • Low bleedideal for GC-FPD, GC-NPD, or GC-MS analyses.
  • Stable to 330340 °C.

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Rtx-2330 Columns (fused silica)

highly polar phase; biscyanopropyl cyanopropylphenyl polysiloxane

  • General-purpose columns for cis/trans FAMEs, dioxin isomers.
  • Temperature range: 0 °C to 275 °C.
  • Equivalent to USP G8 and G48 phase.

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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.

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Rtx-225 Columns (fused silica)

polar phase; Crossbond cyanopropylmethyl phenylmethyl polysiloxane

  • General-purpose columns for FAMEs, carbohydrates, sterols, flavor compounds.
  • Equivalent to USP G7, G19 phases.

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Rtx-65 Columns (fused silica)

mid- to high-polarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for phenols, fatty acids, triglycerides.
  • Temperature range: 50 °C to 300 °C.

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Rtx-200 Columns (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

  • General-purpose columns for solvents, Freon fluorocarbons, alcohols, ketones, silanes, glycols, and drugs of abuse. Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons, and chlorophenoxy herbicides.
  • Equivalent to USP G6 phase.

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Rtx-50 Columns (fused silica)

midpolarity phase; Crossbond phenyl methyl polysiloxane

  • General-purpose columns for pesticides, herbicides, rosin acids, phthalate esters, sterols.
  • Equivalent to USP G3 phase.

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Rtx-35 Columns (fused silica)

midpolarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for organochlorine pesticides, PCB congeners (e.g., Aroclor mixes), herbicides, pharmaceuticals, sterols, rosin acids, phthalate esters.
  • Temperature range: 40 °C to 320 °C.
  • Equivalent to USP G42 phase.

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Rtx-1701 Columns (fused silica)

midpolarity Crossbond phase

  • General-purpose columns for alcohols, oxygenates, PCB congeners (e.g., Aroclor mixes), pesticides, and fragrance compounds.
  • Equivalent to USP G46 phase.

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Rtx-1301 (G43) Columns (fused silica)

low- to midpolarity phase

  • General-purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds.
  • Equivalent to USP G43 phase.

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Rtx-20 Columns (fused silica)

low- to midpolarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for volatile compounds, flavor compounds, alcoholic beverages.
  • Temperature range: -20 °C to 320 °C.
  • Equivalent to USP G28, G32 phases.

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Rtx-5 Amine Columns (fused silica)

low-polarity phase; Crossbond 5% diphenyl/95% dimethyl polysiloxane

  • Application-specific columns for amines and other basic compounds, including alkylamines, diamines, triamines, ethanolamines, and nitrogen-containing heterocyclics.
  • Stable to 315 °C.

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Intermediate-Polarity Deactivated Guard/Retention Gap Columns/Transfer Lines (fused silica)

  • Tested with a comprehensive test mix to ensure high inertness.
  • Useful for a wide range of applications.
  • Use with most common solvents.
  • Maximum temperature: 325 °C.

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Rt-γDEXsa Columns (fused silica)

2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl gamma cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Larger organic molecules. Also useful for flavor compounds in fruit juices.

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Rt-βDEXcst Columns (fused silica)

Proprietary cyclodextrin material added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Proprietary stationary phase, developed specifically for the fragrance industry. Also used for pharmaceutical applications.

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Rt-βDEXsa Columns (fused silica)

2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Unique selectivity for esters, lactones, and other fruit flavor components.

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Rt-βDEXsp Columns (fused silica)

2,3-di-O-propyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Often useful in dual-column configurations, with the Rt-βDEXsm column, for complex enantiomeric separations.

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Rtx-Volatiles Columns (fused silica)

proprietary Crossbond diphenyl/dimethyl polysiloxane phase

  • Application-specific columns for volatile organic pollutants.
  • Stable to 280 °C.

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Rtx-2887 Column (fused silica)

nonpolar phase; Crossbond 100% dimethyl polysiloxanefor simulated distillation

  • Application-specific column for simulated distillation.
  • Stable to 360 °C.

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Rtx-200MSLow-Bleed GC-MS Columns (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

  • General purpose columns for solvents, Freon fluorocarbons, alcohols, ketones, silanes, glycols. Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons, and chlorophenoxy herbicides.
  • Equivalent to USP G6 phase.

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Rtx-5MSLow-Bleed GC-MS 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.
  • Column specifically tested for low-bleed performance.
  • Temperature range: -60 °C to 350 °C.
  • Equivalent to USP G27 and G36 phases.

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Rtx-BAC2 Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for blood alcohol analysisachieve baseline resolution in less than 3 minutes. Also excellent for abused inhalant anesthetics, γ-hydroxybutyrate (GHB)/γ-butyrolactone (GBL), glycols, and common industrial solvents.
  • Rtx-BAC2 confirmation column provides four elution order changes under the same conditions.
  • Stable to 260 °C.

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Rtx-BAC1 Columns (fused silica)

proprietary Crossbond phase

  • Application-specific columns for blood alcohol analysisachieve baseline resolution in less than 3 minutes. Also excellent for abused inhalant anesthetics, γ-hydroxybutyrate (GHB)/γ-butyrolactone (GBL), glycols, and common industrial solvents.
  • Rtx-BAC2 confirmation column provides four elution order changes under the same conditions.
  • Stable to 260 °C.

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Siltek-Deactivated Guard/Retention Gap Columns/Transfer Lines (fused silica)

  • Tested with a comprehensive test mix, to ensure high inertness.
  • Revolutionary deactivation process for superior inertness.
  • Analyze active samples accurately; ideal for chlorinated pesticide analysis (reduces endrin breakdown to less than 1%).
  • Maximum temperature: 380 °C.

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Hydroguard Water-Resistant Guard/Retention Gap Columns/Transfer Lines (fused silica)

  • Extend analytical column lifetime by preventing degradation from harsh “steam-cleaning” water injections.
  • Tested with a comprehensive test mix, to ensure high inertness.
  • Maximum temperature: 325 °C.

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Base-Deactivated Guard/Retention Gap Columns (fused silica)

  • Tested with a basic amine test mix.
  • Excellent inertness for basic compounds.
  • Recommended for use with Rtx-5 Amine, Rtx-35 Amine, Rtx-Volatile Amine, and Stabilwax-DB capillary columns.
  • Batch test chromatogram included.
  • Maximum temperature: 315 °C.

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Polar-Deactivated Guard/Retention Gap Columns (fused silica)

polar polyethylene glycol deactivation

  • Tested with a comprehensive test mix to ensure high inertness.
  • Polyethylene glycol deactivation layer provides optimum wettability for polar compounds.
  • Minimize peak splitting when using polar solvents such as methanol or water.
  • Compatible with Stabilwax, Rtx-225, and Rt-2330 capillary columns.
  • Maximum temperature: 280 °C.

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Rt-βDEXse Columns (fused silica)

2,3-di-O-ethyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Similar in performance to Rt-βDEXsm but provides better resolution for limonene, linalool, linalyl acetate, ethyl-2-methylbutyrate, 2,3-butane diol, and styrene oxides.

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Rt-βDEXsm Columns (fused silica)

2,3-di-O-methyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: Excellent column for most chiral compounds in essential oils.

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Rt-βDEXm Columns (fused silica)

permethylated beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Uses: General-purpose chiral phase with many published applications.

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Deactivated Fused Silica Tubing (Nonpolar)

  • Useful as guard columns, transfer lines, or long retention gaps
  • Inertness-tested with the Grob test mix includes test chromatogram.
  • 5-meter banded sections mounted in a Restek cage.
  • Maximum temperature: 325 °C.

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Fused Silica Tubing (Undeactivated, Untreated)

  • Strength-tested.
  • Inexpensive.
  • Coiled in 7-inch diameters, banded in 5-meter sections, and mounted in a Restek cage.

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Stx-CLPesticides Column Kit

proprietary Crossbond phases

  • Application-specific columns for organochlorine pesticides and herbicides.
  • Baseline separations in less than 10 minutes.
  • Siltek surface deactivation enhances responses for endrin, DDT, methoxychlor.
  • Stable to 330 °C.

    Note: Columns are not preconnected in this kit.

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Stx-CLPesticides Column Kit, 0.25mm ID

proprietary Crossbond phases

  • Application-specific columns for organochlorine pesticides and herbicides.
  • Baseline separations in less than 10 minutes.
  • Siltek surface deactivation enhances responses for endrin, DDT, methoxychlor.
  • Stable to 330 °C.

    Note: Columns are not preconnected in this kit.

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Stx-CLPesticides2 Columns (fused silica with Siltek deactivation)

proprietary Crossbond phase

  • Application-specific columns for organochlorine pesticides and herbicides.
  • Baseline separations in less than 10 minutes.
  • Siltek surface deactivation enhances responses for endrin, DDT, methoxychlor.
  • Stable to 330 °C.

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Stx-CLPesticides Columns (fused silica with Siltek deactivation)

proprietary Crossbond phase

  • Application-specific columns for organochlorine pesticides and herbicides.
  • Baseline separations in less than 10 minutes.
  • Siltek surface deactivation enhances responses for endrin, DDT, methoxychlor.
  • Stable to 330 °C.

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