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Fused Silica Capillary

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Rxi^®-5Sil MS Columns (fused silica) (low polarity Crossbond® silarylene phase; similar to 5% phenyl/95% dimethyl polysiloxane) Engineered to be a low bleed GC/MS column. Excellent inertness for active compounds. General purpose columns—ideal for GC/MS analysis of polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons. Temperature range: -60 °C to 350 °C. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-5ms Columns (fused silica) (low polarity phase, Crossbond® 5% diphenyl/95% 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 (bleed tested temperature/maximum operating temperature). Equivalent to USP G27 phase. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-1ms Columns (fused silica) (nonpolar phase, Crossbond® 100% dimethyl polysiloxane) General purpose columns for drugs of abuse, 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 (bleed tested temperature/maximum operating temperature). Equivalent to USP G2 phase. Click here for more information on our Rxi® columns. View Product Information
Stabilwax^® Columns (fused silica) (polar phase; Crossbond® Carbowax® polyethylene glycol) Most stable polyethylene glycol (PEG) column available. Rugged enough to withstand repeated water injections. Lowest bleed PEG column on the market; long column lifetimes are assured Temperature range: 40 °C to 260 °C. Equivalent to USP G14, G15, G16, G20, and G39 phases. View Product Information
Rxi^®-624Sil MS Columns (fused silica) (midpolarity Crossbond® silarylene phase; similar to 6% cyanopropylphenyl/94% dimethyl polysiloxane) Low bleed, high thermal stability column—maximum temperatures up to 320 °C. Inert—excellent peak shape for a wide range of compounds. Selective—highly selective for residual solvents, great choice for USP<467>. Manufactured for column-to-column reproducibility—well-suited for validated methods. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-17Sil MS Columns (fused silica) (midpolarity Crossbond® silarylene phase; similar to 50% phenyl/50% dimethyl polysiloxane) 340/360 °C upper temperature limits. Excellent inertness and selectivity for active environmental compounds, such as PAHs. Equivalent to USP phase G3. Low-bleed for use with sensitive detectors, such as MS. Excellent separation of EU-PAHs, including fluoranthenes. Click here for more information on our Rxi® columns. View Product Information
Rt^®-2560 Column (fused silica) (highly polar phase; biscyanopropyl polysiloxane—not bonded) Application-specific column for cis/trans FAMEs. Stable to 250 °C. View Product Information
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. Don't forget: The ASTM D6730 method also requires a tuning column—Rtx®-5 DHA Tuning Column View Product Information
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. Technical Article: Analyze Biodiesel Oil for Glycerin View Product Information
Stabilwax^®-DA Columns (fused silica) (polar phase; Crossbond® acid-deactivated Carbowax® polyethylene glycol—for acidic compounds) Application-specific columns for free (underivatized) acids, some inorganic acids. Resistant to oxidative damage. Temperature range: 40 °C to 250 °C. Equivalent to USP G25, G35 phases. View Product Information
Stabilwax^®-DB Columns (fused silica) (polar phase; Crossbond® base-deactivated Carbowax® polyethylene glycol—for 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. View Product Information
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. Click here for more information on our Rxi® columns. View Product Information
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. 2 minute analysis time increases lab productivity. Stable to 260 °C Don’t forget: Blood alcohol analysis requires dual column confirmation when using GC/FID. Click here for information on the secondary column for this application. View Product Information
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. 2 minute analysis time increases lab productivity. Stable to 260 °C Don’t forget: Blood alcohol analysis requires dual column confirmation when using GC/FID. Click here for information on the primary column for this application. View Product Information
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. View Product Information
Rxi^®-5HT Columns (fused silica) (low polarity phase; 5% diphenyl/95% dimethyl polysiloxane) 40% longer lifetime from specially designed fused silica tubing. Columns processed for high temperature applications. Temperature range: -60 to 400 °C. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-35Sil MS Columns (fused silica) (midpolarity phase; similar to 35% phenyl/65% dimethyl polysiloxane) Special selectivity and excellent inertness for substituted polar compounds, such as drugs, pesticides, herbicides, PCBs, phenols, etc. Very low bleed phase for GC/MS analysis. Extended temperature range: 50 °C to 340/360 °C. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-1HT Columns (fused silica) (100% dimethyl polysiloxane) Columns processed for high temperature applications. Temperature range: -60 to 400 °C. Click here for more information on our Rxi® columns. View Product Information
Rtx^®-5 DHA Tuning Column (fused silica) (Crossbond® 5% diphenyl/95% dimethyl polysiloxane—optimized for hydrocarbon analysis)
Rtx^®-1614 Columns (fused silica) (5% phenyl methyl) 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, compared to DB-5HT columns, for greater analytical sensitivity. Exceeds EPA Method 1614 resolution criteria for BDE-49 and BDE-71. View Product Information
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. Click here for more information on our Rxi® columns. View Product Information
Rtx^®-CLPesticides Column Kits (0.32mm ID) (Note: Columns are not preconnected in these kits.) Application-specific columns for organochlorine pesticides and herbicides. Low bleed—ideal for GC/ECD or GC/MS analyses. Baseline separations in less than 10 minutes. See how our Rtx®-CLPesticides columns compare to the competition at www.restek.com/RtxCLP7. View Product Information
Rxi^®-17 Columns (fused silica) (midpolarity phase; Crossbond® 50% diphenyl/50% dimethyl polysiloxane) General purpose columns for pesticides, herbicides, rosin acids, phthalate esters, triglycerides, sterols. Temperature range: 40 °C to 320 °C. Click here for more information on our Rxi® columns. View Product Information
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. View Product Information
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. View Product Information
Rtx^®-OPPesticides2 Columns (fused silica) (proprietary Crossbond® phases) Application-specific columns for organophosphorus pesticides; best column combination for US EPA Method 8141A. Low bleed—ideal for GC/FPD, GC/NPD, or GC/MS analyses. Stable to 330 °C. View Product Information
Rtx^®-CLPesticides Column Kits (0.25mm ID) (Note: Columns are not preconnected in these kits.) Application-specific columns for organochlorine pesticides and herbicides. Low bleed—ideal for GC/ECD or GC/MS analyses. Baseline separations in less than 10 minutes. See how our Rtx®-CLPesticides columns compare to the competition at www.restek.com/RtxCLP7. View Product Information
Rtx^®-CLPesticides Column Kits (0.53mm ID) (Note: Columns are not preconnected in these kits.) Application-specific columns for organochlorine pesticides and herbicides. Low bleed—ideal for GC/ECD or GC/MS analyses. Baseline separations in less than 10 minutes. See how our Rtx®-CLPesticides columns compare to the competition at www.restek.com/RtxCLP7. View Product Information
Rtx^®-VMS Columns (fused silica) (proprietary Crossbond® phase) Application-specific columns for volatile organic pollutants by GC/MS. Complete separation of US EPA Method 8260B compounds in less than 10 minutes. Stable to 260 °C. No known equivalent phases. View Product Information
Rtx^®-CLPesticides2 Columns (fused silica) (proprietary Crossbond® phases) Application-specific columns for organochlorine pesticides and herbicides. Low bleed—ideal for GC/ECD or GC/MS analyses. Baseline separations in less than 10 minutes. Stable to 340 °C. Analyze 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column change. See how our Rtx®-CLPesticides columns compare to the competition at www.restek.com/RtxCLP7. View Product Information
Rtx^®-CLPesticides Columns (fused silica) (proprietary Crossbond® phases) Application-specific columns for organochlorine pesticides and herbicides. Low bleed—ideal for GC/ECD or GC/MS analyses. Baseline separations in less than 10 minutes. Stable to 340 °C. Analyze 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column change. See how our Rtx®-CLPesticides columns compare to the competition at www.restek.com/RtxCLP7. View Product Information
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. View Product Information
Rtx^®-1 F&F Columns (fused silica) (nonpolar phase; Crossbond® 100% dimethyl polysiloxane) Application-specific columns for flavor and fragrance compounds. Stable to 350 °C. View Product Information
Stx^®-CLPesticides Column Kits (0.32mm ID) (Note: Columns are not preconnected in these kits.) 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. View Product Information
Stx^®-CLPesticides Column Kits (0.25mm ID) (Note: Columns are not preconnected in these kits.) 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. View Product Information
Stx^®-CLPesticides2 Columns (fused silica with Siltek® deactivation) (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. View Product Information
Stx^®-CLPesticides Columns (fused silica with Siltek® deactivation) (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. View Product Information
Rt^®-CW20M F&F Columns (fused silica) (polar phase; Carbowax® polyethylene glycol—not bonded) Application-specific columns for flavor and fragrance compounds, specially tested. True nonbonded Carbowax® 20M polarity. Temperature range: 60 °C to 220 °C. View Product Information
Rtx^®-65TG Columns (fused silica) (high polarity phase; Crossbond® 65% diphenyl/35% dimethyl polysiloxane) Application-specific columns, specially tested for triglycerides. Stable to 370 °C. View Product Information
Rt^®-TCEP Columns (fused silica) (highly polar phase; 1,2,3-tris[2-cyanoethoxy]propane—not bonded) General purpose columns, ideal for aromatics and oxygenates in gasoline. Temperature range: 0 °C to 135 °C. View Product Information
Rtx^®-G43 Column (fused silica with 5-meter Integra-Guard® guard column) (Crossbond® 6% cyanopropylphenyl/94% dimethyl 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. View Product Information
Rtx^®-G27 Column (fused silica with 5-meter Integra-Guard® guard column) (Crossbond® 5% diphenyl/95% dimethyl 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®-G27 stable to 290 °C. View Product Information
Rtx^®-5 Columns (fused silica) (low polarity phase; Crossbond® 5% diphenyl/95% dimethyl polysiloxane) General purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g. Aroclor mixes), essential oils, semivolatiles. Temperature range: -60 °C to 350 °C. Equivalent to USP G27 and G36 phases. View Product Information
Rtx^®-1 Columns (fused silica) (nonpolar phase; Crossbond® 100% dimethyl polysiloxane) General purpose columns for solvent impurities, PCB congeners (e.g. Aroclor mixes), simulated distillation, drugs of abuse, gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, oxygenates. Temperature range: -60 °C to 350 °C. Equivalent to USP G1, G2, G38 phases. View Product Information
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. Learn more about Restek GCxGC products. Click here for more information on our Rxi® columns. View Product Information
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. Learn more about Restek GCxGC products. View Product Information
Stabilwax^® Secondary Columns for GCxGC (fused silica) (polar phase; Crossbond® Carbowax® polyethylene glycol) Convenient 2 m length is ideal for use as a secondary column in GCxGC analyses. Most stable polyethylene glycol (PEG) phase available. Rugged enough to withstand repeated water injections. Temperature range: 40 °C to 260 °C. Learn more about Restek GCxGC products. View Product Information
Rxi^®-1ms Secondary Columns for GCxGC (fused silica) (nonpolar phase, Crossbond® 100% 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). Learn more about Restek GCxGC products. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-5Sil MS Secondary Columns for GCxGC (fused silica) (low polarity Crossbond® silarylene phase; similar to 5% phenyl/95% 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. Learn more about Restek GCxGC products. Click here for more information on our Rxi® columns. View Product Information
Rxi^®-17Sil MS Secondary Columns for GCxGC (fused silica) (midpolarity Crossbond® silarylene phase; similar to 50% phenyl/50% dimethyl polysiloxane) 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. Learn more about Restek GCxGC products. Click here for more information on our Rxi® columns. View Product Information
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. View Product Information
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. View Product Information
GCxGC Second Dimension Selectivity Kit The selectivity kit contains four columns of different selectivity for method development. Includes one each of the following: Rxi®-17, 50% diphenyl dimethylpolysiloxane Rtx®-CLPesticides, trifluoropropyl containing polymer Stabilwax®, polar polyethylene glycol Rt®-LC350, liquid crystalline phase selective for aromatic compounds View Product Information
Rt^®-LC50 Columns (fused silica) (polar, dimethyl [50% liquid crystal] polysiloxane) General purpose column with selectivity for dioxin or furan congeners, or PCB congeners. Low bleed at 270°C. Temperature range: 100°C to 270°C. View Product Information
Rt^®-PAH Columns (fused silica) (polar, proprietary liquid crystalline phase) Specially designed for the analysis of polycyclic aromatic hydrocarbons (PAHs) listed in US EPA methods 610 and 8100. Low bleed at 285°C. Temperature range: 80°C to 285°C. View Product Information
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. View Product Information
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. Stable to 220 °C. View Product Information
Rtx^®-624 Columns (fused silica) (low to midpolarity phase; Crossbond® 6% cyanopropylphenyl/94% dimethyl polysiloxane) Application-specific columns for volatile organic pollutants. Recommended in US EPA methods for volatile organic pollutants. Temperature range: -20 °C to 240 °C. Equivalent to USP G43 phase. View Product Information
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 US 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. View Product Information
Rtx^®-VRX Columns (fused silica) (proprietary Crossbond® phase) Application-specific columns for volatile organic pollutants. Excellent for US EPA Method 8021 compounds. Stable to 260 °C. View Product Information
Rtx^®-OPPesticides Columns (fused silica) (proprietary Crossbond® phases) Application-specific columns for organophosphorus pesticides; best column combination for US EPA Method 8141A. Low bleed—ideal for GC/FPD, GC/NPD, or GC/MS analyses. Stable to 330 °C. View Product Information
Rt^®-2330 Columns (fused silica) (highly polar phase; 90% biscyanopropyl/10% phenylcyanopropyl polysiloxane—not bonded) General purpose columns for cis/trans FAMEs, dioxin isomers. Temperature range: 0 °C to 275 °C. Equivalent to USP G8 and G48 phase. View Product Information
Rtx^®-Wax Columns (fused silica) (polar phase; Crossbond® Carbowax® 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. View Product Information
Rtx^®-225 Columns (fused silica) (polar phase; Crossbond® 50% cyanopropylmethyl/50% phenylmethyl polysiloxane) General purpose columns for FAMEs, carbohydrates, sterols, flavor compounds. Temperature range: 40 °C to 240 °C. Equivalent to USP G7, G19 phases. View Product Information
Rtx^®-65 Columns (fused silica) (mid to high polarity phase; Crossbond® 65% diphenyl/35% dimethyl polysiloxane) General purpose columns for phenols, fatty acids. Temperature range: 50 °C to 300 °C. Equivalent to USP G17 phase. View Product Information
Rtx^®-200 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. Temperature range: -20 °C to 340 °C. Equivalent to USP G6 phase. View Product Information
Rtx^®-50 Columns (fused silica) (midpolarity phase; Crossbond® 50% phenyl/50% methyl polysiloxane) General purpose columns for pesticides, herbicides, rosin acids, phthalate esters, triglycerides, sterols. Temperature range: 40 °C to 320 °C. Equivalent to USP G3 phase. View Product Information
Rtx^®-35 Columns (fused silica) (midpolarity phase; Crossbond® 35% diphenyl/65% 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. View Product Information
Rtx^®-1701 Columns (fused silica) (midpolarity phase; Crossbond® 14% cyanopropylphenyl/86% dimethyl polysiloxane) General purpose columns for alcohols, oxygenates, PCB congeners (e.g. Aroclor mixes), pesticides. Temperature range: -20 °C to 280 °C. Equivalent to USP G46 phase. View Product Information
Rtx^®-1301 (G43) Columns (fused silica) (low to midpolarity phase; Crossbond® 6% cyanopropylphenyl/94% dimethyl polysiloxane) General purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds. Temperature range: -20 °C to 280 °C. Equivalent to USP G43 phase. View Product Information
Rtx^®-20 Columns (fused silica) (low to midpolarity phase; Crossbond® 20% diphenyl/80% 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. View Product Information
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. View Product Information
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 View Product Information
Rt^®-γDEXsa Columns (fused silica) (2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl gamma cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: Larger organic molecules. Also useful for flavor compounds in fruit juices. View Product Information
Rt^®-βDEXcst Columns (fused silica) (Proprietary cyclodextrin material doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: Proprietary stationary phase, developed specifically for the fragrance industry. Also used for pharmaceutical applications. View Product Information
Rt^®-βDEXsa Columns (fused silica) (2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: Unique selectivity for esters, lactones, and other fruit flavor components. View Product Information
Rt^®-βDEXsp Columns (fused silica) (2,3-di-O-propyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: Often useful in dual-column configurations, with the Rt-βDEXsm column, for complex enantiomeric separations. View Product Information
Rtx^®-Volatiles Columns (fused silica) (proprietary Crossbond® diphenyl/dimethyl polysiloxane phase) Application-specific columns for volatile organic pollutants. Stable to 280 °C. View Product Information
Rtx^®-2887 Column (fused silica) (nonpolar phase; Crossbond® 100% dimethyl polysiloxane—for simulated distillation) Application-specific column for simulated distillation. Stable to 360 °C. View Product Information
Rtx^®-200MS—Low-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. Temperature range: -20 °C to 340 °C. Equivalent to USP G6 phase. View Product Information
Rtx^®-5MS—Low-bleed GC/MS Columns (fused silica) (low-polarity phase; Crossbond® 5% diphenyl/95% dimethyl polysiloxane) General purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g. Aroclor mixes), essential oils, semivolatiles. Temperature range: -60 °C to 350 °C. Equivalent to USP G27 and G36 phases. View Product Information
Rtx^®-BAC2 Columns (fused silica) (proprietary Crossbond® phase) Application-specific columns for blood alcohol analysis—achieve 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. View Product Information
Rtx^®-BAC1 Columns (fused silica) (proprietary Crossbond® phase) Application-specific columns for blood alcohol analysis—achieve 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. View Product Information
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. View Product Information
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. View Product Information
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, and Stabilwax®-DB capillary columns. Batch test chromatogram included. Maximum temperature: 315 °C. View Product Information
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. View Product Information
Rt^®-βDEXse Columns (fused silica) (2,3-di-O-ethyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin doped 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. View Product Information
Rt^®-βDEXsm Columns (fused silica) (2,3-di-O-methyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: Excellent column for most chiral compounds in essential oils. View Product Information
Rt^®-βDEXm Columns (fused silica) (permethylated beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane) Uses: General purpose chiral phase with many published applications. View Product Information
Rtx^®-Dioxin Columns (fused silica) (proprietary Crossbond® phase) Replacement column for 5% diphenyl phases. Improved separations of dioxin or furan congeners. Greater thermal stability than 5% diphenyl phases or high-cyano confirmation columns. View Product Information
Essential Oils Chiral Column Kits (fused silica) Rugged, highly stable columns. Extended column lifetime. Kit includes: Rt®-βDEXsm column, Rt®-βDEXse column, Rt®-βDEXsa column, & Rt®-βDEXsp column View Product Information
Juices Chiral Column Kits (fused silica) Rugged, highly stable columns. Extended column lifetime. Kit includes: Rt®-βDEXse column, Rt®-βDEXsm column & Rt®-γDEXsa column View Product Information
Environmental Chiral Column Kits (fused silica) Rugged, highly stable columns. Extended column lifetime. Kit includes: Rt®-βDEXcst column & Rt®-βDEXsm column View Product Information
Pharmaceutical Chiral Column Kits (fused silica) Rugged, highly stable columns. Extended column lifetime. Kit includes: Rt®-βDEXcst column & Rt®-βDEXsm column View Product Information
Fused Silica Tubing (Non-Polar Dimethyl Deactivated, Untreated) 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. Coat your own columns and save money. View Product Information
Fused Silica Tubing (Undeactivated, Untreated) Strength-tested. Inexpensive. Coiled in 7-inch diameters, banded in 5-meter sections, and mounted in a Restek cage. View Product Information

Fused Silica Capillary

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(low polarity Crossbond® silarylene phase; similar to 5% phenyl/95% dimethyl polysiloxane)

(low polarity phase, Crossbond® 5% diphenyl/95% dimethyl polysiloxane)

(nonpolar phase, Crossbond® 100% dimethyl polysiloxane)

(polar phase; Crossbond® Carbowax® polyethylene glycol)

(midpolarity Crossbond® silarylene phase; similar to 6% cyanopropylphenyl/94% dimethyl polysiloxane)

(midpolarity Crossbond® silarylene phase; similar to 50% phenyl/50% dimethyl polysiloxane)

(highly polar phase; biscyanopropyl polysiloxane—not bonded)

(Crossbond® 100% dimethyl polysiloxane—optimized for hydrocarbon analysis)

(polar phase; Crossbond® acid-deactivated Carbowax® polyethylene glycol—for acidic compounds)

(polar phase; Crossbond® base-deactivated Carbowax® polyethylene glycol—for amines and basic compounds)

Get the protection without the connection!

(low polarity phase; 5% diphenyl/95% dimethyl polysiloxane)

(midpolarity phase; similar to 35% phenyl/65% dimethyl polysiloxane)

(100% dimethyl polysiloxane)

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

(5% phenyl methyl)

(low polarity proprietary phase)

(Note: Columns are not preconnected in these kits.)

(midpolarity phase; Crossbond® 50% diphenyl/50% dimethyl polysiloxane)

(proprietary Crossbond® phase)

(proprietary Crossbond® phase)

(proprietary Crossbond® phases)

(Note: Columns are not preconnected in these kits.)

(Note: Columns are not preconnected in these kits.)

(proprietary Crossbond® phase)

(proprietary Crossbond® phases)

(proprietary Crossbond® phases)

(polar phase; Crossbond® polyethylene glycol)

(nonpolar phase; Crossbond® 100% dimethyl polysiloxane)

(Note: Columns are not preconnected in these kits.)

(Note: Columns are not preconnected in these kits.)

(proprietary Crossbond® phases)

(proprietary Crossbond® phases)

(polar phase; Carbowax® polyethylene glycol—not bonded)

(high polarity phase; Crossbond® 65% diphenyl/35% dimethyl polysiloxane)

(highly polar phase; 1,2,3-tris[2-cyanoethoxy]propane—not bonded)

(Crossbond® 6% cyanopropylphenyl/94% dimethyl polysiloxane)

(Crossbond® 5% diphenyl/95% dimethyl polysiloxane)

(low polarity phase; Crossbond® 5% diphenyl/95% dimethyl polysiloxane)

(nonpolar phase; Crossbond® 100% dimethyl polysiloxane)

(low polarity proprietary phase)

(midpolarity phase; Crossbond® trifluoropropylmethyl polysiloxane)

(polar phase; Crossbond® Carbowax® polyethylene glycol)

(nonpolar phase, Crossbond® 100% dimethyl polysiloxane)

(low polarity Crossbond® silarylene phase; similar to 5% phenyl/95% dimethyl polysiloxane)

(midpolarity Crossbond® silarylene phase; similar to 50% phenyl/50% dimethyl polysiloxane)

(polar, dimethyl [50% liquid crystal] polysiloxane)

(polar, proprietary liquid crystalline phase)

(midpolarity proprietary Crossbond® phase)

(midpolarity phase; Crossbond® 35% diphenyl/65% dimethyl polysiloxane)

(low to midpolarity phase; Crossbond® 6% cyanopropylphenyl/94% dimethyl polysiloxane)

(proprietary Crossbond® diphenyl/dimethyl polysiloxane phase)

(proprietary Crossbond® phase)

(proprietary Crossbond® phases)

(highly polar phase; 90% biscyanopropyl/10% phenylcyanopropyl polysiloxane—not bonded)

(polar phase; Crossbond® Carbowax® polyethylene glycol)

(polar phase; Crossbond® 50% cyanopropylmethyl/50% phenylmethyl polysiloxane)

(mid to high polarity phase; Crossbond® 65% diphenyl/35% dimethyl polysiloxane)

(midpolarity phase; Crossbond® trifluoropropylmethyl polysiloxane)

(midpolarity phase; Crossbond® 50% phenyl/50% methyl polysiloxane)

(midpolarity phase; Crossbond® 35% diphenyl/65% dimethyl polysiloxane)

(midpolarity phase; Crossbond® 14% cyanopropylphenyl/86% dimethyl polysiloxane)

(low to midpolarity phase; Crossbond® 6% cyanopropylphenyl/94% dimethyl polysiloxane)

(low to midpolarity phase; Crossbond® 20% diphenyl/80% dimethyl polysiloxane)

(low polarity phase; Crossbond® 5% diphenyl/95% dimethyl polysiloxane)

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

(Proprietary cyclodextrin material doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)

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

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

(proprietary Crossbond® diphenyl/dimethyl polysiloxane phase)