D3606 Application Column - 2 column set (Packed) •Complete separation of ethanol and benzene, with a resolution value > 3.00. •Accurate quantification of benzene and toluene. •Fully conditioned two column set—ready to use out of the box. •Listed in the appendix of ASTM Method D3606 as an acceptable alternative to TCEP columns—get better separation of benzene and ethanol while still following ASTM method requirements. Conforms to the specifications established in ASTM method D3606-10 for the quantitation of benzene and toluene in spark ignition fuel containing ethanol. **The column set is designed to accommodate both valve injection and/or syringe injection. Column 1 is configured with a 2″ inlet void to facilitate on-column injection. The inlet is identified on both column 1 and column 2. Note: The inlet of column 2 is identified for proper orientation for connection to the valve. Beinhaltet: Column 1: 6′ (1.8 m), 1/8″ OD, 2.0 mm ID, nonpolar Rtx-1, Column 2: 16′ (4.9 m), 1/8″ OD, 2.0 mm ID, proprietary packing material
Innovative Integra-Guard® Columns Get the protection without the connection! • No leaks for a more robust method. • No column connections for easier, faster maintenance. • No peak distortions due to connector dead volume and thermal capacity. These innovative columns incorporate both a guard column and an 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.
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.
(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. Active basic compounds that otherwise require derivatization, or an alternative analytical technique, can be analyzed on an Rtx®-35 Amine column. The tubing surface is chemically altered to reduce tailing of basic compounds, eliminating the need for column priming. An Rtx®-35 Amine column is ideal for analyzing a wide variety of basic compounds, but breakthrough technology also allows the analysis of neutral compounds and adsorptive compounds with oxygen groups susceptible to hydrogen bonding. Every Rtx®-35 Amine column is tested to ensure that it meets the requirements for analyzing ppm levels of amines, without priming, and to ensure low bleed at maximum operating temperature.
CarboBlack Packed Columns (On CarboBlack B) Graphitized carbon black offers unique selectivity and very little adsorption for alcohol analyses. Two types of CarboBlack supports are available, CarboBlack B and CarboBlack C. CarboBlack B support, with its higher surface area, can hold up to a 10% loading of a nonsilicone liquid phase. CarboBlack C support can hold up to a 1% loading of a nonsilicone liquid phase. Many Carbowax® 20M-loaded CarboBlack packings are available. CarboBlack packings are treated with KOH or picric acid for basic or acidic compounds, and special alcoholic beverage loadings are available. CarboBlack supports provide resolution and retention similar to Carbopack™ and Carbograph supports. **Siltek treated stainless steel.
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.
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. The Rtx®-Mineral Oil stationary phase and column dimensions were optimized for the fast screening of mineral oils in extracts from solids and water samples according to DIN EN ISO 9377-2:2000. The 0.10 μm column is the gold standard for the method, whereas the 0.15 μm column provides more complete separation of C10 from the solvent peak when large injection volumes are used. Compared with common industry solutions, the unique surface bonding of the Rtx®-Mineral Oil column ensures long column lifetime, even at higher temperatures. These unique columns can be used at temperatures ranging from 380 °C (isothermal) to 400 °C (programmable), and each column is tested individually for bleed to ensure exceptional performance at these extreme conditions.
Rtx-5 DHA Tuning Column 5m, 0.25mm, 1.0um
Innovative Integra-Guard® Columns Get the protection without the connection! • No leaks for a more robust method. • No column connections for easier, faster maintenance. • No peak distortions due to connector dead volume and thermal capacity. These innovative columns incorporate both a guard column and an 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.
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. The Rtx®-65 phase contains the highest phenyl content of any bonded stationary phase available to improve separation of aromatic compounds through increased phase-analyte interaction. A unique polarity makes these columns ideal for a variety of analyses, from phenols to FAMEs. As a confirmation column for EPA Method 604 phenols, an Rtx®-65 column produces a different elution order compared to the primary Rtx®-5 column. Rtx®-65 columns elute FAMEs according to equivalent chain length, similar to bonded Carbowax® columns, but the Rtx®-65 phase does not suffer the thermal stability limitations of other polar stationary phases.
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.
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 260 °C. • Equivalent to USP G25, G35 phases. Stabilwax®-DA bonded polyethylene glycol has an acidic functionality incorporated into the polymer structure. This permits analysis of acidic compounds without derivatization, significantly reduces adsorption of acids, and increases sample capacity for volatile free acids. Stabilwax®-DA columns last longer and give better peak shapes for high molecular weight acids. Some inorganic acids also chromatograph well on a Stabilwax®-DA column; the limitation is the volatility of the acidic compound.
Rtx®-CLPesticides2 Columns (fused silica) (proprietary Crossbond® phases). • Application-specific columns for organochlorine pesticides and herbicides. • Low bleed—ideal for high sensitivity GC-ECD or GC-MS analyses. • Baseline separations in less than 10 minutes. • Stable to 340 °C. • Analyze EPA Method 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column changes.
Micropacked GC Columns • Increased efficiency over traditional packed columns. • Higher capacity than PLOT columns. • Made from inert, flexible Siltek®-treated stainless steel tubing. • Siltek®-treated, braided-wire end plug keeps packing intact, even under intense pressure surges during valve switching. • Wide range of packings available. Efficient, Inert, and Flexible Micropacked columns are highly efficient and provide good sample capacity. With inert Siltek® treatment, micropacked columns are a powerful tool for solving many difficult application problems. The unsurpassed inertness of SilcoSmooth® tubing is based on Siltek® deactivation, which allows the column to be flexed and coiled without any fear of chipping or cracking the inert surface. Easy to Install—Multiple Internal Diameters Our micropacked columns are designed to fit packed and capillary injection systems. Standard wall (1/16-inch OD) micropacked columns offer improved efficiency in packed column instruments without the expense of converting to capillary injection systems. Smaller OD (0.95 mm OD) micropacked columns install easily into a capillary injector, using slightly larger ferrules. Micropacked columns operate at flows exceeding 10 cc/min for trouble-free operation. Braided Wire End Plugs Glass wool end plugs can be dislodged easily by carrier gas pressure surges. Restek’s chemists insert braided wire into the column and secure it by making a small crimp near the column outlet. End plugs are Siltek® treated—the sample contacts only inert surfaces.
Rt®-Q-BOND Columns (fused silica PLOT) 100% divinylbenzene • Nonpolar PLOT column incorporating 100% divinylbenzene. • Excellent for analysis of C1 to C3 isomers and alkanes up to C12. • High retention for CO2 simplifies gas analysis; CO2 and methane separated from O2/N2/CO. (Note: O2/N2/CO not separated at room temperature.) • Use for analysis of oxygenated compounds and solvents. • Maximum temperature of 300 °C.
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.
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.
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-50 Columns (fused silica) midpolarity phase; Crossbond phenyl methyl polysiloxane • General-purpose columns for pesticides, herbicides, and phthalate esters. • Equivalent to USP G3 phase. • Temperature range: 40 °C to 330 °C.
Molecular Sieve Columns (packed) Molecular sieve packed columns easily separate permanent gases at above-ambient temperatures. Restek's R&D chemists have developed a process for preparing molecular sieve packings, which result in excellent batch-to-batch reproducibility. In addition, our molecular sieves are preactivated and ready to use. Each column comes with metal endfittings to prevent water or carbon dioxide from adsorbing into the packing during shipment.
ShinCarbon ST Packed Columns •Separate permanent gases, including CO/CO2, without cryogenic cooling. •Rapid separations of permanent gas/light hydrocarbon mixtures. •Excellent compatibility with most GC detectors—minimal bleed, minimal baseline rise. •Preconditioned, less than 30 minutes to stabilize. •Maximum temperature of 280 °C/300 °C.
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. Temp. limits 40 to 230 °C
Micropacked GC Columns • Increased efficiency over traditional packed columns. • Higher capacity than PLOT columns. • Made from inert, flexible Siltek®-treated stainless steel tubing. • Siltek®-treated, braided-wire end plug keeps packing intact, even under intense pressure surges during valve switching. • Wide range of packings available. Efficient, Inert, and Flexible Micropacked columns are highly efficient and provide good sample capacity. With inert Siltek® treatment, micropacked columns are a powerful tool for solving many difficult application problems. The unsurpassed inertness of SilcoSmooth® tubing is based on Siltek® deactivation, which allows the column to be flexed and coiled without any fear of chipping or cracking the inert surface. Easy to Install—Multiple Internal Diameters Our micropacked columns are designed to fit packed and capillary injection systems. Standard wall (1/16-inch OD) micropacked columns offer improved efficiency in packed column instruments without the expense of converting to capillary injection systems. Smaller OD (0.95 mm OD) micropacked columns install easily into a capillary injector, using slightly larger ferrules. Micropacked columns operate at flows exceeding 10 cc/min for trouble-free operation. Braided Wire End Plugs Glass wool end plugs can be dislodged easily by carrier gas pressure surges. Restek’s chemists insert braided wire into the column and secure it by making a small crimp near the column outlet. End plugs are Siltek® treated—the sample contacts only inert surfaces.
MXT-Alumina BOND/MAPD Columns (Siltek-treated stainless-steel PLOT) • Optimized deactivation produces maximum response when analyzing trace levels of acetylene, methyl acetylene, and propadiene. • Stable response factors make this column ideal for process-type applications where recalibration must be minimized. • High loadability reduces peak tailing and improves separations. • Extended temperature range up to 250 °C for fast elution of high molecular weight (HMW) hydrocarbons and accelerated column regeneration following exposure to water. • Temperature range: -60 to 250 °C. MXT-Alumina BOND/MAPD PLOT columns are made specifically for the analysis of petrochemicals and downstream products such as ethylene, propylene, butylenes, and butadiene!
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.
General-purpose columns are ideal for GC/MS analysis of chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons. •Excellent inertness •General-purpose columns •Ideal for applications requiring high sensitivity •Temperature range: –60 to 330/350 °C (–76 to 626/662 °F) Columns exhibit excellent inertness for active compounds. Columns incorporate phenyl rings in the polymer backbone, improving thermal stability, reducing bleed, and making the phase less prone to oxidation. Ideal for GC/MS applications requiring high sensitivity, including use in ion trap systems.
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 260 °C. • Equivalent to USP G25, G35 phases. Stabilwax®-DA bonded polyethylene glycol has an acidic functionality incorporated into the polymer structure. This permits analysis of acidic compounds without derivatization, significantly reduces adsorption of acids, and increases sample capacity for volatile free acids. Stabilwax®-DA columns last longer and give better peak shapes for high molecular weight acids. Some inorganic acids also chromatograph well on a Stabilwax®-DA column; the limitation is the volatility of the acidic compound.
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. Rtx®-Wax columns are the most inert and efficient PEG columns currently available. The extended operating temperature range allows analysis of compounds having a wide volatility range and ensures low bleed at temperatures as high as 250 °C. Selectivity is comparable to other Carbowax® columns for compounds of intermediate to high polarity
MXT®-1HT SimDist Column (Siltek®-treated stainless steel) (nonpolar phases) • Stable up to 450 °C—lowest bleed for longest column lifetime. • Reliably meets all ASTM D6352, D7169, and D7500 specifications. • 100% dimethyl polysiloxane phase allows easy comparisons to historical data. • Individually tested for guaranteed performance. • 7" coil diameter. Accurate boiling point determination for medium and heavy fractions using GC simulated distillation requires columns and phase polymers that are robust enough to withstand high temperatures without significant degradation.
Rtx-Volatiles Columns (fused silica) proprietary Crossbond diphenyl/dimethyl polysiloxane phase • Application-specific columns for volatile organic compounds. • Can be used for alcohols and solvents. • Temperature range: -20 °C to 280 °C.
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.
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.
Rt-U-BOND Columns (fused silica PLOT) divinylbenzene ethylene glycol/dimethylacrylate • Restek's highest polarity porous polymer column. • Polar PLOT column, incorporating divinylbenzene ethylene glycol/dimethylacrylate. • Highly inert for the analysis of polar and nonpolar compounds. • Common applications include: trace H2S, COS, and mercaptans in hydrocarbon streams. • Temperature range: -60 to 190 °C.
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. Improvements in polymer synthesis and tubing deactivation enable us to make inert, stable Rxi®-XLB columns especially well-suited for analyzing active, high molecular weight compounds with sensitive GC-MS systems, including ion trap detectors. Excellent efficiency, coupled with inertness, low bleed, and high thermal stability, make Rxi®-XLB columns ideal for analyzing semivolatile compounds in drinking water.
Packed Column HAYESEP T 80/100 Silco 6 1/8 NOC/AC
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. Temp. limits 40 to 230 °C
MXT®-Volatiles Columns (Siltek®-treated stainless steel) (proprietary Crossbond® diphenyl/dimethyl polysiloxane phase) • Application-specific columns for volatile organic pollutants. • Temperature range: -20 °C to 320 °C. • 4.5" standard coil diameter. MXT®-Volatiles columns were the first columns designed specifically for analyses of the 34 volatile organic pollutants listed in U.S. EPA Methods 601, 602, and 624. With these columns, you can quantify all compounds listed in these methods, whether you use a mass spectrometer or a PID in tandem with an ELCD. The diphenyl/dimethyl polysiloxane based MXT®-Volatiles stationary phase provides low bleed and thermal stability to 320 °C.
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.
Rt®-Alumina BOND/CFC Columns (fused silica PLOT) • Improved inertness for chlorofluorocarbon (CFC) compounds. • Highly selective alumina-based column, separates most CFCs. • High retention and capacity for CFCs. • Stable to 200 °C. The Alumina BOND/CFC adsorbent is ideal for retaining halogenated compounds, especially CFCs (chlorinated fluorocarbons) like Freon® products. It offers high selectivity, allowing a wide range of CFC isomers to be resolved at above ambient temperatures. The Rt®-Alumina BOND/CFC column is thoroughly deactivated to reduce the reactivity of alumina. Even though there is still some residual reactivity for some mono- or di-substituted CFCs, the majority of these compounds can be accurately quantified from main stream processes or in impurity analyses.
Porous Polymer Columns (packed) 80/100 Mesh. Stainless steel.
Rtx®-5 (G27) Columns (fused silica) (low-polar Rtx®-5 Structure ity phase; Crossbond® diphenyl 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. The diphenyl dimethyl polysiloxane stationary phase is the most popular GC stationary phase and is used in a wide variety of applications. All residual catalysts and low molecular weight fragments are removed from the Rtx®-5 polymer, providing a tight monomodal distribution and extremely low bleed.
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.
Molecular Sieve Columns (packed) Molecular sieve packed columns easily separate permanent gases at above-ambient temperatures. Restek's R&D chemists have developed a process for preparing molecular sieve packings, which result in excellent batch-to-batch reproducibility. In addition, our molecular sieves are preactivated and ready to use. Each column comes with metal endfittings to prevent water or carbon dioxide from adsorbing into the packing during shipment.
Rt-Msieve 5A Columns (fused silica PLOT) • Improve accuracy with sharp, symmetrical peaks for argon, oxygen, and carbon monoxide. • Easily separate permanent gases at temperatures above ambient. • Restek PLOT technology reduces particle release, improving flow reproducibility and reducing downtime for maintenance. • Temperature range: -100 to 300 °C.
(midpolarity Crossbond® phase) • General-purpose columns for alcohols, oxygenates, PCB congeners (e.g., Aroclor mixes), pesticides, and fragrance compounds. • Temperature range: -20 °C to 280 °C. • Equivalent to USP G46 phase. Rtx®-1701 is one of the more popular stationary phases used in capillary GC. The mix of cyano and phenyl functional groups increases the polarity and offers a different elution order relative to less polar Rtx®-1 or Rtx®-5 columns. An Rtx®-1701 column is ideal for confirmation analysis in combination with an Rtx®-35 or Rtx®-5 column. The polymer is fully characterized to ensure long-term reproducibility, column-to-column consistency, and low bleed, even with sensitive detectors such as ECDs and MSDs.
• Application-specific columns for organophosphorus pesticides; best column combination for U.S. EPA Method 8141. • Low bleed—ideal for GC-FPD, GC-NPD, or GC-MS analyses. • Stable to 330 °C. Using sophisticated computer modeling software, we created two stationary phases for separating the 53 organophosphorus pesticides (OPP) listed in EPA Method 8141. Separation is improved and analysis time is significantly reduced, compared to other columns. The extended upper temperature limit of these phases (330 °C) allows analysts to bake out high molecular weight contamination typically associated with pesticide samples. The low-bleed columns are a perfect match for sensitive detection systems.
MXT®-65TG Columns (Siltek®-treated stainless steel) (high-polarity phase; Crossbond® diphenyl dimethyl polysiloxane) • Application-specific columns, specially tested for triglycerides. • Stable to 370 °C. • 4.5" standard coil diameter. The MXT®-65TG phase resolves triglycerides by degree of unsaturation as well as by carbon number. Because of the chemistry required to achieve 370 °C thermal stability, an MXT®-65TG column should not be used for analyses of compounds that contain active oxygenated groups.
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. Rtx®-Wax columns are the most inert and efficient PEG columns currently available. The extended operating temperature range allows analysis of compounds having a wide volatility range and ensures low bleed at temperatures as high as 250 °C. Selectivity is comparable to other Carbowax® columns for compounds of intermediate to high polarity
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