Restek Gas Chromatography Columns
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porous divinylbenzene homopolymer Porous polymers are unique, highly retentive stationary phases with a wide application range that are able to elute both polar and nonpolar compounds. They are very hydrophobic, so water has no impact on retention times and even elutes as a good chromatographic…
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Extend analytical column lifetime by preventing degradation from harsh "steam-cleaning" water injections Maximum temperature: 325°C When transfer lines from purge-and-trap systems, air monitoring equipment, or other instruments carry condensed water vapor, deactivated column…
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Strength-tested Inexpensive Coiled in 7-inch diameters, banded in 5-meter sections, and mounted in a Restek cage
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midpolarity phase; Crossbond phenyl methyl polysiloxane General-purpose columns for pesticides, herbicides, rosin acids, phthalate esters, and sterols. Temperature range: 0°C to 300°C. Equivalent to USP G3 phase. 4.5" standard coil diameter.
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D3606 Application Column Set
RestekConforms to the specifications established in the current ASTM method D3606 for the quantitation of benzene and toluene in spark ignition fuel containing ethanol. Complete resolution of benzene from ethanol—no compromising coelutions. Accurate quantification of benzene and toluene.…
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low- to midpolarity phase General-purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds. Temperature range: -20°C to 280°C. Equivalent to USP G43 phase. 4.5" standard coil diameter.
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Micropacked GC Columns
RestekIncreased efficiency over traditional packed columns. Higher capacity than PLOT columns. Made from inert, flexible SilcoSmooth tubing. Wide range of packings available. Standard coils fit all instruments. No special instrument configurations required. Efficient, Inert, and…
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polar phase; Crossbond base-deactivated Carbowax polyethylene glycol—for amines and basic compounds Stabilwax-DB columns reduce adsorption and improve responses for many basic compounds, without analyte derivatization or column priming. For different selectivity of basic compounds, or…
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low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to…
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Restek’s molecular sieve 5A PLOT columns are designed for efficient separation of argon/oxygen and other permanent gases, including carbon monoxide. Special coating and deactivation procedures ensure chromatographic efficiency and the integrity of the porous layer coating. Molecular sieves…
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polar phase; Crossbond polyethylene glycol 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.…
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low-polarity proprietary phase Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column…
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low- to midpolarity phase The unique polarity of the Rtx-624 column makes it ideal for analyzing volatile organic pollutants. Although the Rtx-502.2 column is recommended in many methods, the Rtx-624 column offers better resolution of early eluting compounds. The Rtx-624 phase produces greater…
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Fast analysis times and sharp mono-, di-, and triglyceride peaks. Stable at 430°C for reliable, consistent performance.
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2,3-di-O-ethyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane By adding β or γ cyclodextrin to our bonded Rtx-1701 stationary phase, we greatly enhance overall utility and column lifetime for our chiral columns, compared to…
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highly polar phase; biscyanopropyl cyanopropylphenyl polysiloxane Rtx-2330 is one of the most polar capillary column stationary phases. Cyano groups on both sides of the polymer backbone give the phase a strong dipole moment and high selectivity for cis/trans compounds or compounds with…
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midpolarity Crossbond phase Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column…
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2,3-di-O-propyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane By adding β or γ cyclodextrin to our bonded Rtx-1701 stationary phase, we greatly enhance overall utility and column lifetime for our chiral columns, compared to…
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CarboBlack Columns
RestekGraphitized 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.…
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low- to midpolarity phase Many analysts feel the Rtx-1301 column has the best cyanosiloxane bonded stationary phase available, with no other column manufacturer providing lower bleed, longer lifetime, or better inertness. Our polymer is fully characterized to ensure long-term reproducibility,…
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Column bleed, measured by ECD, is extremely low at temperatures up to 330°C, which is critical for baking-out the column to remove high-boiling compounds commonly found in pesticide/PCB extracts. An analysis time of less than 10 minutes improves throughput compared to other stationary phases. …
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PLOT Column Particle Trap
RestekThe technology used to adhere particles in PLOT columns is excellent; however, it is still possible for particles to dislodge when extreme pressure shocks and gas flow changes occur. This sometimes happens when valve switching or backflushing is used. In those cases, using particle traps is…
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Extend column lifetime. Excellent inertness—obtain lower detection limits for active compounds. Sharper chromatographic peaks by utilizing retention gap technology. Maximum temperature: 360°C
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ShinCarbon ST Columns
RestekAnalyze oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide with one column at room temperature. ShinCarbon ST material, a high surface area carbon molecular sieve (~1,500 m 2 /g), is the ideal medium for separating gases and highly volatile compounds by gas solid chromatography (GSC).…
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Chemists using guard columns in the analyses of basic compounds frequently observe peak tailing and low recovery. This happens because conventionally deactivated tubing surfaces can be adsorptive to basic compounds. Restek offers base-deactivated guard columns, as well as base-deactivated inlet…
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polar phase; Crossbond polyethylene glycol The elution order of polyunsaturated FAMEs on FAMEWAX columns is comparable to that on other Carbowax columns, but baseline resolution is achieved in significantly less time. Application-specific columns for FAMEs, specially tested with a FAME…
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midpolarity phase; Crossbond 35% diphenyl/65% dimethyl polysiloxane 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,…
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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…
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nonpolar phase; Crossbond 100% dimethyl polysiloxane—for simulated distillation The Rtx-2887 column's stationary phase, column dimensions, and film thickness have been optimized to exceed the resolution and skewing factor requirements specified in ASTM Method D2887. Each column is…
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Restek Rt-Alumina BOND columns are highly selective for C1–C5 hydrocarbons and separate all saturated and unsaturated hydrocarbon isomers above ambient temperatures. The reactivity of the aluminum oxide stationary phase is minimized, by deactivation with inorganic salts like KCl or…
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nonpolar phase 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. Lowest bleed for longest column lifetime. …
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Molecular Sieve Columns
RestekMolecular 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 results in excellent batch-to-batch reproducibility. In addition, our molecular sieves are…