Gas Chromatography Columns
Key features of GC columns include their use of molecular sieve columns, which offer high efficiency in separating small molecules like gases and volatile organic compounds. Integrating fused silica in these columns improves their thermal stability and reduces reactivity, ensuring accurate and consistent results. The columns' design maximizes the interaction between the stationary phase and the analyzed compounds, leading to more precise identification and quantification.
In practical terms, users benefit from the columns' reliability in various applications, including environmental testing, forensic analysis, and quality control in manufacturing. Their design and material composition makes them a valuable asset in any laboratory focused on gas chromatography.
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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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DB-5ms
Agilent TechnologiesPhenyl Arylene polymer virtually equivalent to a (5%-Phenyl)-methylpolysiloxane Non-polar Very low bleed, suitable for GC/MS Exhibits inertness to active compounds Temperature limits are -60° to 325°/350°C Improved signal-to-noise ration for increased sensitivity and mass…
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UltiMetal Plus Flexible Metal Ferrules
Agilent TechnologiesPut an end to frustration about GC capillary column connections! With the novel design of our proprietary UltiMetal Plus Flexible Metal ferrule, you can confidently make leak free column unions to capillary flow technology (CFT) devices. These new metal ferrules fix the problems of column breakage…
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DB-225
Agilent Technologies(50%-Cyanopropylphenyl)-dimethylpolysiloxane Mid/high polarity Excellent for separations of cis- and trans-fatty acid methyl esters (FAMEs) Bonded and cross-linked Solvent rinsable Exact replacement of HP-225 Close equivalent to USP Phase G7 Similar Phases:…
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Chromatography Columns
ChemglassGeneral purpose gravity eluted column having a PTFE stopcock and reinforced beaded top. Column is constructed using MEDIUM WALL TUBING. Glass wool (not supplied) is used to support column packing. Lower end of the column has a round bottom.
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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:…
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Inlet Ferrules, High Purity Graphite
Chromatography Research SuppliesThomas Scientific offers a large selection of ferrules made from PTFE, Graphite, Vespel® and Vespel/Graphite composites. Ferrule sizes refer to the size of the fittings into which they fit; they are not the diameter of the ferrule. (For example, 1/16" ferrules are 1/8" diameter.) …
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Cyanopropylphenyl Polysiloxane US EPA 624 optimized column Designed for volatiles analysis Ideal for EPA624, SW-846 and 8240/8260 methods Ideal for USP G43 method Application Areas: EPA method 624, drinking water volatiles, chlorinated hydrocarbons, solvents …
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GS-Alumina
Agilent TechnologiesMost “polar” Alumina phase Aluminum oxide with proprietary deactivation Excellent general use column for light hydrocarbon analysis: C1 to C8 hydrocarbon isomers Separates C1-C4 saturated and unsaturated hydrocarbons Best for resolving cyclopropane from propylene …
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proprietary Crossbond phase The Rtx-VRX stationary phase and optimized column dimensions provide low bleed, excellent resolution, and fast analysis times for volatile compounds. Application-specific columns for volatile organic pollutants. Excellent for U.S. EPA Method 8021 compounds. …
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Elite-1 capillary column, 30m x 0.53mm, 1.50µm
PerkinElmerEquivalent to USP G1, G2 and G38 phases Temperature range -60°C to 350/400°C
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midpolarity Crossbond phase General-purpose columns for alcohols, oxygenates, PCB congeners (e.g., Aroclor mixes), and pesticides. Equivalent to USP G46 phase 4.5" standard coil diameter
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Vigreux style column with indentations for improved vapor-liquid contact. Column height is the length of the indented section. Upper threaded outer joint and lower inner joint are 14/10. Supplied complete with open-top screw cap (MW-102-33) and Viton o-ring (MW-100-08).
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DB-35ms Ultra Inert Columns
Agilent TechnologiesAgilent J&W DB-35ms Ultra Inert is a mid-polar column, for applications where different selectivity is needed for enhanced separations, including pesticide analysis and drugs of abuse testing. DB-35ms Ultra Inert quantifies components at a lower level, with broader linearity and optimized…
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proprietary Crossbond phase Improved resolution and faster analyses, compared to 1701 or phenyl phases, make these the pesticide columns of choice. Rtx-CLPesticides columns are specially designed to overcome the coelutions and analyte breakdown typically encountered in chlorinated pesticide…
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Advantages of metal MXT PLOT columns include: Can be made in small coil diameters—perfect for tight spaces. Rugged material withstands rough handling and shock. Designed for robust performance in process GCs and field instruments. Available in 3.5"-coil diameter or…
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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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Elite-1 capillary column, 40m x 0.18mm, 0.40µm
PerkinElmerEquivalent to USP G1, G2 and G38 phases Temperature range -60°C to 350/400°C
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Elite 624 capillary column 60m x 0.25mm, 1.40µm
PerkinElmerTemperature range -20°C to 240°C Equivalent to USP G43 phase
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The Rtx-Volatile Amine column was designed specifically for analyzing volatile amines in difficult matrices, such as water. The unique base deactivation creates an exceptionally inert surface for these sensitive compounds, resulting in highly symmetrical peaks, which allow low detection limits. The…
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Similar to CG-1192 but with a sealed in COARSE porosity fritted disc to support column packing. Column is constructed using MEDIUM WALL TUBING. Can be used as a gravity eluted column or a flash column (as described by W.C. Still, M. Kahn and A. Mitra of Columbia University in JOURNAL OF ORGANIC…
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SLB®-5ms Capillary GC Column
MilliporeSigmaApplication: The 5% phenyl equivalent phase provides a boiling point elution order with a slight increase in selectivity, especially for aromatic compounds. The low bleed characteristics, inertness, and durable nature make it the column of choice for environmental analytes (such as semivolatiles,…
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polar phase; Crossbond polyethylene glycol Restek’s polar-deactivated surface tightly binds the Carbowax polymer and increases thermal stability, relative to competitive columns. Because of the increased stability produced by the bonding process, Stabilwax columns exhibit long column…
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100% Dimethyl Polysiloxane Non-polar column Dimensionally stabilized phase Low bleed Specifically designed for high temperature hydrocarbon analysis Ideal for simulated distillation Application Areas: ASTM methods D2887 and D6532 Operating Temperature: …
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HP-5ms
Agilent TechnologiesMeets EN14331 Standards (5%-Phenyl)-methylpolysiloxane Non-polar Very low bleed, suitable for GC/MS Exhibits inertness to active compounds Temperature limits are -60° to 325°/350°C Improved signal-to-noise ration for increased sensitivity and mass spectral integrity Bonded and cross-linked…
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Inlet Ferrules, 100% PTFE
Chromatography Research SuppliesThomas Scientific offers a large selection of ferrules made from PTFE, Graphite, Vespel® and Vespel/Graphite composites. Ferrule sizes refer to the size of the fittings into which they fit; they are not the diameter of the ferrule. (For example, 1/16" ferrules are 1/8" diameter.) …
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Rt-XLSulfur Columns
RestekSulfur analyses are traditionally performed using PTFE tubing to improve column inertness. Unfortunately, PTFE tubing is gas permeable, difficult to pack with high efficiency, prone to shrinkage, and has poor thermal stability. The Rt-XLSulfur packed or micropacked column eliminates these problems.…
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100% divinylbenzene 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 peak. The…
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Elite-1 capillary column 60m x 0.32mm, 1.50µm
PerkinElmerEquivalent to USP G1, G2 and G38 phases. Temperature range -60°C to 310/330°C.
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HP-5
Agilent TechnologiesGC capillary columns are typically wound on 7 inch cages that fit into standard-sized GCs like the 6890. The 6850 GC has a smaller oven which requires the use of columns wound on a smaller cage diameter. (5%-Phenyl)-methylpolysiloxane Non-polar Excellent general purpose column …
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Temperature range: -20 to 320 degrees celsius. Similar to USP G43 phase.
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These application-specific columns for blood alcohol analysis baseline separate all critical compounds—including ethanol, methanol, acetone, tert-butanol, acetaldehyde, isopropanol, and n-propanol—in less than 2 minutes. Every Rtx-BAC Plus 1 and Rtx-BAC Plus 2 column is qualified with a…