Conforms 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.…

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.

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…

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…

midpolarity Crossbond 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…

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 results in excellent batch-to-batch reproducibility. In addition, our molecular sieves are…

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

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…

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. …

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:…

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.…

low-polarity phase; Crossbond diphenyl dimethyl polysiloxane 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 MXT-5 polymer,…

proprietary Crossbond diphenyl/dimethyl polysiloxane phase Rtx-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…

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…

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…

Increased 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…

Restek offers a full range of porous polymers, including HayeSep and Porapak polymer packings for analyses of volatile compounds and light solvents.

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…

midpolarity phase; Crossbond phenyl methyl polysiloxane The high thermal stability of Rtx-50 columns makes dual-column analysis possible with common phases such as Rtx-1 or Rtx-5MS. General-purpose columns for pesticides, herbicides, rosin acids, phthalate esters, sterols Equivalent to…

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…

nonpolar phase; Crossbond 100% dimethyl polysiloxane—for simulated distillation MXT-2887 columns' stationary phase, column dimensions, and film thicknesses have been optimized to exceed the resolution and skewing factor requirements specified in ASTM Method D2887. Each column is…

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…

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. …

midpolarity proprietary phase The Rxi-PAH GC columns were designed by Restek with a higher phenyl-content stationary phase that provides unique selectivity to separate important polycyclic aromatic hydrocarbons (PAH) for food safety that cannot be distinguished by mass spectrometry. Even…

Crossbond 100% dimethyl polysiloxane—optimized for hydrocarbon analysis Gasolines are complex mixtures of hundreds of compounds. Information about concentrations of the individual components is important for evaluating raw materials and for controlling refinery processes. ASTM D6730-01…

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…

2,3-di-acetoxy-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…

Proprietary cyclodextrin material 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 columns that have pure…

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…

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…

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.

polar phase; Crossbond Carbowax polyethylene glycol—provides oxidation resistance General-purpose columns for FAMEs, flavor compounds, essential oils, amines, solvents, xylene isomers, and U.S. EPA Method 603 (acrolein/acrylonitrile). Equivalent to USP G14, G15, G16, G20, and G39…