You searched for: Chromatography Columns

Supplier: Restek

These analytical HPLC columns with spherical shaped traditional monomeric cyanopropylsilane are well suitable for the analysis of protonated bases and also useful for confirmation of analysis on a C18 or C8 columns.

Supplier: Restek

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.

Supplier: Restek

General purpose columns for solvents, Freon® fluorocarbons, alcohols, ketones, silanes, glycols and drugs of abuse. Excellent confirmation column with an Rtx®-5 column for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons and chlorophenoxy herbicides.

Supplier: Restek

Highly retentive and selective phase for separating polar analytes, including polar acidic compounds. Compatible with highly aqueous (upto 100%) mobile phases. Highly base deactivated.

Supplier: Restek

Rxi® fused silica capillary GC columns are designed specifically for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity.

Supplier: Restek

Separations of more than one hundred chiral compounds have been achieved using our unique DEX columns, and DEX columns continue to demonstrate stability after hundreds of temperature program cycles. 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 cyclodextrin stationary phases. 2,3-di-O-ethyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added into 14% cyanopropylphenyl/86% dimethyl polysiloxane

Supplier: Restek

Graphitised 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 non silicone liquid phase. CarboBlack C support can hold up to a 1% loading of a non silicone liquid phase.

Supplier: Restek

These biphenyl columns offer a greater degree of dispersion than conventional phenyls and a greater degree of polarizability than phenyl hexyls, creating higher selectivity and a greater range of usability. Because of these heightened interactions, this column shows substantial increases in retention—especially for dipolar, unsaturated, or conjugated solutes—and enhanced orthogonal selectivity when using methanol mobile phases.

Supplier: Restek

Cartridges have been specifically designed to provide consistent and reproducible results for the method or application stated.

Supplier: Restek

Restek Rt®-Alumina BOND columns are highly selective for C1 to C5 hydrocarbons and separate all saturated and unsaturated hydrocarbon isomers above ambient temperatures.

Supplier: Restek

These cartridges are manufactured using high density polypropylene and have polyethylene frits unless otherwise noted. Hydrophilic (polar) adsorbents used to extract hydrophilic analytes from nonpolar matrices, such as organic solvents (e.g., polar contaminants from sample extracts).

Supplier: Restek

Application-specific columns with unique selectivity for volatile organic pollutants. The Rtx®-502.2 column is cited in U.S. EPA method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks. For separation of trihalomethanes, ideal polarity for light hydrocarbons and aromatics.

Supplier: Restek

These biphenyl coulmns have a greater degree of dispersion than conventional phenyls and a greater degree of polarisability than phenyl hexyls, creating higher selectivity and a greater range of usability. With heightened interactions shows substantial increases in retention for dipolar, unsaturated, or conjugated solutes and enhanced orthogonal selectivity when using methanol mobile phases.

Supplier: Restek

An intrinsically base-deactivated (IBD) phase, containing a polar group within, or intrinsic to, the hydrocarbon bonded phase. Unique selectivity and a high level of base deactivation, while reducing or eliminating the need for mobile phase additives.

Supplier: TRANSGENOMIC

Ion exclusion is the preferred method for the separation of weakly ionisable species such as organic acids and alcohols.

Supplier: Restek

Aqueous C18 is a rugged, reversed-phase column with a well-balanced retention profile. It can effectively retain more types of solutes than a conventional C18 and is ideal for multicomponent LC-MS analyses. The general-purpose Aqueous C18 boasts high reproducibility and compatibility with many mobile phase conditions - even 100% aqueous. And when used with a gradient, it eliminates the all-too-common issue of multiple compounds eluting near the column void time.

Supplier: Restek

Stabilwax-MS columns ensure reproducible retention times from run to run, even with temperature cycling. When methods require trace analysis, this highly polar, low-bleed stationary phase produces excellent signal-to-noise levels. Ideal for food and flavor analysis (e.g., essential oils), fragrance and allergen analysis, as well as industrial solvent and chemical analysis.

Supplier: Restek

Ultra IBD is a polar-embedded column that acts as a strong hydrogen bonder. With a unique polar group this column is very retentive and selective for acids. It also provides symmetrical peak shape for strong bases. This columns are compatible with 100% aqueous mobile phases and can be used under reversed-phase or HILIC conditions to retain very polar, ionic compounds in highly organic mobile phases.

Supplier: Restek

Base-deactivated spherical silica that is optimised for UHPLC stability. Designed to resolve complex mixtures of polycyclic aromatic hydrocarbons (PAHs). Complete resolution of all 16 EPA 610 PAHs, plus two other routinely analyzed PAH compounds, in less than five minutes to greatly reduce run times and increase sample throughput.

Supplier: OPTIMIZE TECHNOLOGIES

Combining a versatile selection of packed beds and the use of a convenient quick-connect holder, OPTI-LYNX™ provides numerous options for chromatographers for on-line or off-line sample clean-up and pre-concentration.

Supplier: WATERS

Styragel® HR columns are high-resolution GPC columns packed with 5 µm particles and are ideal for characterising samples in the low to mid molecular range where high resolution is critical.

Supplier: WATERS

Nova-Pak® C18 columns are general purpose, silica based, reversed phase C18 columns that are based on 4 µm particle technology.

Supplier: WATERS

Atlantis HILIC silica columns are used in combination with high organic mobile phases (>80% acetonitrile) to provide retention of analytes that are simply too polar to be retained by reverse-phase chromatography.

Supplier: WATERS

µBondapak® C18 columns are general purpose, silica-based, reversed phase C18 columns that are based on 10 µm particle technology.

Supplier: WATERS

XTerra® MS C8 columns are general purpose, hybrid-based, reversed phase C8 columns that are designed to be compatible with mass spectrometry applications. These first generation columns provide superior pH stability compared to a silica based column.

Supplier: WATERS

Symmetry® C18 columns feature monofunctionally bonded C18 ligands on a high purity base-deactivated silica.

Supplier: WATERS

XTerra® RP18 columns are general purpose, hybrid-based, reversed phase C18 columns that incorporate Waters patented embedded polar group technology to improve peak shape performance for highly basic compounds. These first generation columns provide superior pH stability compared to a silica-based column.

Supplier: WATERS

These columns complement the ACQUITY BEH C18 and C8 phases and provide a necessary and powerful tool for HPLC method development. The embedded carbamate group in the bonded phase ligand provides alternate selectivity, especially for phenolic compounds compared to straight chain alkyl columns.

Supplier: WATERS

The XBridge™ BEH C8 sorbent is less retentive compared to the XBridge™ BEH C18 sorbent. The trifunctionally bonded sorbent offers the widest usable pH range (1 to 12), superior low pH stability and ultra-low column bleed.

Supplier: WATERS

Silica-based bonded phase with strong hydrophobicity used to adsorb analytes of even weak hydrophobicity from aqueous solutions.