2573 Results for: "GC Columns"

Supplier: Thermo Fisher Scientific

These columns result in a multimode separation mechanism including hydrophobic, anion-exchange and cation-exclusion interactions. Consequently, retention of basic, neutral and acidic molecules can be either independently or concurrently adjusted by changing ionic strength, pH and organic solvent content in the mobile phase.

Supplier: Thermo Fisher Scientific

These columns offer enhanced retention of polar and hydrophilic analytes. Based on Core Enhanced Technology, they provide fast, high resolution separations without the elevated back pressures required by sub-2 µm particles.

Supplier: Thermo Fisher Scientific

The QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) technique is increasingly becoming the technique of choice for the extraction of pesticide residues in fruit, vegetables and other foods. The QuEChERS method offers the advantage of high recoveries, accurate results and high sample throughput, combined with the associated cost savings with low solvent and labour requirements. Yet the procedure is robust and rugged.

Supplier: VARIAN

Alumina, like silica, is an extremely polar sorbent. The alumina surface tends to be slightly more stable under high pH conditions than unfunctionalised silica. The small particle size of the Bond Elut™ Alumina range ensures high extraction efficiency even when small bed masses are used.

Supplier: WATERS

These columns are suitable for a diverse range of analytes. With mobile phase (pH 1 to 12) and temperature (80 °C) compatibility, this trifunctionally-bonded alkyl column is a universal method development tool that can impact the retention, selectivity and sensitivity of ionisable compounds (with mobile phase pH) while delivering low- and high-pH stability for all analyte types.

Supplier: TOSOH Bioscience

TSKgel® UP-SW Aggregate, the latest addition to the UP-SW series of silica-based size exclusion chromatography (SEC) columns, are specifically designed to facilitate the analysis of mAb aggregates, high molecular weight (MW) proteins and nulceic acids.

Supplier: VARIAN

Native silica is generally regarded as the most polar SPE sorbent available. Bond Elut™ SI is particularly effective at separating compounds with a very similar structure. Applying the analytes in a non-polar solvent, then increasing the solvent polarity by increasing the concentration of a polar modifier, such as THF or ethyl acetate, delivers effective separations.

Supplier: Restek

Pinnacle® DB PFP Propyl, a unique pentafluorophenyl phase with a propyl spacer, uses a highly base-deactivated spherical silica manufactured by Restek. This highly base-deactivated packing exhibits excellent peak shapes for a wide range of compounds, including nucleosides, nucleotides and halogenated compounds.

Supplier: HAMILTON BONADUZ

RCX-10 carbohydrate analysis columns are designed for the isocratic or gradient separation of carbohydrates. When an isocratic method is used with a conductivity, refractive index, ultraviolet, or pulsed amperometric detector (PAD), mono- and di-saccharides such as glucose, fructose, sucrose and lactose can be quickly determined.

Supplier: Cytiva

HiTrap IMAC FF is prepacked with IMAC Sepharose 6 Fast Flow. The resin is charged with the metalion of your choice for Immobilized Metal ion Affinity Chromatography (IMAC) and subsequent purification of polyhistidine tagged proteins.

Supplier: Thermo Fisher Scientific

HyperSep™ Retain™-CX polymeric SPE material is a high purity, highly porous, polystyrene DVB material partially functionalised with sulphonic acid groups to give balanced retention of basic and non polar analytes. HyperSep™ Retain™-CX is ideal for the retention of a wide range of drugs of abuse, including basic and neutral drugs.

Supplier: Thermo Fisher Scientific

HyperSep™ Retain™-AX polymeric SPE material is a high purity, highly porous polystyrene DVB (divinyl benzene) material partially functionalised with quaternary amine groups to give balanced retention of acidic and non polar analytes. HyperSep™ Retain™-AX is ideal for the retention of THC and its metabolites.

Supplier: Agilent

The Hypersil BDS is both base deactivated and encapped to improve peak shapes of basic solutes by minimising interaction with unreacted silanols. Hypersil ODS adds a monolayer of octadecyl silane (C18) to the hypersil silica support.

Supplier: VARIAN

Microsorb™ C18 is an octadecylsilane-covered silica that has been bonded using monofunctional bonding agents under optimised conditions. This material is then endcapped with trimethylsilyl groups to minimise nonspecific binding, maximise mass recoveries and improve peak shape.

Supplier: Agilent

Bond Elut™ C18 is a hydrophobic silica sorbent. C18 is commonly used for non-polar compounds. Bond Elut™ C18 is endcapped to reduce interactions with silanol groups.

Supplier: VARIAN

Bond Elut™ NH₂ is a weaker anion exchanger than sorbents such as SAX (a quaternary amine sorbent that is always charged) and is therefore a better choice for retention of very strong anions, such as sulfonic acids, which may retain irreversibly on a SAX sorbent. Similar to Diol and SI sorbents, Bond Elut™ NH₂ is excellent for the separation of structural isomers.

Supplier: VARIAN

Bond Elut™ SAX is a strong anion exchange sorbent ideally suited for the extraction of compounds such as carboxylic acids, which may not retain effectively on weak anion exchange sorbents. The sorbent is supplied in the chloride counter ion form. You can modify the selectivity of the phase by replacing the chloride ion with other anions, such as acetate and hydroxide.

Supplier: MICROSOLV

These carboxylic acid HPLC columns have a silica hydride surface similar to other TYPE-C™ Silica phases but the uniqueness of Cogent UDA™ is that they can exhibit weak cation exchange properties in addition to RP and ANP retention; a mixed mode is possible with some mobile phases conditions.

Supplier: MICROSOLV

Using proprietary bonding technology, the Cogent C8 300™ has a C8 chain bonded directly to the 5 µm, 300A TYPE-C™ silica surface with two separate points of attachment resulting in silcon-carbon bonds.

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: 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: Thermo Fisher Scientific

These reversed phase columns were developed in conjunction with the Vanquish™ UHPLC system to take advantage of the system's extended pressure capabilities and robustness. The result is a new level of separation, speed and throughput that solve analytical challenges of analysing complex matrices using liquid chromatography and LC-MS.

Supplier: VARIAN

Bond Elut™ C18 OH is a non-end capped version of the octadecyl bonded phases that enables the silanols on the silica surface to be more active. This low-load C18 has well-controlled silanol activity that permits the fractionation of metabolites and enhances retention of basic compounds compared to an endcapped C18. The pore size makes it a good choice for peptide extraction.

Supplier: WATERS

The ACQUITY UPLC BEH glycan separation technology column, also known as BEH Glycan, is optimized for use with ACQUITY UPLC systems with fluorescence detection (FLR), separating the released glycans of biopharmaceuticals as their 2-aminobenzamide (2-AB) derivatives.

Supplier: Agilent

Poroshell 120 is made with a superficially porous particle that has a solid silica core and a porous outer layer. This particle provides high efficiency at lower pressures and is ideal for fast or high-resolution separations of many types of analytes.

Supplier: Resonac

QA-825, DEAE-825: Suitable for the analysis of relatively high molecular weight compounds, such as proteins, peptides, DNA, and RNA. Usable across wide pH range between 2 and 12.

Supplier: HAMILTON BONADUZ

This anion column line is designed to meet the special requirements of anion analysis. These four columns cover all aspects of standard anion analysis, separation of all 8 common anions in one run. The unique design of the highly cross-linked porous-packing material, and the strong covalent bonded surface chemistry, ensure excellent durability and high separation efficiency. These columns are designed to be used with carbonate-bicarbonate buffer in any concentration or with hydroxide gradient, and many other mobile phases.

Supplier: Thermo Fisher Scientific

HyPURITY™ C18 columns are ideal for chromatography of large peptides, small molecules, with unbeatable peak shape for all sample types. The homogeneous surface ensures uniform bonding coverage and eliminates silanolanalyte interactions that cause poor peak shapes for bases, acids and chelating compounds.

Supplier: Thermo Fisher Scientific

These reversed phase columns were developed in conjunction with the Vanquish™ UHPLC system to take advantage of the system's extended pressure capabilities and robustness. The result is a new level of separation, speed and throughput that solve analytical challenges in liquid chromatography and LC-MS analyses.

Supplier: VARIAN

Bond Elut™ CH is a mid-polarity sorbent that exhibits unique selectivities for certain analytes. When employed as a non-polar sorbent, CH has the approximate polarity of a C₂ sorbent. Bond Elut™ CH is often a good choice when non-polar sorbents such as C₁₈, C₈ or C₂ do not provide the desired selectivity.