Ihre Suche nach: Chromatographiesäulen

Supplier: VARIAN

The CP-Si™l line consists of a range of stationary phases which are based on a polysiloxane backbone. Functional groups are added to the polymer to introduce selectivity. Each polymer used for the CP-Sil line is manufactured in-house and is optimised to obtain highest degree of reproducibility.

Supplier: VARIAN

Bond Elut™ Jr cartridges have top and bottom Luer fittings allowing easy sample processing when used in conjunction with standard SPE cartridges. Bond Elut™ LRC cartridges have a large reservoir above the sorbent bed and are suitable for use on any standard SPE vacuum manifold.

Supplier: VARIAN

Individual pore size GPC columns offer high resolution over a specific molecular weight range. The linear portion of the calibration curve, where the slope is at its shallowest, defines the MW region over which optimum resolution will be achieved.

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: VARIAN

Die CP-Chirasil-Dex CB-Phase besteht aus Cyclodextrin, das direkt an Dimethylpolysiloxan gebunden ist. Diese Bindung verhindert, dass das Cyclodextrin an verschiedene Stellen im Oberflächenfilm wandert, und sorgt so für eine homogene Enantioselektivität in der gesamten Phase.

Supplier: VARIAN

These columns permit a simple, one stage clean-up as part of a methodology to determine pesticides in many organic matrices. The higher molecular weight fractions such as lipids, polymers, natural resins and dispersed high molecular weight components are easily eliminated in the GPC analysis.

Supplier: VARIAN

The Bond Elut™ Certify extraction cartridge utilises a packed bed consisting of a special, non-polar C8 sorbent and a strong cation exchanger (SCX). Certify is most commonly used to extract basic (cationic) drugs from urine and blood, but it is also very effective for extraction of a wide range of compounds from a diverse range of aqueous matrices.

Supplier: VARIAN

Bond Elut™ Diol (2OH) resembles unbonded silica in its tendency for strong hydrogen bonding with analytes. 2OH can also be employed in the non-polar mode because the hydrocarbon spacer on its functional group provides enough non-polar character for retention of hydrophobic analytes. Bond Elut™ Diol is a listed SPE device for the DIN 14333-1 method on benzimidazole fungicides.

Supplier: VARIAN

A medium polarity sorbent with many uses, Bond Elut™ CN-E is ideal for applications in which extremely non-polar compounds would be irreversibly retained on high carbon load sorbents such as C₈ and C₁₈. This endcapped version of the cyano sorbent is best utilised when extracting analytes from an aqueous matrix.

Supplier: VARIAN

Bond Elut™ Mycotoxin is a novel sorbent which cleans up food extracts for improved trichothecene and zearalenone analysis. Results are comparable or superior to competing methods, including immunoaffinity columns (IaC) and charcoal/alumina columns. The sorbent is a proprietary silica-based ion exchange material.

Supplier: Restek

Ultra-Amino-Säulen bestehen aus hochreiner, kugelförmiger Typ-B-Silica, die die Aktivität minimiert und eine hochdichte Bindung schafft. Diese Säulen sind für selektive und zuverlässige HPLC-Anwendungen konzipiert. Aminopropylsilan bietet reproduzierbare Retention und Effizienz für die Normalphasen- oder HILIC-Analyse einfacher Zucker.

Supplier: VARIAN

Hi-Plex HPLC columns deliver improved efficiency, lower operating pressures and longer column lifetimes from monodispersed materials. With a range of ligand counter ions for optimum selectivity and resolution and materials matched to the USP definitions of media types L17, L19, L34 and L58, the Hi-Plex range is ideal for isocratic separations using water or dilute acid as the eluent. This simplifies your HPLC system requirements and eliminates the use of potentially hazardous organic solvents.

Supplier: VARIAN

Bond Elut™ PSA is an alkylated amine sorbent that contains two different amino functionalities, one secondary and one primary. This gives a slightly higher pKa and ionic capacity compared to Bond Elut™ NH₂. The PSA functional group is a very effective bidentate ligand and is therefore an excellent sorbent for chelation applications. PSA has a significantly higher carbon load than most amino functional sorbents and thus is a better choice for polar compounds, which retain too strongly on Bond Elut™ NH₂.

Supplier: Restek

Die stationäre Phase Rxi®-5Sil MS integriert Phenylgruppen in das Polymerrückgrat. Dies verbessert die thermische Stabilität, verringert das Ausbluten und macht die Phase weniger anfällig für Oxidation. Diese Säulen eignen sich ideal für GC-MS-Anwendungen, die eine hohe Empfindlichkeit erfordern, einschließlich der Verwendung in Ionenfallensystemen.

Supplier: VARIAN

Bond Elut™ Plexa PCX uses a polymeric cation exchange resin that combines the outstanding properties of Bond Elut™ Plexa - superior flow characteristics and improved analytical performance - with strong cation exchange functionalities. This mixed-mode SPE sorbent removes neutral and acidic interferences from the matrix, concentrates basic analytes and therefore improves sensitivity in the determination of basic compounds.

Supplier: VARIAN

Bond Elut™ DEA bears some resemblance to Bond Elut™ NH₂ in its properties but with a slightly lower capacity as an anion exchange sorbent. DEA has a moderately non-polar character due to the alkyl side chains on the amino functionality. These groups still afford a medium level of polarity, higher than C₈ but less polar than C₂ or CN-E.

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

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: HICHROM

CIMmultus™ columns are based on an innovative monolithic technology. Distinguished by large pores/flow through channels these columns are designed for the production, purification, and analytics of large proteins (IgG, IgM, PEGylated proteins), viruses (AAV, adenovirus, lentivirus, influenza, bacteriophages), VLPs, exosomes and pDNA for example.

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: VARIAN

Bond Elut™ LMS polymeric sorbent lets you elute without having to add amine modifiers, buffers, or acids. The elimination of secondary interactions means that elution of analytes can be achieved with pure organic solvents or HPLC mobile phase-compatible solvent mixtures of low ionic strength. These characteristics are crucial to allow compatibility with LC/MS or other delicate analytical techniques.

Supplier: Restek

Allure® C18-Säulen werden unter Verwendung einer einzigartigen Bindungschemie entwickelt, die Hydrolysebeständigkeit und eine hervorragende Reproduzierbarkeit von Charge zu Charge bietet. Die Phase mit hoher Kohlenstoffbeladung weist maximale Retentionseigenschaften auf und eignet sich daher ideal für Anwendungen der Flüssigkeitschromatographie/Massenspektrometrie (LC/MS). Die Phase ist an eine stark basische deaktivierte Silica vom Typ B gebunden, was zu einer verbesserten Peaksymmetrie, selbst bei basischen Analyten, führt. Mit der Säule können Verbindungen, Steroide, Antibiotika und Sprengstoffe analysiert werden.

Supplier: VARIAN

The PLRP-S family of products consists of a range of pore sizes and particle sizes, all with identical chemistry and fundamental adsorptive characteristics. The particles are inherently hydrophobic so there is no bonded phase, alkyl ligand required for reversed-phase separations. This gives a highly reproducible material that is free from silanols and heavy metal ions. Within the extensive product range are columns suitable for analytical separations and preparative purifications.

Supplier: VARIAN

Hexafluoroisopropanol (HFIP) is used as a solvent in GPC for the analysis of important industrial polymers such as polyesters, polyamides and polylactide/glycolide copolymers. For greatly improved performance in extremely polar solvents such as HFIP and trifluoroethanol, we have developed novel 'multipore' technology to produce PL HFIPgel, a PS/DVB packing featuring a monodisperse particle size, high pore volume and high resolution.

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: VARIAN

The VF-5ht improves the analysis of high boiling compounds by exhibiting low bleed, even at high temperatures. Based on ultra-low bleed FactorFour technology, VF-5ht provides unmatched selectivity, sensitivity, and accuracy for the analysis of high-molecular weight compounds.

Supplier: Agilent

InfinityLab Poroshell 120 HILIC chemistries combine innovative particle technology and bonded phases to improve retention and peak shape for polar analytes. This enables quick and efficient separations of challenging, highly charged polar compounds, and achieves superior analytical sensitivity in MS mode using MS-friendly eluents.

Supplier: VARIAN

The MetaSil AQ materials are based on silica that is highly coated with hydrophobic alkyl chains interspersed with hydrophilic short-chain endcapping groups. These columns remain fully extended in aqueous phases, allowing increased interaction between samples and the bonded phase. These columns remain fully extended in aqueous phases, allowing increased interaction between samples and the bonded phase.

Supplier: Agilent

Poroshell 300 columns are ideal for fast separations of proteins and peptides because the superficially porous particle allows for fast flow rates to be used while maintaining sharp, efficient peaks. Peptides and proteins are typically separated slowly to reduce the potential peak broadening of these slow diffusing analytes. However, Poroshell columns use a superficially porous particle made with a thin layer of porous silica on a solid core of silica, reducing the diffusion distance for proteins making practical rapid HPLC separations of peptides and proteins up to 500 to 1000 kDa.

Supplier: Agilent

The ZORBAX® Bonus-RP column has a polar amide group embedded in a long alkyl chain. This novel bonding reduces interactions between basic compounds and the silica support, improving peak shape for the most difficult basic compounds. Peak shape and column lifetime are further improved by triple endcapping. In addition, diisopropyl side groups provide steric protection against acid hydrolysis for good lifetime and low pH. The Bonus-RP column provides an alternate selectivity to C18 and C8 alkyl bonded phases.