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Du søgte efter: Kromatografikolonner

Kromatografikolonner

VWR har et stort udvalg af kromatografikolonner til bl.a. HPLC, LC-MS, UHPLC, GC, GPC og SFC til mange forskellige separations metoder såsom revers fase og HILIC. Kromatografikolonner separerer molekyler ved gas- eller væskekromatografiske metoder. Vi fører færdigpakkede preparative og analytiske kolonner med forskellige materialer og resiner i mange forskellige størrelser og brands.

HPLC columns, Allure® Biphenyl (USP L11)

Supplier: Restek

Highly retentive and selective for aromatic and unsaturated compounds. Increased retention and selectivity, compared to phenyl phases. Excellent selectivity for steroids, tetracyclines, explosives and other unsaturated compounds.

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Columns, MicroBore

Columns, MicroBore

Supplier: VARIAN

The microbore columns are ideal for use with detectors requiring low flow rates such as some mass
spectrometers and with capillary LC systems. Easily accommodates high temperatures for better selectivity and resolution between impurities and the target oligo.

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HPLC column, Roc Cyano

HPLC column, Roc Cyano

Supplier: Restek

This cyano is a traditional monomeric cyanopropylsilane that is recommended for assays where alternate selectivity, or confirmation, to a C18 or C8 column is desired. It can be used in normal phase, reversed phase (best with mobile phase pH between 5 and 7), and HILIC modes. It is an excellent choice for the analysis of protonated bases.

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Capillary columns, Rtx®-2330 (fused silica)

Capillary columns, Rtx®-2330 (fused silica)

Supplier: Restek

High polar phase; biscyanopropyl cyanopropylphenyl polysiloxane, general-purpose columns for cis/trans FAMEs, dioxin isomers.

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Capillary columns, Rtx®-35 amine (fused silica)

Capillary columns, Rtx®-35 amine (fused silica)

Supplier: Restek

These application-specific, midpolarity phase, Crossbond 35% diphenyl/65% dimethyl polysiloxane, columns, are ideal for amines and other basic compounds, including alkylamines, diamines, triamines, ethanolamines, and nitrogen-containing heterocyclics.

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GC Columns, Rt-bDEXm™

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. Permethylated beta cyclodextrin added into 14% cyanopropylphenyl / 86% dimethyl polysiloxane.

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GC columns, Rt®-βDEXsa (fused silica)

GC columns, Rt®-βDEXsa (fused silica)

Supplier: Restek

The Rt®-βDEXsa columns have a unique selectivity for esters, lactones, and other fruit flavor components.

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Capillary columns, MXT®-1 SimDist

Capillary columns, MXT®-1 SimDist

Supplier: Restek

These MXT®-1 SimDist methyl silicone polymer gives the correct retention time and boiling point curve.

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Capillary columns, MXT®-1

Capillary columns, MXT®-1

Supplier: Restek

MXT®-1 columns exhibit long lifetime and very low bleed at high operating temperatures. A proprietary synthesis process eliminates residual catalysts that could cause degradation and increase bleed.

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Gel permeation chromatography columns, PLgel MIXED

Gel permeation chromatography columns, PLgel MIXED

Supplier: VARIAN

Using these mixed columns you can eliminate mismatched column sets and spurious peaks for more reliable results. Every column contains a mixture of individual pore size materials, accurately blended to cover a specified broad range of molecular weight with a linear calibration to eliminate column mismatch. Simply add extra columns for even greater resolution.

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Capillary columns, Rtx®-2887

Capillary columns, Rtx®-2887

Supplier: Restek

These Rtx-2887 column's stationary phase, column dimensions, and film thickness have been optimised to exceed the resolution and skewing factor requirements. Individually tested to guarantee a stable baseline with low bleed and reproducible retention times.

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Solid phase extraction cartridges, Bond Elut™ C18

Solid phase extraction cartridges, Bond Elut™ C18

Supplier: VARIAN

Bond Elut™ C18 is the most hydrophobic, bonded silica sorbent in the Bond Elut™ range. It is the most popular SPE sorbent because of its extremely retentive nature for non-polar compounds. C18 is generally regarded as having the broadest spectrum of retention among bonded silica sorbents, since it retains most organic analytes from aqueous matrices. When analysing small to intermediate molecules, Bond Elut™ C18 can be used for desalting aqueous matrices prior to ion exchange, as salts pass through the sorbent unretained.

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UHPLC columns, Pinnacle® DB PFP Propyl (USP L43)

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.

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HPLC columns, Viva PFP Propyl (USP L43)

HPLC columns, Viva PFP Propyl (USP L43)

Supplier: Restek

Viva PFP Propyl columns with a pentafluorophenyl propyl phase are ideal for retention and selectivity of charged bases, electronegative compounds and amine-containing compounds.

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UHPLC columns, Pinnacle® DB Biphenyl (USP L11)

UHPLC columns, Pinnacle® DB Biphenyl (USP L11)

Supplier: Restek

Highly base-deactivated spherical silica manufactured by Restek. Pinnacle® DB Phenyl columns offer alternate selectivity to straight chain hydrocarbon phases, especially for aromatic analytes. Replaces Hypersil® BDS Phenyl and Pinnacle® Phenyl Amine.

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HPLC columns, Allure® AK

HPLC columns, Allure® AK

Supplier: Restek

This highly retentive and selective phase is developed specifically for the analysis of aldehydes and ketones as DNPH derivatives. Allure® AK is a reversed phase HPLC material that has the unique ability to separate all 13 carbonyl compounds using a simple acetonitrile/water gradient.

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Capillary columns, Rtx®-PCB (fused silica)

Capillary columns, Rtx®-PCB (fused silica)

Supplier: Restek

These proprietary Crossbond phase columns with unique polymer are suitable for PCBs analysis by GC-ECD or GC-MS.

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Capillary columns, Rtx®-biodiesel TG (fused silica)

Capillary columns, Rtx®-biodiesel TG (fused silica)

Supplier: Restek

Rtx-Biodiesel TG (fused silica) columns with retention gaps feature Alumaseal® connectors to prevent leaks and extend column life.

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Columns, D3606 application set

Columns, D3606 application set

Supplier: Restek

Packed, 2 column set gives complete resolution of benzene from ethanol, no compromising coelutions and for accurate quantification of benzene and toluene.

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GC Columns, Rxi-PAH Columns (fused silica)

GC Columns, Rxi-PAH Columns (fused silica)

Supplier: Restek

The Rxi-PAH GC columns were designed 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.

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Solid phase extraction cartridges, Bond Elut™ AccuCAT

Solid phase extraction cartridges, Bond Elut™ AccuCAT

Supplier: VARIAN

Bond Elut AccuCAT cartridges are mixed bed SPE cartridges consisting of a strong cation exchange (SCX) and a strong anion exchange (SAX) sorbent packed into one bed. AccuCAT is effective for the extraction of acidic, basic and neutral analytes from urine and other biological samples. AccuCAT is particularly effective for catecholamine extraction from bio fluids.

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Capillary columns, CP-SilicaPLOT

Capillary columns, CP-SilicaPLOT

Supplier: VARIAN

CP-SilicaPLOT brings the benefits of capillary PLOT columns (higher efficiency and faster analysis time) to many applications that previously could only be done by packed columns.

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Solid phase extraction cartridges, Bond Elut™ PSA

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.

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Solid phase extraction cartridges, Bond Elut™ CBA

Supplier: VARIAN

CBA is a mid-polarity sorbent and weak cation exchanger (pKa 4,8). It can be used with a wider range of counter-ions than lower pKa sorbents like SCX and will demonstrate easier elution of quaternary amine functionalised analytes.

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Capillary columns for ASTM method

Supplier: VARIAN

Column type: GC kolonne, Columns for analysing PCBs in insulating liquids, Ø indv.: 0,25 mm, Længde: 50 m, Filmtykkelse: 0,25 µm

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Capillary columns, CP-Volamine™

Capillary columns, CP-Volamine™

Supplier: VARIAN

CP-Volamine is optimized for the separation of volatile amines.

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GC columns, J&W CP-Sil 24 CB

Supplier: VARIAN

CP-Sil 24 CB is a medium polarity column with no cyano groups, making it ideal for use with ECD, and perfect for confirmation in drug and pesticide analysis.

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Capillary columns, VF-DA

Capillary columns, VF-DA

Supplier: VARIAN

VF-DA is a unique, guaranteed low bleed FactorFour GC column for drugs of abuse confirmation testing. The VF-DA column has high recovery for trace components and excellent resistance to direct methanol injections.

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Capillary columns, VF-624ms

Capillary columns, VF-624ms

Supplier: VARIAN

VF-624ms columns set a new standard for the analysis of volatile organic compounds.

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Solid phase extraction cartridges, Bond Elut™ Focus

Supplier: VARIAN

Bond Elut™ Focus solid phase extraction cartridges with enhanced polar recovery. Features a unique amide functionalised polar-enhanced sorbent technology that delivers outstanding retention for polar and non-polar analytes.

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