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1673 resultat för Kromatografikolonn

Du sökte efter: Kromatografikolonn

Kromatografikolonn

Kromatografikolonner separerar molekyler under gas- eller vätskemetoder. Färdigpackade kolonner finns med olika stationärfaser och resiner. De färdigpackade kolonnerna står emot temperatur- och tryckvariationer som uppstår när mobilfasen trycks genom kolonnen. Det finns kromatografikolonner för preparativa och analytiska metoder för att separera komponenter baserad på individuell polaritet, sammansättning och storlek.

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Capillary columns, CP-Sil PAH CB UltiMetal

Supplier: VARIAN

The UltiMetal CP-Sil PAH CB column combines the advantages of a highly thermo-stable stationary phase with UltiMetal as the column material.

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Capillary columns, CP-TCEP for alcohols in gasoline

Capillary columns, CP-TCEP for alcohols in gasoline

Supplier: VARIAN

CP-TCEP column is able to separate benzene after n-dodecane. In addition, the excellent separation power provides the necessary resolution for complex mixtures such as gasoline.

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Capillary columns, CP-Sil

Capillary columns, CP-Sil

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.

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Capillary columns, CP-Cyclodextrin-β-2,3,6-M-19

Capillary columns, CP-Cyclodextrin-β-2,3,6-M-19

Supplier: VARIAN

The CP-Cyclodextrin-β-2,3,6-M-19 column separates many optical isomers that could not be analyzed previously.

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Solid phase extraction cartridges, Bond Elut™ Certify II

Supplier: VARIAN

Bond Elut™ Certify II was developed specifically for the rapid and effective extraction of acidic drugs and metabolites from urine and other biological matrices. Certify II is a mixed-mode cartridge packed with non-polar C8 and strong anion exchange (SAX) sorbent. It has been optimised for acidic drugs such as 11-nor-delta-9-tetrahydrocannibinol-carboxylic acid, salicylic acid, ibuprofen, acetaminophen and other compounds that possess both non-polar and anionic characteristics.

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Capillary columns, VF-35ms

Capillary columns, VF-35ms

Supplier: VARIAN

VF-35ms is a medium polarity column, which is the ideal choice for trace environmental and chemical analyses, and as a confirmation column.

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Capillary Columns, VF-1ms

Capillary Columns, VF-1ms

Supplier: VARIAN

VF-1ms is a highly inert, non-polar, low bleed GC column providing increased sensitivity over a broad array of applications.

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Solid phase extraction cartridges, Bond Elut™ PRS

Supplier: VARIAN

Bond Elut™ PRS is a strong cation exchange sorbent that is also relatively high in polarity. With no appreciable degree of hydrophobicity, in non-polar solvents, PRS is capable of polar and hydrogen bonding interactions. Due to the very low pKa of PRS, a high ionic strength eluent must be used, and so the use of PRS is recommended for weaker cationic species such as pyridinium compounds.

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Solid phase extraction cartridges, Bond Elut™ PBA

Supplier: VARIAN

PBA is a unique sorbent consisting of a phenylboronic acid covalently linked to a silica gel surface. Covalent processes result in a higher retention to the sorbent surface than other mechanisms, resulting in superior clean-up. The boronate group has a high specificity for cis-diol containing compounds such as catechols, nucleic acids, low molecular weight proteins and carbohydrates.

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Solid phase extraction cartridges, Bond Elut™ Plexa

Supplier: VARIAN

The water-wettable, hydroxylated exterior allows excellent flow, even with biological fluids. A gradient of polarity on the polymer surface shunts small analytes to the more hydrophobic centre of the polymer bead, where they are retained prior to the washing and elution steps. Plexa provides these performance enhancements due to a unique polymeric architecture with a non-retentive, hydroxylated, amide-free surface and a non-polar PS/DVB core for retaining small molecules.

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Solid phase extraction cartridges, Bond Elut™ Sodium Sulphate Drying

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.

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Capillary columns, CP-Chirasil-Dex CB

Capillary columns, CP-Chirasil-Dex CB

Supplier: VARIAN

The CP-Chirasil-Dex CB phase consists of cyclodextrin directly bonded to dimethylpolysiloxane. This bond prevents the cyclodextrin from migrating to different locations in the surface film, delivering homogeneous enantioselectivity throughout the phase.

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Capillary columns, CP-Lowox

Capillary columns, CP-Lowox

Supplier: VARIAN

CP-Lowox offers a unique solution to the chemical and petrochemical industries. It is now possible to analyze trace level oxygenate impurities in gas and liquid hydrocarbon streams.

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Superficially porous particle (SPP) columns, Brownlee™ C18

Supplier: PerkinElmer

These superficially porous particle (SPP) columns produce sharper peaks and faster separation results due to their breakthrough particle design and size.

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UHPLC columns, Ultra C18 (USP L1)

UHPLC columns, Ultra C18 (USP L1)

Supplier: Restek

Ultra C18 is a general purpose reversed phase column with retentive and high-purity packing that exhibits excellent peak shape for a wide range of compounds.

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PLOT columns, CP-PoraPLOT Amines

PLOT columns, CP-PoraPLOT Amines

Supplier: VARIAN

CP-PoraPLOT Amines is a unique column specially designed for the high retention analysis of very volatile amines.

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Capillary columns, CP-Sil 88 for FAME

Capillary columns, CP-Sil 88 for FAME

Supplier: VARIAN

Guaranteed analysis of FAME cis/trans isomers for complete confidence.

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Solid phase extraction cartridges, Bond Elut™ C1

Solid phase extraction cartridges, Bond Elut™ C1

Supplier: VARIAN

Due to the methyl group and subsequent low carbon load, Bond Elut™ C1 is the least retentive of all alkyl group bonded phases for non-polar compounds. However, due to the extensive end capping of this sorbent to mask polar silanol activity, retention and elution of polar and multi-functional analytes can still be achieved. Typical applications include plasma, urine and aqueous samples.

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PLOT columns, CP-PoraPLOT U and CP-PoraPLOT S

PLOT columns, CP-PoraPLOT U and CP-PoraPLOT S

Supplier: VARIAN

CP-PoraPLOT U and CP-PoraPLOT S provide symmetrical peaks from polar and non-polar volatiles for ultimate accuracy.

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Capillary columns, CP-SimDist UltiMetal

Capillary columns, CP-SimDist UltiMetal

Supplier: VARIAN

Lower bleed rate than Fused Silica, best column lifetime and accurate results.

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Capillary columns, CP-Molesieve 5Å

Capillary columns, CP-Molesieve 5Å

Supplier: VARIAN

This molecular-sieve coated capillary column is especially valuable when separating permanent gases.

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Capillary columns, CP-Al₂O₃/Na₂SO₄

Capillary columns, CP-Al₂O₃/Na₂SO₄

Supplier: VARIAN

CP-Al₂O₃/Na₂SO₄ is an aluminum oxide PLOT column that offers high selectivity for separating ppm levels of C₁ to C₅ hydrocarbons in a main stream of C₁ to C₅ hydrocarbons. The Na₂SO₄ deactivation salt provides a polar Al₂O₃ surface, so that unsaturated compounds such as ethylene and acetylene are retained longer. These columns analyse more compounds in a single run than packed columns, while still delivering higher resolution and faster analysis times. When compared to liquid stationary phases, CP-Al₂O₃ provides increased selectivity and allows all C₁ to C₅ hydrocarbon isomers to be separated. CP-Al₂O₃ operates without the need for sub-ambient cooling.

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Solid phase extraction cartridges, Bond Elut™ CN-U

Supplier: VARIAN

Bond Elut CN-U is ideally suited for the extraction of polar compounds from a nonpolar matrix, such as hexane or oils. It is suitable for very polar analytes that may be irreversibly retained on SI or Diol (2OH) SPE phases.

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Omnifit® EZ Glass Chromatography Columns for FPLC and LPLC

Supplier: OMNIFIT

EZ columns are designed to suit the majority of standard laboratory chromatography applications. They are ideal for aqueous systems and compatible with solvents used in common liquid chromatography applications such as protein purification.

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Glass column for column elution

Supplier: BEHR

Glass column with GL45 on both ends, GS 950, according to LUA bulletin no. 20, Innerdiam: 60,00 mm, Längd: 320 mm, Volym: 950 ml

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HPLC columns

Supplier: VICI JOUR RESEARCH

These PEEK columns are designed for naro-bore applications with small amount of samples.

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Analytical guard column, Upchurch Scientific®

Analytical guard column, Upchurch Scientific®

Supplier: UPCHURCH SCIENTIFIC

This narrow-bore short column (2,0×20 mm) creates only a slight pressure increase with virtually no detectable theoretical plate loss when used with a 3 mm int.Ø or larger column.

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Capillary columns, VF-17ms

Capillary columns, VF-17ms

Supplier: VARIAN

VF-17ms is a 50% phenyl, 50% dimethylpolysiloxane, medium polarity, low bleed column for increased sensitivity, accuracy and instrument uptime.

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Capillary columns, CP-Chirasil Val

Capillary columns, CP-Chirasil Val

Supplier: VARIAN

The CP-Chirasil Val columns are designed for the separation of optically active compounds, especially amino acids. They have lower bleed levels than other phases with a Tmax of 200 °C, isothermally and programmed.

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Flash guard cartridge, silica, Reveleris®

Supplier: BUCHI

Column type: Flash/LPLC column, Silica, Flash cartridge, Reveleris®, Partikelstorlek: 40 µm, Bäddvikt: 24 g

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