You searched for: Chromatography Columns

Supplier: VARIAN

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

Supplier: VARIAN

The Dynamax preparative column hardware utilizes a patented dynamic axial compression (DAC) design and is the ideal format for the development and optimization of a high throughput or high yield purification.

Supplier: Agilent

These columns are recommended for semivolatiles, halogenated compounds, pesticides, herbicides, drugs of abuse, amines, unknown sample screening.

Supplier: VARIAN

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

Supplier: Agilent

These HPLC columns are packed with polymeric, nonporous, ion exchange particles and are designed for high resolution, high recovery and highly efficient separations of peptides, oligonucleotides and proteins.

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.

Supplier: Agilent

ZORBAX® 80 Å StableBond® columns are made using bulky, patented, unique silanes that sterically protect the siloxane bond. Acid labile endcapping reagents are not used.

Supplier: VARIAN

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

Supplier: VARIAN

These Pursuit™ columns are ideal for analysing lead compounds and biological samples. The need for ion pairing agents such as TFA is often eliminated, thus maximising the performance of single and parallel multi-channel LC/MS systems.

Supplier: Agilent

General purpose columns for solvents, sulfur compounds, oxygenated compounds, C1 to C3 isomers, methane, air/CO, and alkanes upto C12. Ideal for ethane, ethylene and ethyne separation.

Supplier: VARIAN

Bond Elut™ PH is a non-polar bonded silica material which exhibits a different selectivity to alkyl or aliphatic functionalised phases such as C8 or cyclohexyl. The electron density present in the aromatic ring affords an enhancement in the retention of conjugated or aromatic ring-containing analytes due to desirable pi-pi interactions.

Supplier: Agilent

Rugged, high-resolution separations up to five times faster than traditional 5 µm methods.

Supplier: Agilent

Eliminates particle leakage to improve data quality with light scattering detection. Typical applications: polyethylenes, polyolefins. Compatible with organic solvents.

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: 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.

Supplier: VARIAN

These Polaris™ phases have rapid high resolution separations based on ultra pure silica to which alkyl chains and polar modifications are attached.

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

The Polaris C18-A phase is specially designed for high-throughput and LC/MS analysis of polar analytes in drug discovery, drug metabolism, and AR&D areas.

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

Polaris™ C18-ether phase has a rapid high resolution separation based on ultra pure silica to which alkyl chains and polar modifications are attached.

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

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.

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

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: Agilent

Step 1: Extraction
Choose the extraction salt packet based on your method of analysis, AOAC or EN. The buffered extraction salts are amenable for more liable pesticides. Adding solvent and then salts to a comminuted fruit or vegetable sample (10 g or 15 g) enables you to extract the pesticides of interest into the organic layer. However, adding a food sample with a high percentage of water directly to the salts may create an exothermic reaction that can affect your analyte recoveries.

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.

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.

Supplier: KNAUER

These columns with HPLC phase are perfectly suited to take on routine analyses as well as the most ambitious chromatography tasks.

Supplier: Restek

These traditional endcapped C18 columns are ideal for general-purpose use in reversed-phase chromatography.