Votre recherche pour: VARIAN

Fournisseur: VARIAN

Description: Lampe à cathode creuse, Pour: Atomic absorbtion spectroscopy, Single element, hollow cathode lamps coded, using octal base lamps, calcium

Fournisseur: VARIAN

Description: La famille de produits PLRP-S se compose de plusieurs tailles de pores et de particules ayant tous la même structure chimique et les mêmes caractéristiques d'adsorption fondamentales. Les particules sont intrinsèquement hydrophobes, si bien qu'aucun ligand alkyle de phase greffée n'est nécessaire pour des séparations en phase inverse. Cela donne un matériau hautement reproductible exempt de silanols acides et d'ions de métaux lourds. La large gamme de produits disponibles propose des colonnes adaptées aux séparations analytiques et aux purifications préparatives.

Fournisseur: VARIAN

Description: Des gaz propres permettent de réduire le risque d'endommagement de la colonne et d'améliorer la précision ainsi que la sensibilité. Ces filtres incassables et avec indicateur offrent une sensibilité élevée à l'oxygène et à l'humidité. Ils peuvent être installés en quelques secondes sans le moindre outil.

Fournisseur: VARIAN

Description: 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.

Fournisseur: VARIAN

Description: 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.

Fournisseur: VARIAN

Description: These columns are ideal for the anion exchange HPLC separations of proteins and deprotected synthetic oligonucleotides under denaturing conditions.

Fournisseur: VARIAN

Description: 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.

Fournisseur: VARIAN

Description: High efficiency 0,15 and 0,18 mm Int.Ø columns are a simple and cost effective way to increase sample throughput with existing GC or GC/MS instruments.

Fournisseur: VARIAN

Description: Microsorb™ Silica is ideal for the separation of low molecular weight compounds that dissolve in organic solvents. Separations on silica columns depend upon the difference in orientation, type and number of functional groups associated with the compounds in the sample.

Fournisseur: VARIAN

Description: The Select FAME column is tuned for optimal cis-trans separations of FAMEs, especially C₁₈ isomers.

Fournisseur: VARIAN

Description: Ideal as a confirmation column for reliable results.

Fournisseur: VARIAN

Description: Bond Elut™ EWP is based upon standard particle size silica but with 500 Å pores to allow more efficient extraction of large molecules (>15000 MW), which are typically excluded from standard porosity silica phases.

Numéro de catalogue: (VARI7551601C)

Fournisseur: VARIAN

Description: VersaPlate™, VersaPlate well plate tubes, C18 OH, 100 mg

UOM: 1 * 96 ST

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Fournisseur: VARIAN

Description: Vespel/graphite and precision graphite ferrules for chromatography applications.

Fournisseur: VARIAN

Description: Colonnes pour les acides gras libres dans les produits laitiers.

Fournisseur: VARIAN

Description: Bond Elut™ C8 is very similar in properties to C18, but is not as retentive for non-polar compounds, due to its shorter hydrocarbon chain, and therefore reduced carbon loading. C8 is an excellent replacement for C18 when analytes are too strongly retained for effective elution. The potential for polar interactions is somewhat higher than for C18 because there is less coverage of the silica surface. These polar interactions are not, however, a significant property of C8.