You searched for: Chromatography Sorbents

Supplier: VARIAN

PL Cl-Trt-Cl supports peptide synthesis using the Fmoc approach. This resin can be used for the synthesis of a wide range of organic acids, and has also been used for the synthesis of amines, phenols and other alcohols.

Supplier: VARIAN

PL-Wang is a 4-alkoxybenzylalcohol functionalised polystyrene, prepared from copolymerised PL-CMS, for solid phase peptide synthesis using Fmoc protection strategies and is cleaved using ~ 95% TFA. Particularly useful for solid phase synthesis of small molecules which have a carboxylic acid functional group.

Supplier: VARIAN

Aminomethylstyrene resin is a particularly versatile material suitable for the attachment of a variety of spacers, handles and linkers (for use in solid phase synthesis).

Supplier: VARIAN

Bondesil™ C18 bulk sorbent, 120 µm

Supplier: VARIAN

SepTech™ C18 bulk media, designed for high performance separations at high capacity. The two pore sizes, 60 Å and 150 Å, have been optimised to give high capacity for small molecules and larger natural molecules and peptides, respectively.

Supplier: VARIAN

The PLRP-S reversed phase HPLC media delivers the pure oligonucleotides (oligos) required for genomics applications, including quantitative PCR, microarrays, and gene synthesis assays.

Supplier: VARIAN

Strongly basic anion exchanger, Cl⁻ form. Moist, light yellow spherules.

Supplier: Restek

These packaging materials can be used for easy scale-up to preparative chromatography or for packing the desired columns.

Supplier: Restek

Graphitized carbon black offers unique selectivity and very little adsorption for alcohol analyses. CarboBlack packings are treated with KOH or picric acid for basic or acidic compounds, and special alcoholic beverage loadings are available. CarboBlack supports provide resolution and retention similar to Carbopack™ and Carbograph supports.

Supplier: Thermo Fisher Scientific

Tenax® TA, Packed: Bottle

Supplier: Restek

Ottawa sand is listed in several U.S. EPA methods as the specified medium for matrix spike and laboratory control blanks.

Supplier: Restek

These bonded silica packings with n-octane or cyanopropyl (OPN) functional groups yield faster separations of C1 to C4 hydrocarbons, higher thermal stability, shorter conditioning times, and longer lifetimes.

Supplier: Restek

Acylation reagents offer the same advantage available from silylation reagents: creating less polar, more volatile derivatives. In comparison to silylating reagents, the acylating reagents can more readily target highly polar multifunctional compounds, such as carbohydrates and amino acids. In addition, acylating reagents offer the distinct advantage of introducing electron-capturing groups, thus enhancing detectability during analysis.

Supplier: Restek

Silylation is the most widely used derivatisation procedure for sample analysis by GC. In silylation, an active hydrogen is replaced by an alkylsilyl group such as trimethylsilyl (TMS) or tert-butyldimethylsilyl (tert-BDMS). Silyl derivatives are more volatile, less polar, and more thermally stable. As a result, GC separation is improved and detection is enhanced.

Supplier: Restek

Anhydrous sodium sulphate is the most common drying agent used to remove moisture from sample extracts. Activate by heating to 400 °C for four hours before use.

Supplier: Restek

Florisil® PR is commonly used to remove polar interferences from pesticide residues. This bulk material is ideal for labs packing their own extraction cartridges for pesticide residue extractions.

Supplier: Restek

Packing material, Tenax®-TA, mesh size of 20/35

Supplier: Thermo Fisher Scientific

Trimethylsilyl N-trimethylsilylacetamidate, pyridine for GC, BSA:Pyridine, 25 ml

Supplier: Restek

Packing material, Porapak S, mesh size of 80/100, temperature limits of 250 °C

Supplier: Restek

Diatomaceous earth is used as a filter aid to improve extraction efficiency of densely packed soils, such as clays. By mixing the sample with diatomaceous earth, recoveries can be improved and excess moisture can be absorbed.

Supplier: Restek

Packing material, HayeSep® B, mesh size 60/80, temperature limit up to 190 °C