Chromatography Sorbents
Sorbents assist with separating mixture compounds in any of the chromatography methods. Ready-to-use chromatography sorbents make any isolation, identification, or purification procedure fast and simple. Stationary phase sorbents are offered in different particle sizes or polarities to match the chemical and physical properties of sample compounds for precise results. Chromatography sorbents may come with or without additives such as binders for stabilization or fluorescent indicators to compensate for hard to see ultra-violet ranges.
Diatomaceous earth sorbents
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.
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Resin, PL-CMS, StratoSpheres™
Supplier: VARIAN
Chloromethylpolystyrene known as merrifield resin, PL-CMS is a copolymer support for solid phase synthesis of peptides using Boc chemistry.
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Bulk adsorbents, Florisil® PR
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.
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Resin, PL-AMS, StratoSpheres™
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).
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Packing material for columns, Res-Sil
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.
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Resin, PL Cl-Trt-Cl, StratoSpheres™
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.
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Resin, PL-Wang, StratoSpheres™
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.
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Acylation derivatisation reagents
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.
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Silylation derivatisation reagents
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.
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Bulk adsorbents, sodium sulfate
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.
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Silylation reagents
Supplier: Thermo Fisher Scientific
Trimethylsilyl N-trimethylsilylacetamidate, pyridine for GC, BSA:Pyridine, 25 ml