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Columns and cartridges for gas, ion, HPLC, low-pressure LC, and flash chromatography; includes pre-packed and open columns, packing, guard columns and accessories, and other supplies for flash chromatography.
Prepared by the reaction of silica gel with n-octadecyltrichlorosilane. After hydrolysis of the unreacted chloro groups, hydroxyl groups are blocked with trimethylsilyl groups.
Weakly basic anion exchange resin for deashing and mixed bed polishing of high fructose corn syrups. This resin meets requirements of FDA Food Additive Regulation 21 CFR 173.25.
Spherical (better packed bed performance than granular particles). Hard and non-friable (pack well, will not break). Highly porous (high surface areas). Used for molecules with an analyte size relative to C2-C5 n-alkanes. Hydrophobic (can be used in high humidity environments)
Supelpak™-2SV is purified Amberlite™ XAD2 that has been specially cleaned and tested for optimal performance in the capturing and extraction of semivolatile organics. Packaged in glass containers.
Stainless steel columns packed with Porapak™™ N and molecular sieve maybe used for the separation and determination of micro-quantities of formic, acetic, propionic, isobutyric, butyric, 3-methylbutyric and valeric acids present in biological media as end-products of microbial fermentation.
Silica support allows for use with very organic solvents (no shrinking/swelling). Excellent capacity (0.8 meq/g) for cleaning up solution phase combinatorial chemistry reactions (removing target molecules from reaction by-products and excess reagents).
High purity grade silica gel offers the lowest moisture content, tightest particle size distribution, minimal impurities and greatest lot-to-lot consistency which results in greater reproducibility of the separation process.