Name: YMC-Pack Diol-NP
Description:The YMC Diol-NP stationary phase is a versatile alternative to silica for normal phase separations. The bonded layer's-OH groups provide good selectivity without excessive retention, since hydrogen bonding with the Diol-NP layer is not as strong as one with the silanols on a bare silica surface.
Name: YMC-Pack Polyamine II
Description:YMC-Pack Polyamine II is a silica-based packing bonded with polyamine. It is particularly useful for separation of sugars. The column life of YMC-Pack Polyamine II in aqueous mobile phase is longer than conventional silica-based amino columns, and thus is applicable to separation of oligosaccharides using mobile phase with relatively higher water content. In addition, YMC-Pack Polyamine II can be used to separate ionic compounds with a combination of normal-phase mode and weak anion exchange mode.
Name: YMC-Pack PVA-Sil
Description:YMC-Pack PVA-Sil, bonded with a monomolecular polymer coating of vinyl alcohol(PVA), completely covers both external and internal surfaces of the silica support, protecting it against aggressive, high pH buffers and solvents. The PVA polymer shell on PVA-Sil deactivates the silica support while roviding a hydrophilic surface.