New Products     News/PR     Calendar of Events     HPLC Columns     Process Media     Process Development Products     Customer Service     Technical Support     Sales&Marketing Teams     Distributors     Locations     About Tosoh Bioscience     Trademarks     ISO 9001:2000 Certification     Feedback     HPLC Database     Literature     Home     What's New     Products     Service/Support     About Us     Literature/Applications     Impressum     Sitemap     Search   Tosoh Bioscience GmbH: The Chemistry of Innovation Normal Phase / Hydrophilic Interaction  In this section TSKgel NH2-100 Related Links Reversed Phase Hydrophilic Interaction TSKgel Amide-80 TSKgel Amide-80 References TSKgel NH2-100 Size Exclusion Ion Exchange Hydrophobic Interaction Affinity The new TSKgel NH2-100 amino columns expand the selectivity range of TSK-GEL HILIC solutions. It is well suited for all separations requiring amino functional groups. In contrast to conventional silica-based amino phases it offers expanded stability under HILIC conditions, the prerequisite for high reproducibility and reliable results. TSKgel NH2-100 is suited for the analysis of all types of hydrophilic compounds like carbohydrates, vitamines or polar metabolites. The NH2-100 HILIC phase is based on a 3 µm silica particle with 100 Å pores, which is treated with a special endcapping procedure. Aminoalkyl groups are introduced step wisely after endcapping. The amino groups act as HILIC functional groups without any peak splits. Due to a high ligand density and large surface area TSKgel NH2-100V 3 µm columns show high retention for very polar compounds.  Structure:    Product Attributes: Pore size (silica): 100 Å Particle size: 3 μm  pH stability: 2.0 - 7.5 Functional group: Aminoalkyl Max. temperature: 80 °C (50°C for 3 µm)  Literature: TSK-GEL HILIC Brochure Application Note - Alternate selectivity for polar compounds in HILIC Operating Conditions and Specifications TSK-GEL NH2-100  Application Comparison of selectivity. Separation of water soluble vitamins on a TSKgel Amide-80 and TSKgel NH2-100 column Columns:        TSKgel NH2-100V 3 μm,                        4.6 mm i.d. × 15 cm L                        TSKgel Amide-80 3 μm,                        4.6 mm i.d. × 15 cm L Peaks:            1 = nicotinamide; 2 = vitamin B2;                        3 = pyridoxine; 4 = nicotinic acid;                        5 = vitamin C; 6 = vitamin B1;                         7 = vitamin B12 Mobile phase: 25 mM phosphate buffer                        (pH 2.5) / ACN = 30/70 Flow rate:      1 mL/min Temperature:  40 °C Detection:       UV @ 254 nm Ordering information: To place an order please contact Customer Service.  P/N Description Pore size Particle size Dimension 21967 TSKgel NH2-100 100 Å 3 μm 2 mm ID x 5 cm L 21968 TSKgel NH2-100 100 Å 3 μm 2 mm ID x 15 cm L 21969 TSKgel NH2-100 100 Å 3 μm 4.6 mm ID x 5 cm L 21970 TSKgel NH2-100 100 Å 3 μm 4.6 mm ID x 15 cm L 21971 TSKgel NH2-100 Guard Cartridge for 2 mm ID columns, 3 pieces/pkg 100 Å 3 μm 2 mm ID x 1.0 cm L 19308 TSK-GEL Guard Cartridge holder for PN 19325 & 21941     2 mm ID x 10 cm L 21972 TSKgel NH2-100 Guard Cartridge for 4.6 mm ID columns, 3 pieces/pkg 100 Å 3 μm 3.2 mm ID x 1.5 cm L 19018 TSK-GEL Guard Cartridge Holder for P/N 21863 & 19010     3.2 mm ID x 15 cm L Printer Friendly Version Quotes/availability Technical support Frequently asked questions -- HILIC Return to main Hydrophilic Interaction page Search the Tosoh HPLC Application Database Tosoh Bioscience GmbH Zettachring 6, 70567 Stuttgart, Germany  Tel: +49-711-132570  Email: info.sep.eu@tosoh.com