720025.46

NUCLEOSIL® standard silica phases for HPLC

Features

NUCLEOSIL® is a family of totally porous spherical silicas with a very pure and uniform SiO2 structure

• Wide acceptance as routine packings for very different fields of chromatography
• One of the first spherical silicas used in HPLC
• Developed in the early seventies, it became a world-renowned HPLC packing
• Still found in many analytical and preparative applications
• An absolutely reliable choice in HPLC
• The largest variety of modified HPLC silicas available on the market

NUCLEOSIL® NH2 / NH2 RP - Amino modified silica phases for HPLC

Features

• Polar aminopropyl modified silica for reversed phase and normal phase chromatography:                                                                      Normal phase chromatography with hexane, dichloromethane or 2-propanol as mobile phase for polar compounds such as substituted anilines, esters, chlorinated pesticides                                                                                                                                       Reversed phase chromatography of polar compounds like carbohydrates in aqueous-organic eluent systems                           Anion exchange chromatography of anions and organic acids using common buffers (e.g., acetate or phosphate) in conjunction with organic modifiers (e.g., acetonitrile)
• Available pore sizes 100, 120 and 300 Å, available particle sizes 3 µm, 5 µm, 7 µm and 10 µm,
• pH stability at 20 °C: 2–8, carbon content 3.5 %
• Separation mechanism based on polar interactions, hydrophobic interactions and weak ion exchange interactions