Ammonium – sulfonic acid modified silica phase for SPE
Features
- Base material silica, pore size 60 Å, particle size 45 µm, specific surface 500 m2/g
- zwitterionic polar phase with ammonium – sulfonic acid modification, carbon content 7 %, pH stability 2-8
- Polar analytes are more strongly retained than nonpolar compounds. This behavior is inverse (orthogonal) to RP materials like, e.g., CHROMABOND® C18 ec.
Recommended application: polar organic acids and bases, polar natural compounds, nucleosides, oligonucleotides, amino acids, peptides, water-soluble vitamins