SAX SPE products have silica based sorbents bonded with a quaternary amine. This strong anion exchanger is used to extract compounds capable of carrying a negative charge from both aqueous and non-aqueous solutions. They are ideally suit to extraction of weak acids and desalting of biological macromolecules, like BondElute-SAX.
Based on silica; C%: 9-10%;
Average particle diameter: 50μm;
Average pore size: 60Å;
Volume of pore: 0.8cm2/g;
Specific surface area: 480m2/g
The ion exchange degree: 0.5meq/g.