Cleanert COOH SPE products consist of a propyl carboxylic acid on the inner silica surface. The pKa of the carboxylic acid group is approximately 3.8. It is a useful sorbent for quaternary ammonium salt and other strong cations.
Based on Spherical Silica; C%: 5-6%;
Average Particle Diameter: 50 μm;
Average Pore Size: 60 Å;
Specific Surface Area: 600 m2/g.