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Sorbents for the MSPE technique are chosen to cover the widest possible field of applications. MSPE SpeExtra C18 is a hydrophobic type of octadecyl silica gel with a special endcapping. It is suitable for a wide range of analytes, showing lower retention for polar compounds. MSPE SpeExtra C18-P is a polar modified monomeric octadecyl silica gel. It offers different types of interactions: dipole-dipole, π-π and hydrophobic. It is therefore suitable for aromatic and polar compounds. MSPE SpeExtra HLB polymer sorbent with high specific surface area and special endcapping. It has a hydrophilic and lipophilic modification ensuring universal use and a higher capacity than C18 silica gel. MSPE SpeExtra WAX is a PS/DVB-based polymer sorbent with special end-capping and a highly specific surface, which is prepared by copolymerization of styrene and divinylbenzene, creating weak anionic interactions.
MSPE sorbent | Particle size [µm] | Specific surface area [m 2 /g] |
C18 | 60 | 310 |
C18-P | 60 | 310 |
HLB | 30 | 850 |
WAX | 30 | 850 |