The OligoWorks SPE 1 cc Cartridge is designed for oligonucleotide bioanalysis. The OligoWorks SPE 1 cc Cartridge contain 60 mg of OligoWorks SPE WAX Sorbent per cartridge. The OligoWorks SPE WAX Sorbent is a polymeric reversed-phase, weak anion exchange mixed-mode sorbent, that is oligonucleotide tested and batch-selected for optimal oligonucleotide recovery.