The OligoWorks SPE Macroplate (96-deepwell filter plate - 1.2 mL well volume) contains 60 mg/well of OligoWorks SPE WAX Sorbent. 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.