X-tractor Gene Consumables The Xtractor Gene Consumables provides fully automated viral nucleic acid purification on the QIAxtractor when used with the Reagent Pack VX (#950207), and gDNA purification when used with the Reagent Pack DX (#950107). The combination of reagents and plasticware enables purification of viral nucleic acids from liquid samples, with a throughput of 8-96 samples per run.