5-mL tubes while in the magnetic stand for 5 min, then clear away the buffer using a pipette and clean the beads 2× with 500 μL of clean eighty% ethanol. Right after the second clean, clear away all ethanol and make sure that no ethanol is left during the samples. https://magneticbeadsrnaisolation59369.bloggazzo.com/29085138/the-fact-about-rna-extraction-kit-that-no-one-is-suggesting