The innovative EASYspin plus system is ideal or rapid purification of genomic DNA-free total RNA from animal cells or tissues. The unique genomic DNA clearance columns effectively remove genomic DNA from RNA samples. No DNase digestion step is required. The purified total RNA can be directly used for reverse transcription and RT-PCR. The whole precess is phenol/chloroform-free. The unique lysis buffer immediately lyses biological samples and inactivates RNase and DNase. The lysate containing RNA is then passed through a genomic DNA clearance column, where genomic DNA binds to the column membrane, and RNA remains in the flow-through. Ethanol is added to the flow-through to provide appropriate binding conditions for RNA, and RNA selectively binds to the silica-membrane of the RNA column in the high-salt buffer. RNA is purified through a series of wash-spin steps to remove protein followed by elution of RNA from silica-membrane with RNase-free H2O.