xPure™ SPRI Beads base on SPRI（Solid phase reverse immobilization）method , suitable for simplifies nucleic acid size selection and PCR purification for DNA and/or RNA library preparation for Next Generation Sequencing. It is compatible for with mainstream NGS library constraction kits. xPure™ SPRI Beads could be the best choice for DNA purification and size selection , effective reduce the experiment cost.