RNase-Free DNase Set. For DNase digestion during RNA purification. Kit contents: Qiagen RNase-free DNase Set, 50 preps, For DNase Digestion During RNA Purification, Silica-gel Membrane, Spin-column Technology Efficiently Removes the Majority of the DNA Without DNase Treatment, The Buffer is Also Well-suited for Efficient DNase Digestion in Solution, Includes 1500U RNase-free DNase I, RNase-free Buffer RDD and RNase-free Water.