The QKGEN® rRNA Depletion Kit uses RNase H digestion to remove cytoplasm ribosomal RNA(5S rRNA, 5.8S rRNA, 18S rRNA and 18 s RRNA) from 100 ng-1 ug Total RNA 28S rRNA) and mitochondrial ribosomal RNA(12S rRNA and 16SrRNA), retained mRNA and other non-coding Rnas. The obtained products are suitable for RNA library, random-primer cDNA synthesis and other experiments.