The Agilent Small RNA kit focuses on quality control of microRNA (miRNA) and small RNA. Analysis of small RNA is essential for downstream applications such as small RNA next-generation sequencing (NGS) libraries. The Agilent Small RNA ladder includes seven fragments ranging from 15 to 200 nt, providing quantification and sizing of small RNA and miRNA. Focusing on a narrow range of 200 nt magnifies the individual areas of miRNA (10 to 40 nt) and small RNA (40 to 200 nt), allowing for high separation resolution and detailed analysis of each region.