RNA Marker (20-100nt) is primarily used in molecular biology and genetic research for the analysis and identification of RNA fragments within a specific size range. It serves as a reference tool during gel electrophoresis, allowing researchers to estimate the size of RNA molecules in their samples. This marker is particularly useful in studies involving small RNA molecules, such as microRNAs, small interfering RNAs (siRNAs), or other short RNA transcripts. It aids in quality control by verifying the integrity and size distribution of RNA samples, ensuring accurate downstream applications like RNA sequencing, RT-PCR, or Northern blotting. Additionally, it is employed in optimizing RNA extraction and purification protocols, helping to confirm the efficiency of these processes. Its precise size range (20-100 nucleotides) makes it ideal for applications focused on small RNA analysis, contributing to advancements in gene expression studies, RNA interference research, and diagnostic development.