The Small RNA Marker Easy has five single-stranded RNAs, 20, 30, 40, 50 and 100 bases, which is useful for a research of small RNAs. The 20, 30, 40 and 50 bases are synthesized by chemically (non phosphorylated). The 100 bases is synthesized by in vitro transcription. The Small RNA Marker Easy is supplied in a ready-to-use mixture of loading dye and RNAs (containing formamide, EDTA sodium salt, bromphenol blue). It is manufactured for denaturing polyacrylamide gel electrophoresis. The Small RNA Marker Easy can be visualized by UV light exposure after ethidium bromide staining.