100 bp Blue eXtended DNA Ladder is a pre-mixed, ready-to-load molecular weight marker containing a dye which serves as visual aid to monitor the progress of migration during agarose gel electrophoresis. The DNA Ladder consists of proprietary plasmids which are digested to completion with appropriate restriction enzymes to yield 11 bands suitable for use as molecular weight standards for agarose gel electrophoresis. The digested DNA includes fragments ranging from 100 – 1500 base pairs. The 500 bp fragment and the 1000 bp fragment are present at increased intensity to allow easy identification. All fragments are blunt-ended.