DNAmark™ 20bp Ladder consists of 13 fragments ranging from 60-300 base pairs (bp). This molecular weight marker is specially designed for identifying small DNA fragments and allowing for quantitative estimation of the DNA fragments in the gel at the same time. The 100bp and 200bp fragment are present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5µl loading, all fragments, except 100bp and 200bp, are 40ng. The 100bp and 200bp fragments are 100ng. This ladder is pre-mixed with loading dye and is ready to use.