MassRuler™ DNA Ladders are specially designed for accurate quantification and sizing of DNA fragments on agarose gels. DNA quantification on gels is sometimes superior to spectrophotometric measurements that do not discriminate DNA, RNA, and nucleotides. The ladders are mixtures of chromatography-purified, individual DNA fragments.

Mass Ruler DNA ladders are available in both low range (LR) and high range (HR) formats. In the forward versions, the mass of each DNA fragment is directly proportional to the fragment size, whereas in the reverse versions, the mass is inversely proportional to the fragment size.

Features:

  • Accurate DNA quantification on gels—DNA amounts of each band are determined spectrophotometrically
  • Ready-to-use—premixed with loading dye
  • Room temperature storage for 6 months
  • Supplied with loading dye for sample DNA

multi-panel gel images of MassRuler™ DNA Ladders

MassRuler™ DNA Ladders selection guide

Range, bp Name Quantity Catalog #
80–1,031 MassRuler™ Low Range DNA Ladder, ready-to-use 2 x 500 µL SM0383
80–10,000 MassRuler™ DNA Ladder Mix, ready-to-use 2 x 500 µL SM0403
100–1,000 MassRuler™ Express LR Forward DNA Ladder, ready-to-use 2 x 500 µL SM1263
100–10,000 MassRuler™ Express Forward DNA Ladder Mix, ready-to-use 2 x 500 µL SM1283
1,500–10,000 MassRuler™ High Range DNA Ladder, ready-to-use 2 x 500 µL SM0393