The 1 kb DNA ladder (marker) Plus is ideal for determining double chain DNA sizes between 100 and 10000 base pairs. Ladder Plus contains 15 linear double chain fragments of different sizes. The fragments with 500 and 3000 base pairs have been increased to allow easy identification. All fragments were measured precisely by both chromatography and HPLC method and mixed during production. For 5 µl loading, all fragments, except 500 bp and 3000 bp, are 40 ng, and fragments with 500 bp and 3000 bp are 100 ng. It is pre-mixed with Ladder loading paint and is ready for use.