The number of bands in this product is 10. The 500bp ladder is ideal for determining the size of double-stranded DNA from 500 to 5,000 base pairs. The ladder consists of 10 linear double-stranded fragments. The 2,000bp fragment is present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5 l loading, all fragments except 2,000bp are 40ng. The 2,000bp fragment is 100ng. This ladder is pre-mixed with loading dye and is ready to use.