MapMarker 1000 contains 23 discrete DNA fragments ranging in size from 50 to 1000 base pairs labeled with X-Rhodamine at 8fmol/Band/ul. The fragments are 50. 75, 100, 125, 150, 200, 250, 300, 350, 400, 450, 475, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950 and 1000 base pairs.MapMarker DNA sizing standards are sets of high quality fluorescently labeled DNA fragments designed to provide accurate base calling and precision sizing of samples with consistent intensities and migration patterns. They are compatible with the most commonly used fluorescent-based separation instruments systems, including capillary-based gel electrophoresis genetic analysis systems.MapMarker standards are stable for a minimum of 18 months when stored in the dark at 4C.