DNA ladder

50bp (50-500bp, 8 band)

+ 50bp (50-1000bp, 13 band)

100bp (0.1-1.5kb, 11 band)

+ 100bp (0.1-3.0kb, 14 band)

1KB (0.5-10kb, 10 band)

+ 1KB (0.1-10kb, 15 band)