Ready-to-use Quantitative Highly Stable Precise Ten discrete fragments from 100 bp to 1000 bp Higher intensity reference band at 500 bp The Norgen PCRSizer 100 bp DNA Ladder is prepared to ensure quality and batch-to-batch consistency. Our PCRSizer contains ten discrete fragments ranging from 100 bp to 1000 bp in 100 bp increments with a higher intensity reference band at 500 bp. This Ladder is ideal for PCR product size confirmation. Contents: 1mL of premixed DNA ladder (0.5µg/10µL) in loading buffer (10mM EDTA, 10% glycerol, 0.015% bromophenol blue, and 0.17% SDS) .