BioTracker® 6X is a Bromophenol Blue loading dye for agarose and non-denaturing poylacrylamide gel electrophoresis that can be used in conjunction with BioMarker® products in order to provide accurate sizing of dsDNA bands over different ranges. BioTracker® is composed of 60% sterile DI H2O, 30% glycerol, 10% 10X TE, 0.25% BPB dye, and 0.75% SDS.