The OXGEN Prestained Protein Marker is a mixture of purified proteins covalently coupled to a blue dye, except for two reference bands (one green and one red band at 25 kDa and 75 kDa respectively). The protein concentrations are carefully balanced for even intensity. For SDS-PAGE gels
reference: LADD-PR1-500, package: 500 ?l, description: 5 - 245 kDa, 13 bands, pcs/pack: 1