20-120kDa Mid Range Protein Molecular Weight Marker, Prestained

6 band: 20, 25, 35, 50, 85, 120kDa: Prestained Protein Molecular Weight Marker is a mixture of purified proteins covalently coupled to a blue chromophore. It consists of 6 proteins ranging in apparent molecular weight from approximately 20 kDa to 120 kDa. The protein concentrations are optimized to yield 6 welldefined blue bands after SDS-polyacrylamide gel electrophoresis. Lot-to-lot variation of the apparent molecular weight of prestained proteins is ~5%.