The dual function  Western  Protein Marker is a ready-to-use mixture of ten IgG-binding proteins. It is used as protein size markers in immuno-detection in Western blot on on film or by CCD imaging. It offers a broad coverage of protein sizes ranging from 15 kDa to 200 kDa.Additionally the Western Protein Marker contains four pre-stained proteins markers of 10, 25, 45 and 70 kDa, which makes very easy and convenient to monitor the protein separation SDS-PAGE, to verify the Western transfer efficiency on membranes, and to estimate the protein size of experimental samples.The Western  Protein Marker can be used for chemiluminescent, fluorescent, chromogenic or other detection systems.Two of the ten bands are enhanced intensity (at 30 kDa and 80 kDa).Storage: Store at -20° C.