The Prism Protein Marker contains 6 purified proteins stained orange, blue, violet for easy molecular weight estimation of samples. The bands ranging from 19 to 130 kDa can simplify monitoring protein migration during electrophoresis, subsequently assess protein transfer efficiency to a blotting membrane. Prism Protein Marker is ready-to-load may be applied to lab-prepared commercial pre-cast gels. Sufficient material for 50 - 100 lanes.