The Prestained Protein Ladder (8.5-180kDa) is widely used in molecular biology and biochemistry laboratories for protein analysis. It serves as a reference marker in SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis) to estimate the molecular weights of unknown proteins. The prestained bands allow researchers to monitor the progress of electrophoresis in real-time, ensuring accurate separation and analysis. This ladder is particularly useful for Western blotting, as the prestained proteins transfer to membranes alongside target proteins, providing a visual guide for protein transfer efficiency and molecular weight determination. Its broad range (8.5-180kDa) makes it suitable for analyzing a variety of proteins, from small peptides to larger polypeptides. Additionally, the distinct colors of the prestained bands enhance clarity and precision in interpreting gel and blot results.