The Tris-Glycine PAGE Gel Kit (15%, Speedy) is widely used in molecular biology and biochemistry laboratories for protein separation and analysis. Its primary application is in SDS-PAGE (Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis), a technique essential for studying protein molecular weights and purity. The 15% gel concentration is ideal for resolving small to medium-sized proteins, typically in the range of 10-100 kDa, making it suitable for analyzing peptides, enzymes, and other low-molecular-weight proteins. This kit is particularly valued for its speed, enabling researchers to perform electrophoresis in a shorter time frame without compromising resolution. It is commonly used in Western blotting, where proteins separated on the gel are transferred to a membrane for further detection using antibodies. Additionally, it is employed in protein purification workflows to assess the efficiency of purification steps and in quality control to verify the integrity of protein samples. Its ease of use and consistent performance make it a reliable tool for routine protein analysis in research and diagnostic applications.