EZ-Red Protein Blot Staining Solution is a specially formulated Ponceaus S dye-based, Protein Staining Solution. It is specifically useful for membrane staining in evaluation of protein transfer efficiency in Western blot experiments. This Staining Solution is recommended for rapid and reversible protein staining on nitrocellulose or PVDF membranes. The Ponceau S staining is reversible and can be removed with a short incubation in a 0.1% NaOH solution.