Used primarily in the field of analytical chemistry, this solution is a key reagent for determining the charge density of polyelectrolytes. It is commonly applied in colloid titration methods to measure the anionic content in various samples, such as water treatment chemicals, papermaking additives, and cosmetic formulations. The solution reacts with cationic substances, allowing for precise quantification of charged groups in polymers. Its stability and consistent performance make it a reliable choice for quality control and research applications in industries where polyelectrolyte characterization is critical.