Amberlite IRN 78 is widely used in water treatment processes, particularly for demineralization and deionization. It effectively removes dissolved salts and impurities, making it essential in industries that require high-purity water, such as pharmaceuticals, power generation, and electronics manufacturing.

In the pharmaceutical industry, it is utilized for purifying active pharmaceutical ingredients (APIs) and ensuring the quality of water used in drug formulation. Its ability to selectively remove ions makes it valuable in chemical synthesis and catalysis processes.

Additionally, Amberlite IRN 78 is employed in food and beverage production to soften water and remove unwanted minerals, enhancing product quality. Its robust performance and stability under various conditions make it a reliable choice for diverse industrial applications.