The application dimension of the Membrane Separation Materials market is the primary driver of revenue distribution, with each end‑use sector contributing a distinct share to the total market size. Water treatment remains the largest segment, accounting for roughly 40 % of global demand, driven by municipal and industrial desalination, wastewater reclamation, and stringent effluent standards. Gas separation follows at 25 %, propelled by natural gas sweetening, CO₂ capture, and hydrogen purification projects that require high‑selectivity polymeric and inorganic membranes. The food and beverage sector contributes about 15 %, where membrane technology supports dairy filtration, juice clarification, and beverage sterilization, emphasizing product safety and shelf‑life extension. Pharmaceuticals represent 12 % of the market, reflecting the need for aseptic processing, sterile filtration, and active pharmaceutical ingredient (API) recovery, where membrane integrity and regulatory compliance are critical. Finally, chemical processing accounts for the remaining 8 %, encompassing petrochemical separations, catalyst recovery, and specialty chemical purification. This application‑focused breakdown underpins the overall market valuation and informs strategic investment across the value chain, illustrating the breadth of the Membrane Separation Materials segmentation.