Simple Installation in All Models RO purification membranes are capable of successfully eliminating harmful minerals, heavy metals, and other soluble salts from water. It also has a constant rejection rate and a high penetrated flow. Upgrade your water purification system with the Necotech 100 GPD RO Membrane, designed to deliver clean, safe, and great-tasting water for your home or business. With 97% salt rejection efficiency, this high-performance blue membrane ensures superior filtration, effectively removing dissolved salts, heavy metals, and other harmful contaminants. Universally compatible with all standard RO water purifiers, it's the ideal replacement membrane for consistent performance and long-lasting durability.