CPA5 MAX Hydranautics Nitto 12,000 GPD at 225 PSI 8 x 40 inch 99.7% Rejection Membranes

Hydranautics CPA5-MAX Brackish Water RO Membrane (12,000 GPD, 99.7% Rejection)

The Hydranautics CPA5-MAX is a high-area, 8-inch brackish water reverse osmosis membrane manufactured by Hydranautics, a Nitto Group Company and a globally recognized leader in membrane technology. Built on Hydranautics' proven Composite Polyamide (CPA) platform, the CPA5-MAX sets an industry standard for high-rejection RO elements, delivering minimized biofouling, minimized colloidal fouling, and enhanced cleanability for demanding commercial and industrial water treatment applications.

The defining feature of the CPA5-MAX is its increased 440 square feet of active membrane area — a 10% increase over the standard CPA5-LD element — making it especially well suited for RO polishing stages and low-fouling applications. This larger membrane area allows system designers to achieve the same or greater production capacity with fewer pressure vessels and a smaller equipment footprint, helping to reduce both capital costs and floor space requirements in new or retrofit installations.

Constructed from a composite polyamide thin-film membrane in a spiral-wound configuration, the CPA5-MAX delivers a permeate flow rate of 12,000 GPD (45.5 m³/d) with a salt rejection of 99.7% (99.6% minimum), providing consistently high-purity water for applications such as power generation, industrial wastewater treatment, pharmaceutical manufacturing, semiconductor processing, and water reuse. Backed by Hydranautics' stringent quality assurance testing on every element for every order, the CPA5-MAX offers utility managers and system integrators a dependable, high-throughput solution for challenging brackish water sources.

Specification Table

¹ Stated performance is initial (data taken after 30 minutes of operation) under the standard test conditions listed above. Individual element performance may vary by up to ±15% from stated nominal values.