Hydranautics Nitto – RO Membranes – Composite Polyamide – CPA7 – CPA7 MAX

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Ultrapure water is essential in several industrial applications. CPA RO membranes are regarded as the industry standard for all critical high purity applications – from pharmaceutical to power industry.

CPA lines of spiral-wound RO membranes are available in a variety of sizes and deliver unmatched performance with the highest salt rejection rates for brackish water applications. High throughput, efficiency and cost-effectiveness make CPA membranes the best high-rejection brackish water RO membranes in the industry.

Because of its exceptionally high salt rejection, CPA membranes are used in power generation, pharmaceutical, electronics and semiconductor industry.

The CPA7 series are the newest CPA brackish water RO membranes offering the highest salt rejection in the industry. These ultra-high rejection RO membranes are meant to fulfil your purest water quality requirements.

Where ultra-high purity water is required under difficult water conditions, the CPA7 membranes supply the best combination of high rejection and high flow capability in a brackish water RO element, compared to all commercial brackish water RO elements

The LD variant of these membranes using LD Technology are available in 4” (CPA7-LD-4040) and 8” (CPA7-LD) diameters. The CPA7 MAX membrane has an active membrane surface area of 440 ft2 (40.9 m2) which reduces capital costs by requiring fewer pressure vessels and lesser floor space.






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Manufacturer Hydranautics Nitto
Series Composite Polyamide
Model Number CPA7
Part Number CPA7 MAX
Description Diameter - 8"
Length - 40"
Permeate Flow - 12,600 gpd
Salt Rejection - 99.8%
Test Conditions -
1500 ppm NaCl solution
225 psig Applied Pressure
77 F Operating Temperature
15% Permeate Recovery
6.5 - 7.0 pH Range

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