Nanostone Launches CUF|Flow™ to Expand Its PFAS-Free Ceramic UF Portfolio

Boston, MA — December 9, 2025 - Nanostone Water has officially launched CUF|Flow™, the newest ceramic ultrafiltration (UF) module in its product lineup, offering a step-change in capacity, efficiency, and sustainability for municipal and industrial water treatment. The module is being presented this week at the Innovation Driven Water Sustainability Conference (IDWS 2025) in Jeddah, Saudi Arabia.

Building on the success of the CUF|Shield™ module earlier this year, Nanostone now offers a three-module portfolio that is engineered to tackle challenging water conditions, maximize limited space, and deliver higher performance than ever before.

“2025 has been transformative for Nanostone and Acuriant,” said Jürgen von Hollen, CEO of Acuriant Technologies Inc. “Growing from one product to three in a single year reflects our mission: Water Can’t Wait. Neither Can We. CUF|Flow™ delivers a 40% increase in membrane surface area, enabling higher throughput in the same footprint, lowering lifecycle costs, and reducing environmental impact. It fundamentally changes what utilities and industrial operators can expect from ceramic UF, showing our commitment to leading filtration and separation technologies.”

A PFAS-Free Step Forward in Ceramic Ultrafiltration

CUF|Flow™ is completely free of PFAS, providing operators with a future-proof option as regulatory scrutiny on these substances continues to increase. The module is designed for a new generation of water treatment challenges driven by variable raw water, regulatory pressure, and footprint constraints.

More Water. Same Footprint | Same Water. Smaller Footprint

CUF|Flow™ incorporates 40% more active membrane surface area within the same housing as the proven CUF|Shield™ module. Operators can deploy it in two ways:

• Capacity-first: Achieve up to 40% more water output from the same rack.
• Efficiency-first: Reduce the number of modules by approximately 29% for the same output, cutting racks, valves, interconnections, and structural steel. This approach lowers Total Installed Cost (TIC) and reduces embodied carbon.

A Complete Portfolio for Every Water Scenario

With the launch of CUF|Flow™, Nanostone now offers a complete PFAS-free ceramic UF portfolio for a wide range of municipal and industrial water conditions:

• CUF|Flow™: High-capacity solution for low- to moderate-solids water.
• CUF|Shield™: Protective module for high-solids or fouling-prone water sources.
• CUF|ShieldPlus™: High-performance ceramic UF for chemically aggressive or complex industrial streams, including applications in microelectronics, pharmaceuticals, and specialty manufacturing.

“CUF|Flow™ encourages a rethink of water-treatment economics,” von Hollen continued. “It turns space limitations into opportunities and reshapes assumptions about cost per cubic meter, footprint design, and lifecycle economics. Our innovation pace should not be mistaken for a product-only focus—Acuriant is solutions-driven, applying deep application expertise alongside customers across the globe.”

About Nanostone Water

Nanostone is a leading provider of advanced ceramic-based filtration solutions designed to remove suspended solids and pathogens from even the most challenging waters. The company’s reliable, robust, and cost-effective processes significantly reduce land and environmental footprints. Operating an automated state-of-the-art module manufacturing plant in Germany, Nanostone serves global desalination, municipal water treatment, and industrial water treatment markets through commercial offices in Asia, the Middle East, Europe, and the U.S.

For more information, please contact:

Rob Boogaard

Email: Rob.Boogaard@nanostone.com

Nanostone Water, Inc.

One Marine Park Drive, Suite 1410

Boston, MA 02210, USA

Email: info@nanostone.com

Website: www.nanostone.com