Nanostone Launches CUF|Flow

A PFAS-free ceramic UF breakthrough that redefines cost and footprint economics in municipal and industrial water.

Acuriant Technologies Inc. today announced the global launch of CUF|Flow, the newest high-capacity ceramic ultrafiltration (UF) module in its Nanostone brand portfolio. The company is presenting CUF|Flow this week at the Innovation Driven Water Sustainability Conference (IDWS 2025), held in Jeddah, Saudi Arabia. Where Nanostone began 2025 with its proven CUF|Shield ceramic UF module, it now offers a distinct three-module portfolio engineered to tackle challenging water and maximize limited space, redefining what operators can accomplish with ceramic UF.

“2025 has been a transformative year for Acuriant and our Nanostone brand,” said Jürgen von Hollen, CEO of Acuriant Technologies Inc. “From one to three products in a single year reflects the Nanostone brand mission: Water Can’t Wait. Neither Can We. Driven by customer demand and our innovation engine, CUF|Flow delivers a step-change in capacity and efficiency, adding 40 percent more membrane surface area, achieving higher throughput in the same footprint, lowering lifecycle cost, and reducing its environmental impact. It fundamentally changes what utilities and industries can expect from ceramic UF, evidence of our commitment to lead the field of filtration and separation technologies.”

A PFAS-Free Step Forward in Ceramic Ultrafiltration
Nanostone membranes are PFAS-free, giving owners and operators a future-proof foundation for treatment systems increasingly scrutinized for PFAS exposure. CUF|Flow is built for a new generation of municipal and industrial water challenges driven by variable raw water, regulatory pressure, and footprint limits.

More Water. Same Footprint | Same Water. Smaller Footprint.
CUF|Flow incorporates 40% more active membrane surface area in the same housing as Nanostone’s proven CUF|Shield module. This enables two deployment approaches:

• Capacity-first: up to ≈40% more water output from the same rack.
• Efficiency-first: ≈29% fewer modules for the same output, reducing racks, valves, interconnects, and structural steel, which lowers Total Installed Cost (TIC) and embodied carbon.

A Portfolio Built for Today’s Increasingly Variable Water Conditions
Nanostone, Acuriant’s brand for ceramic UF, now delivers a complete PFAS-free ceramic UF portfolio that addresses the full range of municipal and industrial water conditions:

• CUF|Flow: high-capacity solution for low-to-moderate solids.
• CUF|Shield: protective solution for high-solids and fouling-prone sources.
• CUF|ShieldPlus: high-performance ceramic UF for complex or chemically aggressive industrial streams such as microelectronics, pharma, and specialty manufacturing.

“CUF|Flow prompts a rethink of water-treatment economics,” continued Jürgen von Hollen. “It expands how projects can be conceived, turning space constraints into opportunities and redefining longstanding assumptions about cost per cubic meter, footprint design, and lifecycle economics. Equally important, our pace of innovation should not be mistaken for a product-only focus. Acuriant is solutions-focused, applying deep application know-how with customers worldwide across our core applications.”

About Acuriant Technologies Inc.
Acuriant Technologies Inc. is a global leader in advanced separation and filtration solutions, uniting the strengths of Nanostone for ceramic UF and Solecta for polymeric membrane separation. Under its Nanostone brand, Acuriant delivers high-performance ceramic UF membranes used in municipal drinking water, surface water treatment, wastewater reuse, desalination pretreatment, and industrial process and reuse applications across sectors such as power, mining, semiconductor and microelectronics, pharmaceuticals, and food & beverage. Headquartered in Boston with operations across the U.S., Europe, and Asia Pacific, Acuriant supports customers in addressing some of the world’s most complex water and process challenges.