PURE Bioscience, Inc. (OTCQB: PURE) (“PURE” or the “Company”), the developer of the patented, non-toxic antimicrobial silver dihydrogen citrate (SDC), is proud to announce a breakthrough application method for membrane treatment in the dairy and beverage processing industries. Leveraging the power of its flagship product, PURE® Hard Surface, the company is tackling persistent challenges associated with membrane fouling, sanitization, and overall maintenance. This innovative approach not only enhances operational performance but does so in a way that is safe, sustainable, and remarkably cost-effective.
The new application method of PURE Hard Surface introduces a powerful, single-step treatment designed to rejuvenate membranes used in critical filtration systems, including reverse osmosis (RO) and ultrafiltration (UF) systems. Membrane fouling has long been a significant concern in dairy and beverage operations, often leading to decreased throughput, compromised product quality, and increased maintenance costs. With this advanced solution, operators can restore flow, thoroughly sanitize systems, and prolong membrane lifespan—all without causing oxidation or compromising structural integrity.
Innovation Driven by Industry Needs
Tom Myers, Executive Vice President of Technology and Development at PURE Bioscience, emphasized the transformative potential of this technology:
“The introduction of PURE Hard Surface to the dairy and beverage industry represents a significant advancement in membrane treatment technology. This product delivers unmatched efficiency and enhances filtration operation and longevity.”
The company’s solution meets multiple needs with just one application—offering superior cleaning and sanitization without requiring secondary treatments or additional chemical processes.
Key Features and Benefits of PURE® Hard Surface for Membrane Treatment
1. One-Step Treatment Without Trade-Offs
PURE Hard Surface is designed to deliver high-performance cleaning and sanitization in a single treatment. Operators can restore optimal membrane throughput while preserving the membrane’s functional integrity, eliminating the need for more aggressive, damaging chemical alternatives.
2. Rapid and Proven Efficacy
This advanced treatment demonstrates fast, verifiable results. Tests have shown an exceptional 4+ log microbial reduction within just 120 seconds. Additionally, PURE Hard Surface is NSF-listed, making it safe for use in food processing environments, particularly in applications that require sanitation of sensitive components like membranes.
3. Fast Penetration and Complete Restoration
In field applications, PURE Hard Surface has shown complete membrane penetration within five minutes for RO systems. The formula effectively removes fouling buildup, restoring membrane function and water flow. In UF systems, operators observed near-immediate restoration of throughput, coupled with comprehensive sanitization that meets the strictest quality control standards.
4. Simple, Ready-to-Use Format
Unlike many traditional treatments that require dilution, mixing, or specialized handling, PURE Hard Surface arrives in a ready-to-use form. Operators simply fill the system and begin the treatment—no need for complex preparation or additional training. With the lowest possible EPA toxicity rating (Category IV), the product requires no personal protective equipment (PPE), making it safer for personnel and easier to incorporate into daily workflows.
5. Environmentally Friendly
PURE Hard Surface is environmentally responsible, offering complete efficacy without compromising wastewater systems. It is safe for downstream biological treatment processes, posing no threat to digesters or violating discharge permit regulations. This allows manufacturers to maintain both environmental compliance and operational integrity.
6. Cost-Effective and Operationally Efficient
A single application of PURE Hard Surface can restore system performance and enable the continued sale of high-quality, full-priced finished products. By reducing downtime, minimizing the need for replacement membranes, and lowering chemical usage, the treatment drives down operational costs while supporting long-term equipment performance.
Tim Steffensmeier, Vice President of Sales at PURE Bioscience, highlighted the practical advantages for industry stakeholders:
“Our SDC technology is redefining what’s possible in the food industry – and PURE Hard Surface is at the forefront. This modern membrane application brings a smarter, more efficient approach to streamlining operations, delivering measurable cost savings, and empowering manufacturers to uphold the highest quality standards without the negative trade-offs of traditional chemistry.”
Learn More and See It in Action
PURE Bioscience is inviting interested professionals to explore the benefits of its new membrane treatment solution at the upcoming Dairy Foods Membrane Technology Forum, taking place June 2–4, 2025, in Bloomington, MN. Attendees will be able to engage with company representatives, see demonstrations, and gain insights into the real-world performance of PURE Hard Surface.
Additional information is available at , and inquiries can be directed to PURE Bioscience or any of the company’s certified distribution partners.
The Science Behind SDC: A Unique Dual-Action Antimicrobial
At the heart of PURE Hard Surface’s effectiveness lies SDC—silver dihydrogen citrate—a patented antimicrobial technology developed by PURE Bioscience. SDC operates through a powerful dual-action mechanism that rapidly neutralizes a wide range of pathogens:
- Protein Disruption at the Surface Level
The silver ion in SDC interacts with microbial membrane proteins, deactivating their function and disrupting the microbe’s structural integrity. This immediate action compromises the microbe’s defenses and initiates cell death. - DNA Interference Inside the Cell
Unusually, microbes mistake the silver citrate complex for a nutrient, enabling the silver ion to enter the organism. Once inside, the silver ion denatures the DNA, effectively halting replication and rendering the microbe incapable of survival or reproduction.
This dual mechanism ensures a swift and comprehensive kill rate across a broad spectrum of bacteria, viruses, and fungi. Unlike traditional silver-based disinfectants that have a short shelf life—often lasting just hours or days—SDC is a stabilized silver ion complex. Its innovative chemical structure ensures long-term stability, offering a shelf life of several years, while maintaining exceptional bioavailability and effectiveness.
Setting a New Standard for Membrane Hygiene
PURE Bioscience continues to lead the way in next-generation sanitation technology. With the introduction of PURE Hard Surface for membrane treatment, the company is offering a much-needed solution to a widespread industry problem—membrane fouling—without introducing environmental or occupational safety risks. The product’s unique combination of efficacy, simplicity, and sustainability makes it a powerful asset for dairy and beverage producers looking to enhance quality, improve efficiency, and extend the life of critical infrastructure.
As industries grow more focused on hygienic processing, operational sustainability, and regulatory compliance, PURE Bioscience stands ready with innovative solutions like SDC and PURE Hard Surface, helping to build a safer and more efficient future in food and beverage production.
