What Is an RO Membrane Antiscalant?
An antiscalant or scale inhibitor is a specialized chemical solution used to prevent and control scaling caused by dissolved minerals in water. These chemicals help maintain the performance and efficiency of the water treatment system prior to the RO membrane stage.
What Is Hydrex 4703 – Acid CIP Cleaning Chemical for RO Membranes?
Acid-based CIP (Cleaning-In-Place) chemicals are specially formulated solutions used to clean equipment without disassembly, particularly in RO (Reverse Osmosis) membrane systems, storage tanks, pipelines, and food & beverage processing systems.
Hydrex 4703 is part of the Hydrex 4000 Series developed by Veolia Water Technologies, specifically designed for cleaning and maintaining RO membrane systems.
This product is an acidic cleaning agent, used in CIP procedures to remove scale deposits and accumulated contaminants from the surface of RO membranes. It helps restore membrane performance and prolong the operational lifespan of water filtration systems.

Hydrex 4703 – Acid CIP Cleaning Chemical for RO Membranes
Key Functions
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Removes calcium and mineral deposits:
Acidic components dissolve scale-forming minerals such as calcium and other salts that reduce membrane and equipment efficiency. -
Eliminates odors and microorganisms:
Acidic CIP solutions help neutralize unpleasant odors and eliminate bacteria, mold, and fungi in water systems. -
Maintains system performance:
Routine CIP cleaning with Hydrex 4703 ensures consistent system efficiency and extends the lifespan of filtration and processing equipment.
How Hydrex 4703 Works
Hydrex 4703 is an acid-based industrial cleaning agent used in boiler systems, cooling towers, and other water treatment applications to prevent scaling and control corrosion. Its mechanisms include:
Scale Inhibition
Hydrex 4703 contains active agents that prevent the crystallization of minerals such as calcium, magnesium, and inorganic salts (e.g., calcium carbonate, calcium sulfate, strontium sulfate). These agents keep mineral ions dissolved in water, avoiding the formation of scale on equipment surfaces.
Hardness Reduction
By reducing water hardness, the product limits the formation of scale deposits, especially in cooling systems and heat exchangers.
Dispersing Agents
Hydrex 4703 includes dispersants that prevent fine particles from adhering to surfaces like pipes, heat exchangers, and RO membranes, helping to avoid clogging and fouling.
Corrosion Protection
Beyond descaling, Hydrex 4703 provides protection for metal surfaces by minimizing corrosion caused by chemical agents and harsh operating conditions. Its ability to stabilize pH helps reduce corrosion rates in metallic system components.
Stabilizes pH and Water Chemistry
Hydrex 4703 helps maintain balanced pH levels, preventing the water from becoming too acidic or too alkaline—both of which can accelerate corrosion and damage equipment.
Applications of Hydrex 4703
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Boiler systems: Prevents scale and corrosion, reduces maintenance and operational costs.
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Cooling towers and industrial chillers: Minimizes scaling, ensures cooling efficiency.
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RO membrane systems: Protects membranes from scaling and clogging, maintaining filtration efficiency.
Where to Buy Hydrex 4703 in Vietnam?
Wasol is the official nationwide supplier of Hydrex 4703 – Acid-Based CIP Cleaning Chemical for RO Membranes.
Why Choose Wasol?
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Genuine Products: Trusted source for premium water treatment chemicals.
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Expert Technical Support: Our specialists offer consultation and usage guidance.
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Competitive Pricing: Reasonable prices with loyalty program discounts.
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Nationwide Delivery: Fast and reliable shipping to all regions of Vietnam.
Contact Us to Order Hydrex 4703
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Address: 57/14-16 Tô Hiệu, Phú Thạnh Ward, Ho Chi Minh City, Vietnam
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Phone: (028) 3961 0884 – Hotline: 090 668 8934
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Email: info@wasol-vn.com
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Website: www.wasol-vn.com
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