ZERUST® ZerioGuard® 5 Soluble Corrosion Inhibitor

ZERUST® ZerioGuard® 5 is a water-soluble corrosion inhibitor (SCI) powder engineered for use in hydrotesting applications involving ferrous metals. Designed for the demanding requirements of oil and gas, petrochemical, construction, and manufacturing industries across the Gulf and Middle East region, it provides dependable protection against flash corrosion during and after pressure testing operations.

How It Works

When dissolved in hydrotest water, ZerioGuard® 5 establishes an alkaline environment that acts as a pH buffer throughout the test medium. This alkaline condition neutralises acidic species present in the water — including dissolved carbon dioxide and other corrosive agents — that would otherwise accelerate flash corrosion on exposed ferrous surfaces. The inhibitor forms a protective chemical barrier at the metal interface, suppressing anodic and cathodic corrosion reactions and maintaining metal integrity for the duration of the hydrotest.

Applications

ZerioGuard® 5 is suited to a broad range of hydrotesting scenarios common in Gulf and Middle East industrial operations:

• Pipelines — onshore and offshore oil, gas, and water transmission lines
• Pressure vessels — reactors, separators, and process vessels in petrochemical plants
• Storage tanks — above-ground and underground ferrous storage infrastructure
• Heat exchangers and boiler systems requiring pre-commissioning pressure tests
• Structural steel components and fabricated assemblies undergoing hydrostatic testing

Dosage & Usage

ZerioGuard® 5 is effective at low concentrations, typically in the range of 0.1–1% by volume of the total hydrotest water volume, depending on water quality, system size, and test duration. The powder should be pre-dissolved in a small quantity of clean water before addition to the main hydrotest volume to ensure uniform distribution. Mixing should be performed until the solution is fully clear. Consult the product technical data sheet or contact ZERUST for site-specific dosage recommendations.

Benefits

• Prevents flash corrosion on ferrous metal surfaces during and after hydrotesting
• Alkaline pH buffering neutralises corrosive acidic species in test water
• Effective at low treat rates, reducing chemical consumption and cost
• Easy to dissolve and dose into standard hydrotesting water systems
• Supports compliance with corrosion control requirements in industrial commissioning
• Backed by ZERUST’s proven corrosion inhibition technology

Safety & Handling

Handle ZerioGuard® 5 in accordance with standard industrial chemical safety practices. Wear appropriate personal protective equipment (PPE) including gloves and eye protection when handling the powder or prepared solution. Store in a cool, dry location away from incompatible materials. Refer to the Safety Data Sheet (SDS) for full hazard information, first-aid measures, and disposal guidance before use.