Blog | Inox Passivation / Derouging stainless steel

Understanding Rouge Formation In Iron Contaminated Water And Its Risks

Close-up of iron-contaminated water showing reddish rouging deposits inside industrial piping, highlighting the risks of rouge formation.

Rouge—a reddish-brown or black deposit that can form on stainless steel surfaces when exposed to iron-contaminated water—is a particularly concerning phenomenon in industries that rely on high-purity water systems. Derouging stainless steel is a highly effective way to protect equipme …

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Rouge Types: What Are The Three Main Classes Of Rouge?

Pipes in a factory after underoing the derouging stainless steel.

Stainless steel tubes and applications can sometimes develop rust-coloured surface corrosion, or rouge, under certain conditions. Removing this corrosion – or derouging stainless steel– is crucial for preventing damage to your systems and equipment and maintaining product safety, as u …

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Derouging Your Steam Autoclave Machines

Before and after derouging a steam autoclave machine from rouge formation

Rouge, a reddish-brown oxide film, is commonly classified into three types. This article specifically addresses the formation of rouge within steam autoclave machines and explores effective derouging methods to eliminate it.

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Rouging and Derouging: Stainless Steel Chemical Cleaning

Results achieved using pH neutral derouging chemicals.

Rouge is made up of a variety of iron oxides (rust). It is important that corrosion products (rust or rouge) are not present in your manufacturing and distribution systems, tanks or equipment.

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Rouge: What is it?

Derougign and passivation treatment before and after

Rouge is a common problem in pharmaceutical facilities, most often found in high-purity water and clean-steam systems fabricated in austenitic stainless steel.

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