CitriSurf®

Passivating stainless steel with citric acid

CitriSurf® is a citric-acid-based cleaning and passivation solution for industrial applications. It safely and environmentally responsibly removes free iron from the surface of stainless steels, creating important conditions for corrosion-resistant, reproducible stainless-steel surfaces.

The short path to the right solution

Service

We work on your solution

For 20 years, we have gained experience with a wide range of applications in stainless-steel passivation. CitriSurf® products always include individual consulting. We help identify the causes of rust problems, plan passivation systems and validate passivation processes. Appointments for personal on-site consulting can be arranged at any time. We work with a high-performance and experienced metallurgical laboratory in the USA and several laboratories in Europe in order to answer all customer inquiries on a scientifically sound and competent basis. Our technical hotline is available to you at any time.

Service

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Thank you. Your CitriSurf team

Videos

CitriSurf®: process reliability at a glance

Our videos show the standards-compliant application of CitriSurf for efficient rust removal and passivation according to ASTM A967. See for yourself this environmentally responsible alternative to aggressive acids for process-reliable surface finishing. Follow step by step how to ensure the highest quality standards in your production.

CitriSurf process plant

In plant engineering, rust can suddenly appear even though nothing seems to have changed in the manufacturing process or materials. How can this happen?

Many customers from plant engineering contact us because their components arrive at the customer already corroded or start to rust on site. The unpleasant consequences are complaints and additional costs, especially for companies exporting abroad. A good reputation can quickly be at risk.

At the same time, higher-grade stainless steels often cannot be used for cost reasons. As a result, product quality and durability suffer.

Our service

We first analyze together where the problems occur and then recommend the right citric-acid passivation process for the components. This enables our customers to get corrosion problems under lasting control without having to switch to more expensive stainless steels.

In many cases, we can also avoid the need to outsource passivation. This significantly reduces costs and time. Our process can be integrated into almost any operation without major effort.

If you have a similar problem, we will be happy to help you develop and establish an individually adapted passivation process.

The short path to the right solution

CitriSurf® shows how stainless steel surfaces can be reliably passivated without relying on aggressive acids.

The process supports stable and reproducible surfaces and, depending on the application, can be a safe and economical alternative during ongoing operations.

Our service

We review the requirements of your components, materials and processes with you and recommend the appropriate CitriSurf® solution accordingly.

This results in a technically robust process that can be integrated into your production.

The short path to the right solution

For many industrial applications, not only the result matters, but also the verifiability of the process.

The video shows how validation and process reliability can be considered together in passivation.

Our service

We support you in designing and documenting suitable passivation processes and help coordinate them with relevant quality requirements.

This turns a chemical treatment into a traceable and robust production step.

The short path to the right solution