Proven Excellence in Reformer Catalyst Change-Outs.

At UNIDENSE® Technology GmbH, we help leading companies in the petrochemical and chemical industry achieve safer, faster, and more predictable reformer catalyst change-outs.

• Globally available
• Decades of experience
• Safer, faster, predictable reformer catalyst loading

Through our global network of carefully selected, licensed contractors, we deliver the UNIDENSE® technology under the highest standards of quality, supervision, and technical support. Our team also provides direct execution services, with highly trained staff and specialized equipment, ensuring maximum flexibility and performance for every project.

Our goal is simple: to work with you to secure an optimal reformer catalyst loading that improves the reliability, efficiency, and predictability of your production processes.

Innovation That Keeps You Ahead

We continuously invest in the development of new solutions to extend the value of our services. Our portfolio includes: 

• Intube and Outtube Cleaners – advanced cleaning solutions for improved efficiency
• Pressure Drop (dP) Monitoring – reliable data for optimized operations
• Inspection Services – precise insights to safeguard equipment and performance

By combining proven UNIDENSE® technology with next-generation tools, we ensure your plants operate at peak performance.

The UNIDENSE® technology was originally developed in 1991 by G. Ryntveit at Yara International (formerly Norsk Hydro Agri) in Porsgrunn, Norway. Designed to improve the quality and consistency of primary reformer catalyst loading in ammonia plants, the technology was first presented at the AIChE Conference in San Antonio in 1992 and has since been adopted worldwide.

Since its introduction, UNIDENSE® has been successfully applied to reformer tubes ranging from 2.8" to 6" in internal diameter, across all major catalyst types and sizes. In 2005, with the support of G. Ryntveit, UNIDENSE® Technology GmbH became the global owner and driver of further innovations.