HOF Enterprise Group

Specialists as sought-after partners for industry

The HOF group of companies, with the companies HOF Sonderanlagenbau GmbH and HOF Prüfsysteme GmbH, has been in the possession of the central Hessian entrepreneur Hans-Georg Hof for several decades. Both companies are specialists in their branch, with their high level of know-how and many new innovative ideas laid the foundation for the high technological competence of the group.

Welcome to HOF

HOF Sonderanlagenbau GmbH has been the leading specialist for manufacturing
individual freeze drying systems, loading and unloading systems
and freezing and thawing equipment for over 30 years.

Focus on your product

Individually designed, planned and manufactured – with state-of-the-art technology

We let knowledge grow

Our know-how is the basis for your success

Communication & media

Knowing what is important



HOF Sonderanlagenbau GmbH
Ludwig-Rinn-Str. 1-3
35102 Lohra

Phone + 49 6462 9169-0
Fax + 49 6462 9169-199


Mornshausen site:

HOF Sonderanlagenbau GmbH
Vor dem Langen Loh 2
35075 Gladenbach-Mornshausen

Phone + 49 6462 9169-0
Telefax + 49 6462 9169-199



HOF and Entegris - Success is no coincidence

Successful collaborations are no coincidence, like this corporate partnership with Entegris Life Science in the field of bulk drug substance and cold storage from the USA. An international provider of robust cold storage and transportation. Entegris is known for its Aramus™ bag, among other things.

The goals of the cooperation include bundling joint technological know-how and successfully utilizing this synergy for customers. The advantages of the cooperation between HOF and Entegris enables pharmaceutical and biotechnological customers to find the best available solution for their individual process and at the same time to benefit from the many years of experience of both specialists.

As part of the partnership, a HOF Freeze-Thaw Unit (FTU) has already been installed at the newly created Life Sciences Technology Center in Billerica (Massachusetts, USA) to enable customers to leverage cold chain expertise, to optimize processes, reduce costs and accelerate time to market.

The world-class lab brings together tools and technologies from both manufacturers in one location where customers can test freeze/thaw equipment to determine which products meet their needs best.

The partnership with Entegris reinforces HOF's expert market leadership and makes it easier for U.S.-based customers to connect with HOF's equipment, gain experience and find their custom solution.

HOF looks forward to a long and successful relationship!

Review of ACHEMA 2022 – innovative – complex and successful!

With the theme of “A safe investment – now and in future, HOF systems are technological leaders”, HOF once again presented itself at this year’s international leading trade fair with many interesting new topics.

The exhibition stand was well frequented not only by existing customers, but also by numerous interested individuals who came to learn about new technologies, discuss new projects or simply to establish a personal contact.

We were particularly delighted with how popular the live presentations of the HOF SIRIUS robot-based loading and unloading system were.

But many discussions also focused on topics such as HOF CryoBlizzard central refrigeration – the new innovative technology that uses air as a refrigerant for freeze drying.

We would like to take this opportunity to thank everyone who visited us at ACHEMA 2022 and are already looking forward to welcoming everyone at the next ACHEMA in Frankfurt am Main from 10 to 14 June 2024.

“We are very satisfied with the feedback and we can see clearly how much our work is appreciated with regard to our innovative know-how.”
Alexander Hof/CEO

The innovative HOF water bath and debottling system

The innovative HOF water bath and debottling system was developed using state-of-the-art robot technology for automated defrosting of frozen plasma bottles, allowing the remaining frozen core and the surrounding liquid to be removed easily for further processing after the bottle has been cut open.

Learn more here and watch our detailed video >

„The HOF water bath and debottling system is a technologically highly innovative solution. Compact, reliable, safe and with state-of-the-art robot technology.“

Dr. Alexander Hof (CEO)

NEW – HOF product brochure

Our new product brochure titled “Technology – knowledge, experience and innovative thinking” contains our complete product range:

  • Freeze drying systems
  • Loading and unloading systems
  • Freeze Thaw Units
  • HOF waterbath & debottling system
  • HOF Customer Service

Among other things, it offers an insight into our role as a technological market leader, combined with topics such as “innovative pioneer” – power of innovation as a brand core, and provides information on our exacting claim “HOF quality is the sum of many success factors”.

The clear structure and design make it easy to find the topics you are interested in.

More >

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