We design and build turnkey laboratory, pilot and technical-scale plants for companies and research institutions looking to safely test, optimize and scale up their processes. AP-Miniplant stands for hands-on engineering, robust manufacturing and integrated automation – from the initial concept to a fully operational system.
Since 1996, we have been delivering custom plant solutions for demanding applications. Our customers benefit from short communication paths, technical clarity throughout the project and a holistic implementation where mechanical engineering, instrumentation and control technology as well as automation are considered from the very beginning.
Turnkey Plant Engineering
Our strength lies in combining equipment design, piping construction, instrumentation and control systems as well as automation. This creates solutions that not only work technically, but also perform reliably in everyday operation.
With more than 250 successfully completed plant projects, we have gained hands-on experience in the planning and implementation of complex small-scale systems. AP-Miniplant develops and builds plants that enable reliable process testing, optimization and scale-up.
Facts & Figures
20 countries
Typical Applications
Our plants are used wherever processes need to be precisely controlled, measured and tested under realistic operating conditions – for example in the chemical, pharmaceutical and biotech industries, environmental technology, energy and hydrogen applications as well as research and development.
Depending on the task, we provide solutions for process development, scale-up, validation or specialized test systems. Every plant is consistently tailored to the project requirements – including process media, pressure and temperature ranges, materials, safety standards and the desired level of automation.
This is How a Project with AP-Miniplant works
A typical project starts with defining the technical requirements and interfaces. Based on this, the engineering phase follows – including system design, instrumentation layout and automation planning. After fabrication and assembly, we thoroughly test the plant before delivery and commissioning. Even after start-up, we continue to support our customers with process optimizations and all questions related to operation.
Inquiry & Quotation
Concept Development
Detailed Planning & Customer Approval
Construction & Automation
Testing & Final Approval (FAT)
Delivery & Commissioning
Company History of AP-Miniplant
AP-Miniplant GmbH & Co. KG was founded in 1996 by Dr.-Ing. Paul Appelhaus. Since then, the company has grown into a specialist for small-scale plants used across a wide range of industries – including the chemical industry, environmental technology, renewable energy and dedicated test systems for catalysts or electrolysis cells.
Founded by Dr.-Ing. Paul Appelhaus
The company was established under the name Dr. Appelhaus Engineering.
Renamed to AP-Miniplant
The company was renamed to AP-Miniplant GmbH & Co. KG.
Expansion of office and assembly space
The existing office and workshop facilities were expanded by 450 m².
Construction of an extension building and assembly hall
A new extension building with more than 650 m² of additional space and extensive technical infrastructure enables the assembly and testing of more complex plant systems.
Location of AP-Miniplant
Main building of AP-Miniplant GmbH & Co. KG
AP-Miniplant is located in Lindewerra, near the geographical centre of Germany. Lindewerra is idyllically situated in the river Werra Valley and is in the immediate vicinity of the spa town of Bad Sooden-Allendorf. Although Lindewerra is in the direct vicinity of numerous nature reserves and is located in a popular cycling and hiking region, the major cities of Kassel and Göttingen can be reached quickly via the nearby B27.
For more information about the region and the village of Lindewerra, please visit the municipality’s website:
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