FRANK-PTI is a brand for highest demands

in research, development, production as well as quality assurance

With over 100 years of experience, FRANK-PTI stands for the highest quality, customer-focused solutions and uncomplicated and fast service in material testing. As a leading manufacturer of test systems of wet and dry applications, FRANK-PTI convinces with its innovation, reliability and performance. Customers all over the world trust in the durable, efficient and precise devices from FRANK-PTI and feel comfortable in the hands of our qualified employees. With its machines, FRANK-PTI stands for precision, comparability and repeatability. Through complete traceability, we ensure the safest and most reliable test results. Adaptable and well-thought-out machine design is the basis for our high quality standards. All devices are without exception "made in Germany".

Through our worldwide sales and service network with strong strategic partners, we are available for you everywhere. We advise, supply and service your equipment anywhere in the world under the highest possible quality standards. Our complete range of product covers routine and special applications with the highest precision. Our testing instruments are consistent with current standards and testing methods.

Of course, we also assist you if special applications are needed. With our expertise and flexibility we take care of your individual needs – even for planning, delivery and installation of your complete laboratory. Our strategy is based on individual and specific expert advice. With our production facility in the heart of Europe, numerous service centers in many markets and countless sales partners worldwide there is always someone in the vicinity that is able to assist you.

Our competent service department is able to maintain, calibrate, and repair your instruments even after many years of usage. Upgrading to the newest technology is carried out quickly and efficiently.

ISO Certification

Certified quality management according to ISO9001:2015

FRANK-PTI stands for the highest quality not only in products, but also in work processes. We have our management system regularly audited according to the criteria of ISO 9001. ISO 9001 describes the entire quality management system as a model and is the basis for our comprehensive quality management system.

ISO 9001 certificate download

Our History


FRANK-PTI becomes part of the NAVIGATOR GROUP. Elof Hansson remains strategic partner for worldwide sales.


New edition and revision of the PTA-Line into the new ModularLine.


Reorganization of the product portfolio into the classes:
Stand Alone
Pulp Tester
Preparation Products


FRANK-PTI focuses on the site in Birkenau, Germany. The complete product portfolio is now produced in Birkenau. The site in Austria focuses on sales and service. As a result, FRANK-PTI benefits from focused resourcing, centralized research and development, and better distribution of field service to offer a better and more holistic product portfolio and service.


Frank-PTI was acquired by Elof Hansson Gothenburg Sweden in 2012. Elof Hansson is an international trading company especially in the field of pulp and paper with about 500 employees and an estimated annual turnover of 1 billion US dollars.


Due to a strategic alignment with the parent company PTI, the company FRANK Prüfgeräte GmbH is renamed FRANK-PTI GmbH.

from 2005

FRANK Prüfgeräte invests in a new company building at the Birkenau site in 2005. This is now equipped with training rooms and state-of-the-art production halls.

A large part of the product range is converted to user-friendly touch screen technology. To further consolidate the service network within Germany, Poland and Switzerland, a cooperation with Kögel Werkstoff- und Materialprüfsysteme GmbH in Leipzig is agreed in 2006.


To meet the high demand for automatic cross-profile measurements, PTI launches the first PTA-Line(Paper Testing Automatic Line) in 2004.

from 1999

PTI is looking for a way to supplement the scope of supply for its pulp testing equipment. In 1999, the remaining stock of equipment and spare parts as well as drawings and rights are purchased from the insolvent company Frank and the company FRANK Prüfgeräte is founded at the same location. From this time on the companies FRANK and PTI produce independently at their respective locations. The complete product range of Karl Frank is overhauled. The devices are modernized, equipped with industrial PCs and graphic displays.

from 1995

The product range is regularly expanded with some testing equipment. Soon complete pulp testing laboratories are established.PTI establishes itself on the international market and becomes the market leader in sheet formers.


The company PTI (Paper Testing Instruments) was founded. With a small team the production of sheet formers and the trade of laboratory testing instruments starts.

from 1950

Frank develops numerous new testing instruments for the pulp and paper industry and rebuilds the production facilities in Weinheim-Birkenau and Mannheim-Rheinau, which were destroyed during the Second World War.


The production programme is expanded to include the manufacture of test equipment, and additional plants are gradually set up in Mannheim-Stadt and Weinheim-Birkenau, among others.


Frank develops numerous new testing instruments for the pulp and paper industry and rebuilds the production facilities in Weinheim-Birkenau and Mannheim-Rheinau, which were destroyed during the Second World War.

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