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Here you will find current news from PTB's diverse research activities as well as a short guide to PTB.


If you come across someone who can tell you by heart and without cheating what a kilogram is after 20 May 2019, beware! It is probably a particular kind of scientist, a metrologist, who is still overly enthusiastic about the fundamental change experienced by the International System of Units, the SI. From 20 May 2019 on (World Metrology Day 2019), things as abstract as natural constants will be the measure of all things when it comes to defining what exactly a kilogram, an ampere, a kelvin and a mole exactly are. After years of research at the major metrology institutes, and in particular at the Physikalisch-Technische Bundesanstalt (PTB), the world community eventually agreed upon this revision of the System of Units – a revision that comes into force as of on World metrology Day.

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Kleinste Abmessungen, anspruchsvolle Strukturen – die Physikalisch-Technische Bundesanstalt (PTB) entwickelt laufend neue Lösungen für die Koordinatenmesstechnik. In diesem Jahr präsentiert die PTB auf der Control, der internationalen Fachmesse für Qualitätssicherung, sowohl eine kompakte 3D-Desktop-Koordinatenmessmaschine mit Nanometer-Auflösung als auch ein neuartiges Verfahren zur Kalibrierung von Gewinden unter der Verwendung eines ganzheitlichen Ansatzes. Zu finden sind diese Neuheiten vom 7. bis zum 10. Mai auf der Control in Stuttgart, Halle 4, Stand 4308.

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Contact with colleagues

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Are you seeking contact with PTB scientists? Then in the chapter Opens internal link in current windowStructure & Divisions you can look up who is working in a suitable field of activity.

Research topics

The SI with its 7 base units
In the new International System of Units (SI), seven fundamental constants are determined as defining reference values. (Diagram: PTB)

An overview of the diverse research landscape of PTB as well as some particularly highlighted topics (for example, PTB research surrounding the International System of Units SI) you will find in the chapter Opens internal link in current windowResearch & Development). In addition, it is always worthwhile to look at the Opens internal link in current windowmain Homepage as well as the homepages of the respective Opens internal link in current windowDivisions. How reputable PTB is among researchers you can see at Opens internal link in current windowPTB in the World of Research. Furthermore, PTB has been – specifically its R&D component, in particular – evaluated repeatedly with excellent results. You can download the respective documents (which are in German only) in the right column as a pdf file.

Scientific publications

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In the database Opens internal link in current windowPTB-Publica you can search for scientific publications by PTB staff members. Furthermore, some divisions maintain their own overview lists on the publications of their staff members. These you will find via the respective Opens internal link in current windowhomepages of the divisions.

Research collaborations

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The many collaborations of the individual PTB divisions you will find in the Annual Report under the column Opens internal link in current windowFrom the Divisions. International collaborations of PTB, e.g. with other metrology institutes within the framework of the European Metrology Research Programme EMRP/EMPIR, you will find at Opens internal link in current windowInternational Affairs. Some current EMRP dates you will find in the current issue of Opens internal link in current windowPTB-News.

What PTB offers doctoral candidates

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PTB's broad range of offers for students, doctoral candidates, and also extending beyond the doctorate degree you will find in the chapter Opens internal link in current windowAbout Us & Careers.