Imprint

Physikalisch-Technische Bundesanstalt (PTB) 
Represented by the President Prof. Dr. Cornelia Denz

PTB Braunschweig: 
Bundesallee 100 
D-38116 Braunschweig
Phone: +49 (0)531-592-0 
E-mail: info(at)ptb.de

PTB Berlin: 
Abbestraße 2-12 
D-10587 Berlin-Charlottenburg 
Phone: +49 (0)30-3481-0 
E-mail: info(at)ptb.de

Value added tax identification number/VAT-Nr.: DE811 240 952
ISNI: 0000 0001 2186 1887