Mass Standards

• Maintenance of the national prototype of the kilogram and realization of the mass scale
• Dissemination of the unit of mass by verification and calibration of weights and mass standards in the range from 1 mg to 5000 kg
  
• Research and development on the field of mass determination
• Cooperation with national and international organizations
• Participation in national and international comparison measurements
• Expert activity for the Germany's national accreditation body (DAkkS/DKD)
• Training and advicing with the set-up and development of mass laboratories in other metrological institutes as part of the technical cooperation
• National approval of devices for the bulk density measurement of cereals

• Experimental determination of the air density by weighing specially designed buoyancy artefacts in vacuum and in air
• Investigation on convection influences on the weighing process
• Investigation of the magnetic properties of mass standards and weighing instruments and of the corresponding interactions
• Investigation on the influences of sorption and cleaning and on the long term stability of mass standards

Calibration and Measurement Capabilities (CMC) and Price List of PTB starting on 1. Oktober 2021

Customer information on the impact of the redefinition of the kilogram:

The kilogram - the Unit of Mass

Calibration capabilities mass standards and weights