E1.1 Innovative mass standards for the worldwide transfer of the redefined unit kilogram
- SMSI 2020
(did not take place because of Covid-19 virus pandemic)
- SMSI 2020 - System of Units and Metrological Infrastructure
- E1 Traditional and Quantum-based Measurement Standards
- K. Lehrmann, D. Knopf, F. Härtig - Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (Germany)
- 354 - 355
Manufacturing processes and handling procedures for new stable silicon mass standards with unprec-edented accuracy have been developed and transferred to industry. The patented manufacturing pro-cess and the high precision calibration procedures were developed by PTB. Both the manufacturing process for the spheres and the handling of the spheres were extended to two small and medium-sized enterprises (SME). The transfer was part of the three-year transfer project “Si-kg” for industrial requirements and placed on the market with great success.