CIRCULATION OF SOLID DENSITY STANDARD (COLLECTION OF INDIVIDUAL REPORTS)
The individual reports are summarised in an overall report of the same title. In a previous project PTB and IMGC have shown that a zerodur sphere can be defined as a standard of density with an uncertainty of the order of 1.0 E-6. A sphere previously studied by those two laboratories has then been circulated to seven other laboratories in Member States in the European Community, to verify the usability of the zerodur sphere as a solid density standard. The results agree within 1 ppm and confirm the fact that such spheres can be used as a solid density standard.
Bibliographic Reference: EUR 12032 EN (1990) 137 PP., MF, ECU 8 AVAILABLE FROM THE OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES, L-2985 LUXEMBOURG
Availability: Can be ordered online
Record Number: 1989128011900 / Last updated on: 1990-11-09
Available languages: en