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| Physikalisch-Technische Bundesanstalt (PTB)
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| Research organization Federal Institutes
Research areas
Research and development in all fields of metrology and security technology (explosion protection)
Presentation and transfer of SI-units by the use of quantum effects and return to fundamental constants
Precision determination of physical constants
Transfer of technology to industry (German calibration service) and public metrology (also environmental and consumer protection)
External branches Berlin
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