About VSL
VSL (Van Swinden Laboratorium, after the 18th century Dutch scientist) is het Nationaal Metrologisch Instituut van Nederland. The Netherlands became a Member State and State Party to the Metre Convention in 1929, which established the International Bureau for Weights and Measures (le Bureau international des poids et mesures (BIPM)) in 1875. VSL has participated in the CIPM Mutual Recognition Arrangement (CIPM MRA) since 1999. This convention regulates the worldwide recognition of Dutch measurement standards and reference materials and the resulting certificates.