Tiselius took an active part in the reorganization of scientific research in Sweden in the years following World War II, and was President of the International Union of Pure and Applied Chemistry 1951–1955.
Tiselius berperan aktif dalam reorganisasi penelitian ilmiah di Swedia pada tahun-tahun setelah Perang Dunia II, dan menjadi Presiden International Union of Pure and Applied Chemistry antara tahun 1951-1955.