. . . _:b19936 . "concentration (v/v)"@en . "volumefractie"@nl . "volume fraction"@en . _:b19903 . . "\u03C6" . _:b19937 . . _:b19903 . . . . _:b19937 . _:b19903 . _:b19936 . _:b19937 . _:b19903 . _:b19936 _:b19937 . _:b19936 .