1,1,2,2-Tetrafluoro-2-(1,1,2,2,2-pentafluoroethoxy)ethanesulfonic acid

1,1,2,2-Tetrafluoro-2-(1,1,2,2,2-pentafluoroethoxy)ethanesulfonic acid, certified reference material, TraceCERT^®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland