Solvay Solexis has specified Emerson Micro Motion Coriolis flowmeters throughout its Spinetta Marengo plant in Italy for the measurement of mass flow. The company is part of the Solvay Group, a manufacturer of fluorinated products for speciality markets. The Spinetta Marengo site, which is dedicated to the production of fluoride polymers, has more than 200 flow measurement points and around 75% of these applications have Micro Motion Coriolis meters installed addressing special challenges. Micro Motion Elite, F-Series and Model D Coriolis flowmeters have been implemented in critical areas and extreme conditions, including cryogenic applications and the dosing of fluoridric acids. Examples of the performance of the Micro Motion flowmeters include D Series Tefzel-coated meters installed in the hydrofluoric acid lines. Tefzel is resistant to hydrofluoric acid and these devices have been installed in this aggressive environment for more than four years. During this time, there have not been any reported problems. The Micro Motion Elite sensors are used as a mass flow reference for the onsite calibration of other mass flowmeters.