Oto Physiometer Sterile medical device. Helps prevent earwax buildup. It does not contain propellant gas or preservatives. It is derived from water naturally rich in mineral salts and trace elements. Ultrafiltered and laboratory-sterilized seawater is transformed into hypertonic marine serum by electrodialysis. This technological process makes seawater extremely compatible with the physiological conditions of the ear canal. Format 115 ml bottle Code 12584