Fumasep FS-990-PK is a PEEK-reinforced perfluorinated cation-exchange membrane with low resistance, high mechanical stability, high selectivity and high chemical and oxidative stability.

Application note
Fumasep FS-990-PK is typically used in electrochemical processes requiring cation exchange membranes with high oxidative stability such as water electrolysis, redox-flow batteries, etc. The membrane is delivered in a dry form in a PET backing foil. No pre-treatment is required.