This separated membrane cell kit has an advanced design that enables convenient assembly and disassembly. Each borosilicate glass cell half holds around 25 to 30 mL of liquid, and the user supplies a membrane or polymeric separator to fit between the sides and isolate each half cell. The frame is made from polypropylene (PP), and contains two metal locating rods and two threaded metal rods with tightening knobs that facilitate easy centering of the two PP frame pieces.

Two polytetrafluoroethylene (PTFE) “pucks” are fitted onto the ends of each half cell and are sealed against the glass with an O-ring. The opening in the pucks determines the surface area of the separator that is exposed to solution. The standard cell kit uses pucks with a 1 cm² opening. A second O-ring fits in a groove on the outside of each puck, and the cell kit frame results in those O-rings being perfectly centered, sealing on the membrane/separator, as the assembly is tightened.