20ml electrochemical cell is the cell of voltammetric determination. Example, cyclic voltammetry measurements, and Amperometric measurement for sensor research, volume of the cell is 5 ~ 20ml. That is, electrochemical measurements can be run when the measured solution is 5 ~ 20ml.
Cell cap is made of Teflon. There are four holes. The three holes around the cell top are for working electrode, reference electrode and auxiliary electrode. The diameter is 6.4mm. Each electrode is inserted into solution in slanting, which courses air bubbles easily take off. The diameter of the hole in the middle is 10mm, which is used to the addition of the standard sol during measurement, or the 10mm diameter is used to electrode junction holder. And there are two small holes with a diameter of 1.5mm in the cell cap, it is for gas purge.

There is a groove on the inside of the cap; the glass cell is fitted to the cap.

Price $69 or EUR69 (Cell Cap & Two pieces of Glass Cell)