The Test Cell heat press applies pressure across the cell for sealing. A combination of light mechanical pressure and heating is used in sealing. A heated element applies pressure to the glass substrate of the counter electrode to melt a thermoplastic gasket between the counter and working electrodes.
The temperature which the counter electrode reaches can be controlled by temperature set by the user to the heating head and the length of time of applied pressure. This is important because excessive temperatures will damage temperature sensitive materials. The mechanical pressure applied to the cell during construction and the time of application can be varied by a user-adjustable pressure regulator and a timing unit. This is important because it ensures consistent, repeatable cell construction.