The device is designed with a glass body having a single hole that has no diaphragm, a polymer electrolyte, and does not demand for maintenance.
Its main features include a Mono-tubular combined electrode for measuring the pH and an S401 V/G pH Electrode that is to be utilized for general purposes. Its measuring method is characterized as Potentiostatic having an Ag/AgCl reference. It can be connected to a S7 type pH standard - with integrated PG 13.5 for its
connection to the process.