The SD pH electrode type 330 with gel electrolyte is cost-effective and suitable for universal applications. Filling of the internal electrolyte becomes unnecessary due to the use of a KCl gel electrolyte, which keeps maintenance requirements low. The storage bottle with rubber seal is ideal for keeping the glass membrane moist even during long storage periods, thus ensuring perfect sensor performance and service life.

The robust plastic housing made of PC provides the necessary mechanical stability and protects the spherical glass membrane from breakage. The BNC connector is suitable for all pH meters equipped with a BNC socket. Temperature compensation is achieved either by manual input into the meter or automatically by using a SD temperature sensor.