The HI-12300 is a plastic body, double junction, gel filled pH electrode with a built-in temperature sensor for temperature compensated measurements in a single probe design. Ideal for field applications. This probe features a 3.5 mm connector designed exclusively to be used with Hanna Instruments edge® tablet meters. The HI-12300 electrode features a built-in microchip that stores sensor type, serial number, and calibration information. It also features a single ceramic junction and the spherical pH sensing portion is made with general purpose glass. The electrode has a rugged PEI (polyetherimide) body that has the chemical resistance of a glass body in an unbreakable plastic making it ideal for field and industrial applications. The HI-12300 is a smart pH electrode for use with the HI-2020 Edge hybrid meter. This electrode features a built-in microchip that stores sensor type, ID, and calibration information that is automatically retrieved by Edge once the electrode is plugged in.