The HI2209 is a basic, affordable pH/mV benchtop meter designed for simplicity of use. Manual calibration can easily be performed to 1 or 2 points with the help from the meter’s built-in solution holders. The meter has a large, easy-to-read LCD that displays pH or mV readings that are manually compensated for temperature variations. The HI2209 is supplied with a pH electrode and probe holder.