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The HI5221 is an advanced research grade benchtop pH/mV meter that is completely customizable with a large color LCD, capacitive touch keys, and USB port for computer connectivity. The HI5221 is rich in features including five-point calibration, selectable resolution, data logging, alarm limits, comprehensive GLP, and much more. This meter retains simplicity with both dedicated keys for routine operation and virtual keys that guide the user through setup options.