Hanna Instruments GroLine Hydroponics pH Tester HI98115 TDS Simply unscrew the old electrode

Simply unscrew the old electrode

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Hanna Instruments GroLine Hydroponics pH Tester HI98115 TDS Simply unscrew the old electrodeThe HI98115 GroLine Hydroponics pH tester has been designed with many advanced features that are found typically in more expensive portable instrumentation. These features include automatic calibration to one or two points, automatic buffer recognition, calibrated buffer tags, stability indicator, low battery indicator, and selectable automatic shut off. Features at a glance: Economical The HI98115 is a full featured pH tester at a price that anyone