Product description Product name: Auto-Correction Digital PH MeterColor: YellowType: Portable Water Quality AnalyzerMeasuring range: 0.00-14.00 Directions PH tester automatically calibrates at three points. You don't need any tools, just remove the protective cap and dip the pH meter electrode into the solution. Press "ON/OFF" to turn on the electronic pH meter, stir gently, and wait a few seconds until the reading stabilizes.
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