Glassware Burets Flasks, Beakers, & Graduated Cylinders Pipets Repipets Volumetric Flasks Instruments Analytical Balance pH Meter: Analog pH Meter: Digital Spectrometer: Analog Spectrometer: Digital Spectrometer: Scanning Top-loading Balance Techniques Calorimetry Centrifugation Quantitative Transfer Titration Vacuum Filtration ChemLab Home		Digital pH Meter A Digital pH meter uses an electrode to measure the pH of a solution. Calibrating a Digital pH Meter Press the mode button to select pH. Press the Setup button twice, then press the Enter button to clear the existing standardization Press the STD button to begin the new calibration. Remove the electrode from the bottle of storage solution. Rinse with distilled water. Emerse the electrode in pH 4 buffer, which is pink. Swirl the solution to fully saturate the electrode with buffer. Press the STD button again. After the reading is stable, the meter will return to the Measure screen. Press the STD button again to calibrate with a second buffer solution Remove the solution from the pH 4 buffer and rinse the electrode Emerse the electrode in the pH 10 buffer and swirl. Press STD again to calibrate with this buffer. The meter will display a calibration slope and return to the Measure screen. Now the meter should be calibrated and ready to use for measuring the pH of any solution.
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