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A pH meter is an electronic device used for measuring the pH which is either the concentration of Hydrogen ions in an aqueous solution or the activity of the Hydrogen ions in an aqueous solution.
A pH meter consists of a special measuring probe (a glass electrode) connected to the body which measures and displays the pH reading.
The pH will indicate if the solution is acidic or basic, but is not a measure of acidity or alkalinity.
pH meters work in liquids though special probes are sometimes used to measure the pH of semi-solid substances.
Explanation of appearance: 1. ON/OFF 2. mode button 3. MAX/MIN HOLD button 4. C/F selection button 5. CAL/back light button 6. LCD Display 7. electrode plug 8. Electrode assembly 9. Electrode liquid storage bottle Package list: 1 x Digital PH meter (Battery not included) 1 x Plastic case 1 x Ph composite electrode