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The choice of the second buffer depends on your application: if you measure values below pH 7, use pH 4 as a second buffer. If you measure values above pH 7, use pH 10 as your second buffer. Some of our pH meter use 3 points calibration, keep in mind to always start with pH 7 first and others after.
What are pH values. why is it important to know pH value of items? The scale that is used for measuring the pH, or hydrogen ion concentration â¦ is from 0 to 14, with 7 being the neutral point. The scale for the concentration of hydrogen ion â¦ s is called the pH value. This stands for potential Hydrogen or strength of the hydrogen. The pH value indicates whether a solution reacts alkaline, neutral, or acid. In a neutral solution, such as pure water, the pH is exactly 7. The pH of an acid solution is less than 7, the pH of an alkaline solution is higher than 7. Thus, an Alkaline Body pH means that the pH of the blood is above 7 with the ideal pH being 7.35. Outside of this range - the body activity is no longer optimal and the metabolism is out of balance.