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2. pH meter - Wikipedia

   en.wikipedia.org/wiki/PH_meter

   Beckman model 72 pH meter, 1960. 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode ...

3. Milwaukee - Wikipedia

   en.wikipedia.org/wiki/Milwaukee

   Milwaukee ( / mɪlˈwɔːki / mil-WAW-kee) [16] is the most populous city in the U.S. state of Wisconsin and the county seat of Milwaukee County. [17] With a population of 577,222 at the 2020 census, Milwaukee is the 31st-most populous city in the United States and the fifth-most populous city in the Midwest.

4. pH indicator - Wikipedia

   en.wikipedia.org/wiki/PH_indicator

   A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH ( acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1] Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...

5. Glass electrode - Wikipedia

   en.wikipedia.org/wiki/Glass_electrode

   A glass electrode is a type of ion-selective electrode made of a doped glass membrane that is sensitive to a specific ion. The most common application of ion-selective glass electrodes is for the measurement of pH. The pH electrode is an example of a glass electrode that is sensitive to hydrogen ions. Glass electrodes play an important part in ...

6. pH - Wikipedia

   en.wikipedia.org/wiki/PH

   e. In chemistry, pH ( / piːˈeɪtʃ / pee-AYCH ), also referred to as acidity or basicity, historically denotes " potential of hydrogen " (or "power of hydrogen"). [1] It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions. Acidic solutions (solutions with higher concentrations of hydrogen ( H+) ions) are ...

7. Milwaukee metropolitan area - Wikipedia

   en.wikipedia.org/wiki/Milwaukee_metropolitan_area

   The Milwaukee metropolitan area (also known as Metro Milwaukee or Greater Milwaukee) is a major metropolitan area located in Southeastern Wisconsin, consisting of the city of Milwaukee and some of the surrounding area. There are several definitions of the area, including the Milwaukee–Waukesha–West Allis metropolitan area and the Milwaukee ...