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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. Alcon - Wikipedia

   en.wikipedia.org/wiki/Alcon

   Alcon offices in Johns Creek, Georgia. Alcon Inc. ( German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. [2]

4. 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 ...

5. 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 ...

6. AOL Mail

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   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

7. List of people named Alcon from classical myth - Wikipedia

   en.wikipedia.org/wiki/List_of_people_named_Alcon...

   The name Alcon ( / ˈælkɒn /; Ancient Greek: Ἄλκων) or Alco can refer to a number of people from classical myth: Alcon, a Laconian prince as the son of King Hippocoon, usurper of Tyndareus. He was one of the hunters of the Calydonian Boar. Alcon was killed, together with his father and brothers, by Heracles, and had a heroon at Sparta.