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2. pH indicator - Wikipedia

   en.wikipedia.org/wiki/PH_indicator

   In and of themselves, pH indicators are usually weak acids or weak bases. The general reaction scheme of acidic pH indicators in aqueous solutions can be formulated as: HInd (aq) + H 2 O (l) ⇌ H 3 O + (aq) + Ind − (aq) where, "HInd" is the acidic form and "Ind −" is the conjugate base of the indicator. Vice versa for basic pH indicators ...

3. Esophageal pH monitoring - Wikipedia

   en.wikipedia.org/wiki/Esophageal_pH_Monitoring

   In gastroenterology, esophageal pH monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease (GERD). It provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the response of the disease to medical or surgical treatment.

4. Workplace exposure monitoring - Wikipedia

   en.wikipedia.org/wiki/Workplace_exposure_monitoring

   Handheld electronic monitors give instantaneous readouts, but can experience interference from similar compounds, and the user must be knowledgeable enough to calibrate the device, and interpret its results with the specific device's limitations in mind. Fixed air monitors do not require an operator and can be left on continuously.

5. pH meter - Wikipedia

   en.wikipedia.org/wiki/PH_meter

   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]

6. All-in-one computer - Wikipedia

   en.wikipedia.org/wiki/All-in-one_computer

   Dell Inspiron One 23 Touch, an all-in-one PC from 2012. An all-in-one computer (also called an AIO or all-in-one PC) is a type of personal computer that integrates the computer components, such as the CPU, monitor, and speakers, into a single unit.

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