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2. pH meter - Wikipedia

   en.wikipedia.org/wiki/PH_meter

   The Radiometer Corporation of Denmark was founded in 1935, and began marketing a pH meter for medical use around 1936, but "the development of automatic pH-meters for industrial purposes was neglected. Instead American instrument makers successfully developed industrial pH-meters with a wide variety of applications, such as in breweries, paper ...

3. RightspotpH Indicator - Wikipedia

   en.wikipedia.org/wiki/RightspotpH_Indicator

   The effectiveness of the RightSpotpH® Indicator has been validated through clinical studies. A significant study published in the International Journal of Emergency Medicine demonstrated that the device is sensitive and specific for determining intragastric pH levels below or above 5.5, a common threshold used for confirming nasogastric tube placement.

4. Instruments used in medical laboratories - Wikipedia

   en.wikipedia.org/wiki/Instruments_used_in...

   Uses Test tube: Folin-Wu tube: Glass slide mycole and cover slips: in microscopy, serology, etc. as the solid backing on which test samples are Petri dish: used for preparation of culture media and the culture of organisms they are in Glass beaker: reagent storage Glass flask: gastric acid, or other fluid titration: Pasteur pipette

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. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   pH meter: pH (chemical acidity/basicity of a solution) photometer: illuminance or irradiance planometer: area polarimeter: rotation of polarized light potentiometer: voltage (term is also used to refer to a variable resistor) profilometer: surface roughness protractor: angle psychrometer: humidity pycnometer: fluid density pyranometer: solar ...

7. Glass electrode - Wikipedia

   en.wikipedia.org/wiki/Glass_electrode

   A silver chloride reference electrode (left) and glass pH electrode (right) Because of the ion-exchange nature of the glass membrane, it is possible for some other ions to concurrently interact with ion-exchange sites of the glass, and distort the linear dependence of the measured electrode potential on pH or other electrode functions. In some ...