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  2. pH meter - Wikipedia

    en.wikipedia.org/wiki/PH_meter

    Portable, or field pH meters, are handheld pH meters that are used to take the pH of a sample in a field or production site. [19] In-line or in situ pH meters, also called pH analyzers, are used to measure pH continuously in a process, and can stand-alone, or be connected to a higher level information system for process control. [20]

  3. 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 ...

  4. Template:PH indicator - Wikipedia

    en.wikipedia.org/wiki/Template:PH_indicator

    No description. Template parameters [Edit template data] This template prefers block formatting of parameters. Parameter Description Type Status indicator_name indicator_name no description Unknown optional low_pH low_pH no description Unknown optional high_pH high_pH no description Unknown optional low_pH_color low_pH_color no description Unknown optional low_pH_text low_pH_text no ...

  5. Glass electrode - Wikipedia

    en.wikipedia.org/wiki/Glass_electrode

    The bottom of a pH electrode balloons out into a round thin glass bulb. The pH electrode is best thought of as a tube within a tube. The inner tube contains an unchanging 1×10 −7 mol/L HCl solution. Also inside the inner tube is the cathode terminus of the reference probe.

  6. Template:PH indicator/doc - Wikipedia

    en.wikipedia.org/wiki/Template:PH_indicator/doc

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  7. PowerPoint karaoke - Wikipedia

    en.wikipedia.org/wiki/PowerPoint_karaoke

    The term "PowerPoint karaoke" is also sometimes derisively used to refer to presenters who face the screen where their PowerPoint slides are being projected and proceed to read them, boring and effectively ignoring their audience. Spanish conceptual artist Rubén Grilo used "PowerPoint Karaoke" as a title for a show at MARCO in June 2011.

  8. Buffer solution - Wikipedia

    en.wikipedia.org/wiki/Buffer_solution

    A buffer solution is a solution where the pH does not change significantly on dilution or if an acid or base is added at constant temperature. [1] Its pH changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical ...

  9. Background music - Wikipedia

    en.wikipedia.org/wiki/Background_music

    Background music (British English: piped music) is a mode of musical performance in which the music is not intended to be a primary focus of potential listeners, but its content, character, and volume level are deliberately chosen to affect behavioral and emotional responses in humans such as concentration, relaxation, distraction, and excitement.