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2. Quinhydrone electrode - Wikipedia

   en.wikipedia.org/wiki/Quinhydrone_electrode

   Quinhydrone electrodes provide fast response times and high accuracy. However, it can only measure pH in the range of 1 to 9 and the solution must not contain a strong oxidizing or reducing agent. A platinum wire electrode is immersed in a saturated aqueous solution of quinhydrone, in which there is the following equilibrium C 6 H 6 O 2 ⇌ C 6 ...

3. pH meter - Wikipedia

   en.wikipedia.org/wiki/PH_meter

   Beckman Model M pH Meter, 1937 [1] 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]

4. Analytical quality control - Wikipedia

   en.wikipedia.org/wiki/Analytical_quality_control

   A check should first be done to ensure that the data should be seen is precise and accurate. Next, systematic daily checks such as analysing blanks, calibration standards, quality control check samples, and references must be performed to establish the reproducibility of the data.

5. Electroanalytical methods - Wikipedia

   en.wikipedia.org/wiki/Electroanalytical_methods

   In fact, since the potentiometric measurement is a non-destructive measurement, assuming that the electrode is in equilibrium with the solution, we are measuring the solution's potential. Potentiometry usually uses indicator electrodes made selectively sensitive to the ion of interest, such as fluoride in fluoride selective electrodes , so that ...

6. Glass electrode - Wikipedia

   en.wikipedia.org/wiki/Glass_electrode

   Reference internal solution, usually 3.0 mol/L KCl. Junction with studied solution, usually made from ceramics or capillary with asbestos or quartz fiber. Body of electrode, made from non-conductive glass or plastics. 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.

7. Calibration curve - Wikipedia

   en.wikipedia.org/wiki/Calibration_curve

   A calibration curve plot showing limit of detection (LOD), limit of quantification (LOQ), dynamic range, and limit of linearity (LOL).. In analytical chemistry, a calibration curve, also known as a standard curve, is a general method for determining the concentration of a substance in an unknown sample by comparing the unknown to a set of standard samples of known concentration. [1]

8. Chevy Chase Told Director Jason Reitman He ‘Should Be ...

   www.aol.com/chevy-chase-told-director-jason...

   Director Jason Reitman received a less than glowing review of “Saturday Night” from “SNL” legend Chevy Chase. While speaking on the “Fly on the Wall” podcast, hosted by former “SNL ...

9. Calibration - Wikipedia

   en.wikipedia.org/wiki/Calibration

   This is called a limited calibration. But if the final measurement requires 10% accuracy, then the 3% gauge never can be better than 3.3:1. Then perhaps adjusting the calibration tolerance for the gauge would be a better solution. If the calibration is performed at 100 units, the 1% standard would actually be anywhere between 99 and 101 units.