The electrometric determination of pH is essentially an evaluation of the thermodynamic quantity −logaH3O+ from a measurement of an electrical potential difference between two electrodes. It is accordingly necessary to examine the electrometric method in light of thermodynamic concepts in order to ...
2.1 RatioWorks™ PDMPO, A Dual-Excitation|Dual-Emission Ratiometric pH Indicator 2.2 Protonex™ Dyes, Acidotropic pH Indicators 2.3 Key Features of Protonex™ dyes Products Near Neutral pH Measurement BCECF, and its membrane-permeant AM ester, is the most widely used fluorescent pH indi...
once they are properly calibrated, they measure more accurately than a test strip or other method of pH measurement. The number of hydrogen ions is quantified by the meter, which is essentially a voltimeter and is a lot more sensitive than other methods. ...
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liquid-liquid boundary. In fact suchvariations in measured pH(X) are usually at the OO2 level and are too small to be of prac-tical significance for most measurementsTo avoid variation in pH(X) with choice of primary reference standard, essentially a problemof overdefinition, operational ...
In fungi, environmental pH is an important signal for development, and successful host colonization depends on homeostasis. Surprisingly, little is known regarding the role of pH in fungal-fungal interactions. Species of Trichoderma grow as soil saprobes
BCFL ratiometric imaging makes intracellular pH determination essentially independent of several variable factors, including dye concentration, path length, cellular leakage and photobleaching rate。 BCFL, AM is a single isomer, making the pH measurement much more reproducible than the BCECF, AM, which ...
pH; hydrogen ion concentration; measurement; in-situ; in-line; temperature; milk products; dairy processing1. Introduction One of the most critical control parameters within the food, pharmaceutical, cosmetic, electrochemical, paper, and textile industries, to name a few, is the monitoring and ...
essentially constant. For the 37.0° C. culture, lactate increased throughout the entire duration of the fed-batch. Ammonia concentration varied during the production phase according to temperature (FIG. 23). For the 29.0° C. culture, the ammonia concentration peaked on or around the day of ...
In each of the applications discussed in this article (charge titration curve measurement, measurement of the electric field, and studies of conformational changes) the pH-dependence of the NMR chemical shift has been interpreted as being dominated by a single of these components. While for some ...