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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]
Moreover, pH indicators form one of the three main types of indicator compounds used in chemical analysis. For the quantitative analysis of metal cations, the use of complexometric indicators is preferred, [ 2 ] [ 3 ] whereas the third compound class, the redox indicators , are used in redox titrations ( titrations involving one or more redox ...
historically, used in human or animal experiments to measure and record data Long extension kymograph: historically, used in or human animal experiments to measure and record data Surface plasmon resonance: Label-free detection of molecule binding. Used to determine kinetic constants of the interaction (k a, k d, K D). Can also be used for ...
In well managed laboratories, AQC processes are built into the routine operations of the laboratory often by the random introduction of known standards into the sample stream or by the use of spiked samples. Quality control begins with sample collection and ends with the reporting of data. [4]
significance or importance of the test method and its intended use; terminology and definitions to clarify the meanings of the test method; types of apparatus and measuring instrument (sometimes the specific device) required to conduct the test; sampling procedures (how samples are to be obtained and prepared, as well as the sample size) safety ...
Laboratory informatics is the specialized application of information technology aimed at optimizing and extending laboratory operations. [1] It encompasses data acquisition (e.g. through sensors and hardware [2] or voice [3] [4] [5]), instrument interfacing, laboratory networking, data processing, specialized data management systems (such as a chromatography data system), a laboratory ...
Esophageal pH monitoring is performed for 24 or 48 hours and at the end of recording, a patient's tracing is analyzed and the results are expressed using six standard components. Of these 6 parameters, a pH score called Composite pH Score or DeMeester Score has been calculated, which is a global measure of esophageal acid exposure. A Demeester ...
For instance, if one wishes to measure the pH of a seawater sample, the electrode should be calibrated in a solution resembling seawater in its chemical composition. The difference between p[H] and pH is quite small, and it has been stated that pH = p[H] + 0.04. [20] However, it is common practice to use the term "pH" for both types of measurement.