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Analytical chemistry
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Analytical chemistry
Photometric titration
Chemistry; Analytical chemistry
A titration in which the titrant and solution cause the formation of a metal complex accompanied by an observable change in light absorbance by the titrated solution.
Duplicate measurement
Chemistry; Analytical chemistry
An additional measurement made on the same (identical) sample of material to evaluate the variance in the measurement.
Alkalimeter
Chemistry; Analytical chemistry
1. An apparatus for measuring the quantity of alkali in a solid or liquid. 2. An apparatus for measuring the quantity of carbon dioxide formed in a reaction.
Phthalate buffer
Chemistry; Analytical chemistry
Laboratory pH reference solution made of potassium hydrogen phthalate, KHC 8 H 4 O 4 ; at 0.05 molal, the pH is 4.008 at 25_C.
Duplicate sample
Chemistry; Analytical chemistry
A second sample randomly selected from a material being analysed in order to evaluate sample variance.
Alkalimetry
Chemistry; Analytical chemistry
Quantitative measurement of the concentration of bases or the quantity of one free base in a solution; techniques include titration and other analytical methods.
Plate theory
Chemistry; Analytical chemistry
In gas chromatography, the theory that the column operates similarly to a distillation column; for example, chromatographic columns are considered as consisting of a number of theoretical plates, ...
