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Analytical chemistry
Industry: Chemistry
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Analytical chemistry
Reduction
Chemistry; Analytical chemistry
Preparation of one or more subsamples from a sample of material that is to be analysed chemically.
Fractional precipitation
Chemistry; Analytical chemistry
Method for separating elements or compounds with similar solubilities by a series of analytical precipitations, each one improving the purity of the desired element.
Calibrant
Chemistry; Analytical chemistry
In chemical analysis, a substance used to calibrate the response of a measurement system to the analyte.
Reference material
Chemistry; Analytical chemistry
A material or substance whose properties are sufficiently well established to be used in calibrating an apparatus, assessing a measurement method, or assigning values to other materials.
Freeboard
Chemistry; Analytical chemistry
The space provided above the resin bed in an ion-exchange column to allow for expansion of the bed during backwashing.
Calibration reference
Chemistry; Analytical chemistry
Any of the standards of various types that indicate whether an analytical instrument or procedure is working within prescribed limits; examples are test solutions used with pH meters, and solutions ...
Relative stability test
Chemistry; Analytical chemistry
A colour test using methylene blue that indicates when the oxygen present in a sewage plant’s effluent or polluted water is exhausted.
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