aliquot
(in analytical chemistry)
Known amount of a homogeneous material, assumed to be taken with negligible sampling error.
Note 1: The term is usually applied to fluids.
Note 2: The term aliquot is usually used
when the fractional part is an exact divisor of the whole: the term
aliquant has been used when the fractional part is not an aexat divisor
of the whole ( e.g. a 15-ml portion is an aliquant of 100 ml).
When an aliquot is taken of a laboratory
sample or test sample or the sample is otherwise subdivided, the
samples have been called split samples.
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