A quantity of material which is assumed to be a single population for sampling purposes.
Source:
PAC, 1990, 62, 1193
(Nomenclature for sampling in analytical chemistry (Recommendations 1990))
on page 1201
PAC, 1988, 60, 1461
(Nomenclature, symbols, units and their usage in spectrochemical analysis-X. Preparation
of materials for analytical atomic spectroscopy and other related techniques (Recommendations
1988))
on page 1463