Correct sampling

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During sampling of granular materials (whether airborne, suspended in liquid, aerosol, or aggragated), correct sampling is defined in Gy's sampling theory as a sampling scenario in which all particles in a population have the same probability of ending up in the sample.[1]

The concentration of the property of interest in a sample can be a biased estimate for the concentration of the property of interest in the population from which the sample is drawn. Although generally non-zero, for correct sampling this bias is thought to be negligible.[1]

See also[edit]


  1. ^ a b P. M. Gy (1979), Sampling of Particulate Materials: theory and practice. Elsevier: Amsterdam, 431 pp.