Combined sample

{
  "id": "MLC-T-CHM-002274",
  "term": "Combined sample",
  "field": "Chemistry",
  "definition": "A sample obtained by separating specific fractions of the material, for example by sieving or by heavy-liquid or magnetic separation, analysing each fraction separately, and then combining the results mathematically to give a value for the whole material. The fractions are not physically remixed before analysis. It differs from a composite sample, which is a physical mixture of several samples and is analysed as one.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "composite sample",
    "modified sample"
  ],
  "references": [
    "PAC, 1990, 62, 1193. 'Nomenclature for sampling in analytical chemistry (Recommendations 1990)' on page 1204 (https://doi.org/10.1351/pac199062061193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/combined-sample/"
}