Extraction in which the extraction phase and the sample are confined in an extraction vessel and processed according to a defined procedure.
Note: Term "batch" is also used in extraction to indicate a number of samples extracted sequentially or simultaneously by the same procedure (e.g. extraction of sample batch(es)).
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 521 (https://doi.org/10.1515/pac-2015-0903)