Soil quality — Sampling — Part 201: Physical pretreatment in the field (ISO 18400-201:2017)
This document specifies methods for the pretreatment of samples that can be applied “in the field” directly after sampling. Pretreatment methods in this document are limited to:— sample division methods aimed at reducing the size/ volume of the sample — the production of composite samples — the selection of a specific fraction of the sampled material.This document— does not apply to samples required for biological or microbiological examination,— does not apply to soil materials sampled for the content of volatile components, andNOTE 1 These soil materials are intended to be sampled according to ISO 22155.— does not give instructions for particle size reduction.NOTE 2 Guidance for particle size reduction is given in ISO 11464, ISO 14507 and ISO 23909.
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