BS ISO 18400-201:2017规定了可“现场”应用的样品预处理方法 采样后直接进行。本文件中的预处理方法仅限于:旨在减少样品大小/体积的样品分割方法；复合样品的生产；选择取样材料的特定部分。本文件不适用于生物或微生物检验所需的样品，也不适用于挥发性成分含量取样的土壤材料，注1:这些土壤材料拟根据ISO 22155进行取样。 不提供粒径减小的说明。注2:ISO 11464、ISO 14507和ISO 23909中给出了粒度减小指南。交叉引用:ISO 565ISO 11074ISO 18400-101:2017ISO 18400-104ISO 18400-105ISO 18400-107ISO 22155DIN 19747ISO 3534-2:2006ISO 10381-6ISO 11464ISO 14507ISO 16720ISO 18400-100ISO 18400-102ISO 18400-103ISO 18400-106ISO 18400-202ISO 18400-203ISO 18400-204ISO 18400-205ISO 18400-206ISO 23909DIN 18123购买本文件时可提供的所有现行修订件均包含在购买本文件中。

BS ISO 18400-201:2017 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 documentdoes 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.Cross References:ISO 565ISO 11074ISO 18400-101:2017ISO 18400-104ISO 18400-105ISO 18400-107ISO 22155DIN 19747ISO 3534-2:2006ISO 10381-6ISO 11464ISO 14507ISO 16720ISO 18400-100ISO 18400-102ISO 18400-103ISO 18400-106ISO 18400-202ISO 18400-203ISO 18400-204ISO 18400-205ISO 18400-206ISO 23909DIN 18123All current amendments available at time of purchase are included with the purchase of this document.