样品缩分（sample splitting）是化学分析等样品加工的步骤之一，是按一定的要求，将破碎到一定颗粒直径的样品，分为若干份具有同等可靠性的样品，或在加工、破碎以前对原始样品进行缩减的操作过程。
③二分器缩分法：二分器系非机械式样品缩分器，通常用手工给料，样品通过二分器被分成二等份，一份保留，另一份弃去。
Riffle division method: a riffle is a kind of non-mechanical sample divider, which is usually fed manually. The sample is divided into 2 equal parts by riffle, with one retained and one rejected.
用新的缩分取样公式研究了提金工艺实验样品湿法分析金的准确性。
Furthermore, the accuracy of wet assay of gold in experimental sample was studied by means of new reduction sampling formula.
本文探讨了含明金样品的可碎性、过筛、缩分，制定了加工这类样品的新流程。
In this paper, the crushability, screening and reduction of the samples containing visible gold were researched and a new flow path to process the samples was developed.
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