Subsampling or sample reduction of an unground sample in the laboratory is frequently the largest single source of variation during

Introduction

Subsampling or sample reduction of an unground sample in the laboratory is frequently the largest single source of variation during the analysis procedure and should be avoided whenever possible. Samples too large to be ground in their entirety are first ground through a large mill (Wiley or equivalent) to pass a 4 to 6 mm sieve. The coarse ground sample is then reduced in a gated riffle splitter and ground again to the fineness desired for analysis.

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1. Sample Preparation >>

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