ASTM E877-13 PDF Download

Iron ores and related commodities should be sampled and prepared according to ASTM E877-13, a standard practice. In order to assess whether the materials comply with compositional standards for metal content or physical qualities, a referee method must first be used to acquire representative samples. It is expected that those who use this procedure are skilled analysts who know how to work safely and efficiently in a lab.

For analyzing the chemical and physical properties of iron ores, the standard emphasizes the significance of acquiring sufficient representative samples. These materials' unique qualities will determine how they are used and sold. The criteria listed in the standard can be applied when creating a sampling system or when evaluating the design of an existing system to eliminate bias.

The approach includes mechanical sampling procedures utilizing techniques like stopped-belt sampling and falling stream sampling. Additionally, the gross sample must be divided into the individual test samples needed to measure each attribute. Annexes to the standard provide more details on bias-prevention design criteria, statistical methods for assessing sampling and division precisions, and a method for assessing potential systematic differences between two sampling techniques.