Shipping primary products worldwide in considerably large quantities involves keeping track rigorously of the materials quality, especially when the product shipped is quantified in tons. Keeping that in mind, the team has to provide the customer few samples, which will be analyzed for quality, chemical and mineral composition, water concentration, and particle size.

The degree of homogeneity among phosphate lots is very small, meaning that we can find very dispersed quality proportions of the product throughout the lot. Accordingly, the sampling team must make sure to follow certain criteria to retrieve the sample. This paper aims at setting a correct sampling guideline for phosphate.