The analyst looks for prohibited, primary and secondary noxious weed seeds, other weed seeds, other crop seeds and disease bodies in the analysed sample. Rules and regulations determine how serious and how the analyst counts the aforementioned. This information, over and above what is required on the grade tables allows the producers to make important decisions regarding his lot. We also make our clients aware of varietal contaminants which can be visualized in the sample. It is not always possible to see varietal contaminants in seed by visual observation alone but we try to report whenever possible.
Specified requirements are necessary when analysing some crop kinds.
Here are some examples of these. In Brassica and Sinapsis species, which include canola and mustards, all portions must be analysed under a stereoscopic microscope. This is commonly called the Percent Pure Seed in Canada. Canadian grade tables require it for most grasses but this part of purity analysis can be done on any seed. A weight of seed is required by seed testing regulations is drawn.