It is not possible to verify that a product is organically produced through means of chemical analysis. This is not reflected inchemical analysis. Organic production standards normally do not contain any regulation of maximum content of residues etc. and organic products are not defined as residue free products. Chemical analysis can sometimes be used for verifying that a product is not organic. In this case analysis are used for the purpose of with drawing certification but not for certification.
Chemical analysis is a very expensive tool.
Regarding the establisment of maximum acceptable levels of residues inorganic products. There are two reasons for establishing maximum acceptable levels of residues in organic products. Consumer protection . Consumers may beleive that organic product are residue free and thus feel betrayed if they understand that residues can occur. For a consumer, that wants to have a guarantee that organic products are residue free, it is irrelevant why there are residues in the product.