криміналістична експертиза наркотичних засобів

The article examines the rationale for an expert's categorical negative opinion on the example of an expert study of narcotic drugs from the poppy plant. The plant mass submitted for examination, which by its external features resembles poppy straw, was examined by microscopic and chemical methods. The microscopic examination revealed anatomical and morphological elements characteristic of poppy sleeping pills, which is the basis for classifying the substance under investigation as poppy straw.

In expert practice, questions often arise related to the separation (separation) of research objects from a mixture of dissimilar particles of solid materials, liquids of different densities,

emulsions, two-phase media. During the study, physical and chemical separation methods are used.