**5. Determination of humidity**

By the moisture content of the raw material, it is meant a loss in mass due to hygroscopic moisture and volatile substances, which is determined by drying to a constant mass. Medicinal plant raw materials should not contain moisture above permissible standards. Moisture content of the analyzed raw material was determined by the method of drying by Pharmacopea XIV [14]. The weight loss on drying was 8.60% (average of two parallel determinations).
