With the help of tests on 10 big biological objects (sheep) was studied a modern model of severe lateral damage (6 mm diameter) of femoral artery. Within 45 seconds blood loss was 432.5 +/- 258.2 ml. The usage of domestic local hemostatic agent--"Gemostop" based on zeolite and "Gemofleks" based on chitosan. The total three-hour mortality was 50%. Primary hemostasis was recorded only in 20% of biological objects, the final hemostasis in 60%. Thus, the model of standard 6-mm lateral damage of femoral artery with a free primary hemmorage during 45 seconds should be considered as. optimal for evaluating the effectiveness of modern hemostatic agents.