Biotransik i800 PS – a bio-preparation intended for use in agriculture. It contains the active ingredient Bacillus subtilis SYM18490 at a concentration of 1*107 IU/g. The preparation is applied by treating seeds, which allows plants to become more resistant to stress factors and improves their growth. The preparation is applied once at a dose of 36–100 g per 100 kg of seeds. The preparation is intended for treating sunflower seeds, providing protection against pathogenic microorganisms and improving the physiological parameters of plants. The manufacturer is the company Indigo Ag, Inc., located in the USA.