Moisture (operational condition), % - 55,00 Ash, % (max) - 12,00 Acidity, Ñ?Ð� - 6,40 Bitumen (damp ozocerite), % (min) - 15,00 Humic acids, % (min) - 79,60 Leonardit - natural slate hydrocarbon formed in the earth over millions of years by chemical and biological decomposition of prehistoric plants and animals. It contains a high concentration of humic acids due to high microbial activity. Features of humic acid: - environmentally friendly bio-stimulator , which can be used throughout the cycle of plant growth; - helps improve moisture content and soil structure and help maintain its stability; - form the salt of the inorganic minerals in a form that can be easily assimilated by the plants; - plant provides power confrontation of illness, as well as increasing strength and quality of the root growth of plants; - increases soil permeability , increases the ability to retain moisture and reduce evaporation, developing useful colonies of microbes around the root. Leonardit used for the production of fertilizers such as sodium humate and potassium humate .