Agoh is a complex natural substance extracted from the soil. It is a mixture of organic matter, including humic acid, humin, and other compounds. Humic acid is a weak organic acid, and its acidity is influenced by the presence of carboxyl and phenolic groups. The pH of agoh can vary depending on the specific composition and extraction methods, but it is generally considered to be slightly acidic, with a typical pH range between 5.5 and 6.5.