Ancient traditional method of making saltpeter скачать в хорошем качестве

Ancient traditional method of making saltpeter

In ancient times, saltpeter was produced by traditional methods from animal manure, wood ash and nitrogen-rich soil. Ancient people collected cow dung, horse dung mixed with straw, ash and soil, then composted in large pits or barrels to let bacteria decompose organic compounds into nitrates. After a few months, they took the nitrate-soaked soil, mixed it with water and filtered. The resulting solution was concentrated and crystallized to create white saltpeter crystals. This method was manual but popular in many places, especially in ancient gunpowder production. #saltpepper #traditional #handmade #china #ancient #salt