caption: In this picture we can see the chemical station. We can see a person wearing a bag and standing on the ground. We can see the plastic tanks on the tables. Under these tables, we can see the plastic tubs. On these plastic tanks, we can see the text, stickers and papers with text. We can see the pipes, fermenters, light, an electrical box, metal objects, rods, wires and other things. We can see papers with text on the plastic tubs.