The addition of ethanol, which is fully miscible in water yet, less polar than Water reduces its solubility. This reduction of solubility results in precipitation of least soluble salts first or the salt which is not soluble in solvents less polar than water.
Pole pockets on banners are something that can cause a bit of confusion. This is compounded by the fact that some companies do things differently when producing banners with pole pockets.
The Deluxe 6-foot SunSetter Flagpole Set, is shown above. This 6 Ft. Aluminum Pole and American Flag Set mounts simply and elegantly on virtually any vertical surface. Unlike, flimsy, poorly-made poles, our pole is made of heavy-duty, aircraft-grade aluminum, with an adjustable bracket and stainless steel flag clips.