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.
Guidon Pole sets are available with the standard pointed ferrule bottom or with a rounded bottom for displaying indoor in a standard indoor flagstand. 8Ft Poles- Used for displaying Organizational Flags 3x4Ft and 3x5Ft in size.