A glass iodine flask is a specialized laboratory glassware used in chemical reactions that involve iodine. The flask is typically Conical in shape, with a narrow neck and a Glass Stopper for a secure seal. The flask is made of durable, chemically-resistant glass, and is designed to withstand exposure to iodine and its derivatives.

The flask is commonly used for storing, mixing, and dispensing iodine, as well as for conducting iodine-based reactions. The capacity of the flask can vary, but it is typically small, to accommodate the small amounts of iodine that are used in laboratory experiments.