The collecting flask, also known as a receiving flask, is an essential piece of laboratory equipment used for collecting and storing liquids and gases. Other synonyms for collecting flask include, but are not limited to: receiver, reservoir, container, vessel, or catchpot. These terms are often used interchangeably depending on the specific application and industry. The collecting flask is typically made of glass or plastic materials and comes in a variety of sizes, shapes, and designs to accommodate a range of experimental needs. Its importance in chemical and biological research cannot be overstated, as it represents a crucial component in the process of collecting, measuring, and analyzing various substances.