Which of the following is not a function of a graduated cylinder?

A graduated cylinder is primarily designed for accurate measurement of liquid volumes. It features markings along its length that allow for precise readings, making it an essential tool in laboratory settings for quantifying liquids.

The act of mixing solutions is not a primary function of a graduated cylinder. While it may be physically possible to mix liquids in one, it is not advisable nor efficient, as the design of a graduated cylinder—tall and narrow—does not facilitate effective mixing. Typically, containers like beakers or flasks are used for this purpose as they provide a wider base and greater stability, allowing for better swirling and agitation of solutions.

Additionally, graduated cylinders are indeed used for storing liquids temporarily, but this is not their intended purpose since prolonged storage can lead to contamination or alteration of the substance being stored. Therefore, while storing liquids is possible, it falls outside the primary functions of a graduated cylinder, which are accurate measurement and dispensing rather than storing or mixing.