What is the function of a volumetric flask?

A volumetric flask is glassware used in laboratories for measuring volume in the preparation of solutions and holds a precise amount of liquid material when at room temperature. These flasks are calibrated using global standards and come in sizes up to 10,000 milliliters.

Volumetric flasks have long necks with a fill line on the neck for accurate measure. The lower area is a bulb shape with a flat bottom for sitting on a table or burner. These flasks are considered the most precise way of measuring liquids as opposed to beakers or cylinders. The Kohlrausch volumetric flask is designed for accurate measurements of solids for dissolving in volumetric solutions.