Wiktionary
n. (context chemistry English) A glass flask used in a laboratory for holding chemical liquids and solutions. They are similar in shape to a Florence flask, but with a longer neck and wider flat bottom. The neck is marked so that a particular volume of liquid can be measured with high precision.
Wikipedia
A volumetric flask (measuring flask or graduated flask) is a piece of laboratory glassware, a type of laboratory flask, calibrated to contain a precise volume at a particular temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions. These flasks are usually pear-shaped, with a flat bottom, and made of glass or plastic. The flask's mouth is either furnished with a plastic snap/screw cap or fitted with a joint to accommodate a PTFE or glass stopper. The neck of the volumetric flasks is elongated and narrow with an etched ring graduation marking. The marking indicates the volume of liquid contained when filled up to that point. The marking is typically calibrated "to contain" (marked "TC" or "IN") at 20 °C and indicated correspondingly on a label. The flask's label also indicates the nominal volume, tolerance, precision class, relevant manufacturing standard and the manufacturer’s logo. The volumetric flasks are of various sizes, containing from 1 to 20 000 mL of liquid.
Usage examples of "volumetric flask".
He determined his capacity as impersonally as though his physical body were a volumetric flask.
The chemist, a cheerful youngster, was, whistling as he tipped up a volumetric flask, in which the solution had already been made up, to volume.
The chemist, a cheerful youngster, was whistling as he tipped up a volumetric flask, in which the solution had already been made up to volume.