right|thumb|100px|Graduated cylinder. Ring at top is used to prevent breakage if knocked over. A graduated cylinder or measuring cylinder is a piece of laboratory glassware used to accurately measure out volumes of chemicals for use in reactions. They are generally more accurate and precise for this purpose than flasks. Often, the largest graduated cylinders are made of polyethylene or other rigid plastic, making them lighter and less fragile than glass, but are less solvent-resistant and more difficult to sterilize. Brown glass jars with some clear lab glassware in the background Laboratory glassware refers to a variety of equipment, traditionally made of glass, used for scientific experiments and other work in science, especially in chemistry and biology laboratories. ... This article does not cite any references or sources. ... Sterilization (or sterilisation) refers to any process that effectively kills or eliminates transmissible agents (such as fungi, bacteria, viruses and prions) from a surface, equipment, foods, medications, or biological culture medium. ...
Graduatedcylinders are used to measure the volume of liquid samples and are available in many different sizes.
The measurement accuracy of a graduatedcylinder is rather poor (may be as much as 10% off) so you must consider the desired accuracy before choosing to use a graduatedcylinder.
Generally, graduatedcylinders are not appropriate for the preparation of analytical solutions - pipets, volumetric flasks, and burets should be used instead.
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