Graduated cylinder


Graduated cylinder
Graduated cylinders-diagrams.svg

A graduated cylinder, measuring cylinder or graduate is a piece of laboratory equipment used to accurately measure the volume of a liquid. Water displacement can be used to find out the volume of a solid. Graduated cylinders are generally more accurate and precise for this purpose than flasks and beakers. Often, the largest graduated cylinders are made of polypropylene for its excellent chemical resistance or polymethylpentene for its transparency, making them lighter and less fragile than glass. Polypropylene is easy to repeatedly autoclave; however, autoclaving in excess of about 130 °C (266 °F) (depending on the chemical formulation: typical commercial grade polypropylene melts in excess of 160 °C (320 °F)),can warp or damage polypropylene graduated cylinders, affecting accuracy.

A traditional cylinder (A in the image) is usually narrow and high (so as to increase the accuracy of volume measurement) and has a plastic or glass stem and a "spout" for easy pouring from the measured liquid. Certain types of cylinders (B in the picture) have ground glass joints instead of a "spout", so that they can be closed with a stopper or connect directly with other elements of a manifold; they are also known as mixing cylinders.[1] With this kind of cylinder, the metered liquid does not pour directly, but is often removed using cannula. A graduated cylinder is meant to be read with the surface of the liquid at eye level, where the center of the meniscus shows the measurement line. Typically the accuracy of the graduated cylinder is +/-0.05 mL. The measuring cylinder is normally and most commonly used in laboratories.

types

  • V = 3inch3type;
  • V = 15inch3type;
  • V = 30inch3type

,as volume, v

Gallery



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Look at other dictionaries:

  • Graduated cylinder — Graduated Grad u*a ted, a. 1. Marked with, or divided into, degrees; divided into grades. [1913 Webster] 2. (Zo[ o]l.) Tapered; said of a bird s tail when the outer feathers are shortest, and the others successively longer. [1913 Webster] 3.… …   The Collaborative International Dictionary of English

  • graduated cylinder — n. a thin, cylindrical container that is scaled, usually in milliliters: used as in a laboratory to measure and pour exact amounts of a liquid * * * …   Universalium

  • graduated cylinder — n. a thin, cylindrical container that is scaled, usually in milliliters: used as in a laboratory to measure and pour exact amounts of a liquid …   English World dictionary

  • graduated cylinder — matavimo cilindras statusas T sritis Standartizacija ir metrologija apibrėžtis Cilindras su padalomis tūriui matuoti. atitikmenys: angl. graduated cylinder; measuring cylinder vok. Messzylinder, m rus. градуированный цилиндр, m; измерительный… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • graduated cylinder — matavimo cilindras statusas T sritis chemija apibrėžtis Cilindras su padalomis tūriui matuoti. atitikmenys: angl. graduated cylinder; measuring cylinder rus. градуированный цилиндр; измерительный цилиндр; мерный цилиндр …   Chemijos terminų aiškinamasis žodynas

  • graduated cylinder — matavimo cilindras statusas T sritis fizika atitikmenys: angl. graduated cylinder; measuring cylinder vok. Maßzylinder, m; Meßzylinder, m rus. градуированный цилиндр, m; мерный цилиндр, m pranc. cylindre de mesure, m …   Fizikos terminų žodynas

  • graduated cylinder — noun An item of glass laboratory equipment consisting of a tall, narrow cylinder with a scale, or graduations marked up its length, which is used to measure liquids and solutions fairly accurately, but not precisely …   Wiktionary

  • graduated cylinder — noun Date: 1948 a tall narrow container with a volume scale used especially for measuring liquids …   New Collegiate Dictionary

  • graduated cylinder — noun a cylindrical graduate • Hypernyms: ↑graduate …   Useful english dictionary

  • Graduated — Grad u*a ted, a. 1. Marked with, or divided into, degrees; divided into grades. [1913 Webster] 2. (Zo[ o]l.) Tapered; said of a bird s tail when the outer feathers are shortest, and the others successively longer. [1913 Webster] 3. Having visible …   The Collaborative International Dictionary of English


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