Erlenmeyer flask

Erlenmeyer flask
Erlenmeyer flask
Different Erlenmeyer flasks

An Erlenmeyer, also known as a conical flask, is a widely used type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck. [1] It is named after the German chemist Emil Erlenmeyer, who created it in 1861. [2] [3]

The Erlenmeyer is usually marked on the side (graduated) to indicate the approximate volume of contents, and has a spot of ground glass or enamel where it can be labeled with a pencil. It differs from the beaker in its tapered body and narrow neck. [4]

Original drawing of the Erlenmeyer flask.

The opening usually has a slight rounded lip so that the Erlenmeyer can be easily stoppered using a piece of cotton wool, rubber bung or similar. Alternatively, the neck may be fitted with a female ground glass joint to accept a glass stopper. The conical shape allows the contents to be swirled or stirred during an experiment, either by hand or by a shaker; the narrow neck keeps the contents from spilling out. The small neck reduces evaporative losses compared to a beaker, while the flat bottom of the conical flask makes it unlikely to tip over and spill.



Conical flask used in a Titration setup.

Erlenmeyers are used in chemistry labs for titration, e.g. for pH, as they can be held and the contents mixed single-handed leaving the other hand free to add reagent. [5]

Erlenmeyer flasks are suitable for heating liquids, e.g. with a Bunsen burner. The flask is usually placed on a ring held to a ring stand by means of a ring clamp. A wire gauze mesh or pad is usually placed between the ring and the flask to prevent the flames from directly touching the glass in the same manner as for a beaker. When heating (or cooling) in a water bath the flask can be clamped by the neck to a stand or a hooped weight may be placed over the conical part of the flask to prevent it from floating in the bath. [6]

Erlenmeyers are also used in microbiology for the preparation of microbial cultures. Plastic Erlenmeyer flasks used in cell culture are pre-sterilized and feature closures and vented closures to enhance gas exchange during incubation and shaking.

See also

External links


  1. ^ "Flasks, Erlenmeyer Conical Flask with Plain Neck, Flask Volumetric, Flask Volumetric Measuring JSGW with Interchangeable Stopper, Accuracy as per Classes B, Flasks Boiling, Flat Bottom JSGW." IndiaMART - Indian Manufacturers Suppliers Exporters Directory,India B2B Exporter Manufacturer. Web. 17 Nov. 2011. <>.
  2. ^ Erlenmeyer Flask. Web. 17 Nov. 2011. <>.
  3. ^ "Erlenmeyer Flask | Erlenmeyer Flask." Erlenmeyer Flask|Graduated Cylinder|Triple Beam Balance|Petri Dish|Lab Bench. Web. 17 Nov. 2011. <>.
  4. ^ "Laboratory Glassware,Double Distillation Apparatus,Quartz Distillation Apparatus,Laboratory Condensers,Double Water Still System,Water Still System." Laboratory Glass Equipment,Borosilicate Glass Equipment,Laboratory Glass Equipment Manufacturer,Borosilicate Glass Equipment Manufacturer. Web. 17 Nov. 2011. <>.
  5. ^ "Erlenmeyer Flask." The Titi Tudorancea Learning Center, English Edition. Web. 17 Nov. 2011. <>.
  6. ^

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Look at other dictionaries:

  • Erlenmeyer flask — Flask Flask, n. [AS. flasce, flaxe; akin to D. flesch, OHG. flasca, G. flasche, Icel. & Sw. flaska, Dan. flaske, OF. flasche, LL. flasca, flasco; of uncertain origin; cf. L. vasculum, dim. of vas a vessel, Gr. ?, ?, ?. Cf. {Flagon}, {Flasket}.] 1 …   The Collaborative International Dictionary of English

  • Erlenmeyer flask — [ʉr′lən mī΄ər, er′lən mī΄ər] n. [after Emil Erlenmeyer (1825 1909), Ger chemist] [also e f ] a conical laboratory flask with a flat bottom and a short, straight neck …   English World dictionary

  • Erlenmeyer flask — noun A glass laboratory flask of a conical profile with a narrow tubular neck and a flat bottom, used to manipulate solutions, or to carry out titrations. An assistant arrived with a wheeled cart bearing coffee in an Erlenmeyer flask, cups, and a …   Wiktionary

  • Erlenmeyer flask — kūginė kolba statusas T sritis chemija apibrėžtis Plokščiadugnė kolba. atitikmenys: angl. conical flask; Erlenmeyer flask rus. колба Эрленмейера; конусообразная колба ryšiai: sinonimas – Erlenmejerio kolba …   Chemijos terminų aiškinamasis žodynas

  • Erlenmeyer flask — Er·len·mey·er flask .ər lən .mī( ə)r , .er lən n a flat bottomed conical flask whose shape allows the contents to be swirled without danger of spilling Er·len·mey·er er lən .mī( ə)r, ər Richard August Carl Emil (1825 1909) German chemist.… …   Medical dictionary

  • Erlenmeyer flask — Er′len•mey•er flask [[t]ˈɜr lənˌmaɪ ər, ˈɛr [/t]] n. chem. cer a conical flask with a wide base and narrow neck, used in laboratories for swirling liquids • Etymology: 1885–90; after E. Erlenmeyer (1825–1909), German chemist …   From formal English to slang

  • Erlenmeyer flask — /ˈɜlənmaɪə ˌflask/ (say erluhnmuyuh .flahsk) noun a flat bottomed, conical flask with a narrow neck, widely used in chemical laboratories. {named after E Erlenmeyer, died 1909, German chemist} …  

  • Erlenmeyer flask — noun Etymology: Emil Erlenmeyer Date: 1886 a flat bottomed conical laboratory flask …   New Collegiate Dictionary

  • Erlenmeyer flask — /err leuhn muy euhr, er / a flask having a wide base, narrow neck, and conical form, convenient in laboratory experimentation for swirling liquids by hand. [1885 90; named after E. Erlenmeyer (d. 1909), German chemist] * * * …   Universalium

  • Erlenmeyer flask — laboratory flask with a narrow neck and a wide base that is used to mix fluids (designed by Richard August Carl Emil Erlenmeyer) …   English contemporary dictionary

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