Erlenmeyer flasks from the Argonne National Laboratory.
Laboratory flasks are vessels or containers that fall into the category of laboratory equipment known as glassware. In laboratory and other scientific settings, they are usually referred to simply as flasks. Flasks come in a number of shapes and a wide range of sizes, but a common distinguishing aspect in their shapes is a wider vessel "body" and one (or sometimes more) narrower tubular sections at the top called necks which have an opening at the top. Laboratory flask sizes are specified by the volume they can hold, typically in metric units such as milliliters (mL or ml) or liters (L or l). Laboratory flasks have traditionally been made of glass, but can also be made of plastic.
At the opening(s) at top of the neck of some glass flasks such as round-bottom flasks, retorts, or sometimes volumetric flasks, there are outer (or female) tapered (conical) ground glass joints. Some flasks, especially volumetric flasks, come with a laboratory rubber stopper, bung, or cap for capping the opening at the top of the neck. Such stoppers can be made of glass or plastic. Glass stoppers typically have a matching tapered inner (or male) ground glass joint surface, but often only of stopper quality. Flasks which do not come with such stoppers or caps included may be capped with a rubber bung or cork stopper.
Flasks can be used for making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals, samples, solutions, etc. for chemical reactions or other processes such as mixing, heating, cooling, dissolving, precipitation, boiling (as in distillation), or analysis.
Laboratoryflasks are vessels or containers that fall into the category of laboratory equipment known as glassware. In laboratory and other scientific...
An Erlenmeyer flask, also known as a conical flask (British English) or a titration flask, is a type of laboratoryflask which features a flat bottom,...
A volumetric flask (measuring flask or graduated flask) is a piece of laboratory apparatus, a type of laboratoryflask, calibrated to contain a precise...
up flask in Wiktionary, the free dictionary. Flask may refer to: Hip flask, a small container used to carry a small amount of liquid Laboratoryflask, laboratory...
A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that slows the speed at which its contents change...
a Schlenk flask. A common straight bore glass stopcock attached with a plastic plug retainer in the side arm of a Schlenk flask. Laboratory glassware...
A Florence flask/boiling flask is a type of flask used as an item of laboratory glassware and is named after the city Florence. It is used as a container...
These flasks are often connected to Schlenk lines, which allow both operations to be done easily. Schlenk flasks and Schlenk tubes, like most laboratory glassware...
A laboratory (UK: /ləˈbɒrətəri/; US: /ˈlæbrətɔːri/; colloquially lab) is a facility that provides controlled conditions in which scientific or technological...
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dropping funnels have stopcocks which allow the fluids to be added to a flask slowly. For solids, a powder funnel with a short and wide neck/stem is more...
planet Earth representing the category "Geography" •Albert, a green laboratoryflask representing the category "Science" •Bonzo, an orange rugby football...
plate, or with a Bunsen burner. The reaction vessel (Florence flask, Erlenmeyer flask, or beaker) is immersed in the heated bath. A thermometer is usually...
reactants and solvent is placed in a suitable vessel, such as a round bottom flask. This vessel is connected to a water-cooled condenser, which is typically...
A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also...
than laboratoryflasks and beakers, but they should not be used to perform volumetric analysis; volumetric glassware, such as a volumetric flask or volumetric...
together. The pear-shaped flask allows the last drop of residue to be removed, compared with a similarly-sized round-bottom flask. The small holdup volume...
stir plate, orbital shakers, incubators) and flasks (e.g. culture flasks, spinner flasks, shaker flasks). These cultures need to be maintained with nutrient...
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