Laboratory flask

Laboratory Flask

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Laboratory flask

Laboratory flasks are vessels (containers) which fall into the category of laboratory

Laboratory

A laboratory is a facility that provides controlled conditions in which science research, experiments, and measurement may be performed. The title of laboratory is also used for certain other facilities where the processes or equipment used are similar to those in scientific laboratories....
equipment known as glassware

Laboratory glassware

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 laboratory....
. 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.

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Encyclopedia

Laboratory flasks are vessels (containers) which fall into the category of laboratory

Laboratory

Laboratory glassware

Litér

Lit?r is a village in Veszpr?m , Hungary.External links ...
s (L or l). Laboratory flasks have traditionally been made of glass

Glass

Glass generally refers to a Hardness, brittle, transparency amorphous solid, such as that used for windows, many Glass Bottles, or eyewear, including, but not limited to, soda-lime glass, borosilicate glass, acrylic glass, sugar glass, Muscovite , or aluminium oxynitride....
, but can also be made of plastic

Plastic

Plastic is the general common term for a wide range of synthetic or semisynthetic organic chemistry solid materials suitable for the manufacture of industrial products....
.

At the opening(s) at top of the neck of some glass flasks such as round-bottom flask

Round-bottom flask

Round-bottom flasks are types of flasks having spherical bottoms used as laboratory glassware, mostly for chemistry or biochemistry work. They are typically made of glass for chemical inertness; and in modern days, they are usually made of heat-resistant borosilicate glass....
s, retort

Retort

In a chemistry laboratory, a retort is a glassware device used for distillation or dry distillation of substances. It consists of a sphere vessel with a long downward-pointing neck....
s, or sometimes volumetric flask

Volumetric flask

A volumetric flask is a piece of laboratory glassware used in analytical chemistry for the preparation of solutions. It is made of glass or plastic and consists of a flat bottomed bulb with a long neck, usually fitted with a stopper....
s, there are outer (or female) tapered (conical) ground glass joint

Ground glass joint

Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from commonly available parts. For example, a round bottom flask, Liebig condenser, and oil bubbler with ground glass joints may be rapidly fitted together to reflux a reaction mixture....
s. Some flasks, especially volumetric flasks, come with a stopper 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

Cork (material)

Cork material is a prime-subset of generic Cork cambium, harvested for commercial use primarily from the Cork Oak tree, Quercus suber, with Portugal producing 50% of cork worldwide....
stopper.

Flasks can be used for making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals, samples, solution

Solution

In chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is dissolved in another substance, known as a solvent....
s, etc. for chemical reaction

Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants....
s or other processes such as mixing, heating, cooling, dissolving, precipitation

Precipitation (chemistry)

Precipitation is the formation of a solid in a solution during a chemical reaction. When the reaction occurs, the solid formed is called the precipitate, and the liquid remaining above the solid is called the supernate....
, boiling

Boiling

Boiling, a type of phase transition, is the rapid vaporization of a liquid, which typically occurs when a liquid is heated to its boiling point, the temperature at which the vapor pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding environmental pressure....
(as in distillation

Distillation

Distillation is a method of separation process mixtures based on differences in their Volatility in a boiling liquid mixture. Distillation is a unit operation, or a physical separation process, and not a chemical reaction....
), or analysis.

List of flasks

There are several types of laboratory flasks, all of which have different functions within the laboratory. The most common types of flask are:

Legal Issues

Like many other common pieces of glassware, Erlenmeyer flasks could potentially be used in the production of illegal narcotics. In an effort to restrict such production, some U.S. states (including Texas) have begun requiring permits to purchase such glassware, including Erlenmeyer flasks, as well as chemicals identified as common starting materials. (PDF)