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Physical Description
An Erlenmyer Flask (named after Emil Erlennmeyer) is a common piece of laboratory glassware since 1861. It is also known as as a conical flask or E-flask. It has a conical body, flat base and a narrow cylindrical neck. The flask is usually marked to indicate the approximate volume of their contents.
The flask is chosen to replace a beaker if there is a need to stopper the contents. The narrow neck is sized to accept standard rubber stoppers or corks.
The conical shape and narrow neck facilitates stirring by swirling.
The small neck reduces evaporates losses. The neck may be fitted with side tubes to allow the extraction of produced gases
The flat bottom improves stability on lab benches. A Florence flask has a similar overall use but is more unstable because the body is round and the base is smaller.
Uses
Erlenmeyer flasks are used for:
- pH tit rations
- the preparation of mixtures which must be mixed without Starr
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MaxineErlenmeyer flasks are commonly used in laboratories for mixing, storing, or heating liquids. Their conical shape helps in swirling liquids without spilling and allows for easy handling and pouring. They are often used for titrations, chemical reactions, and cultures in microbiology.
Erlenmeyer flasks are used to measure, mix, and store liquids.
Erlenmeyer flasks are often used to heat liquids, e.g. with a Bunsen burner. For that purpose, 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. An alternative way to set up the apparatus is to hold the flask by the neck with a test tube clamp fixed to the stand.
If the flask is to be heated in an oil or water bath, a 'C' shaped lead or iron weight may be placed over the conical part of the flask to prevent it from floating in the bath.
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.
There are pictures of erlenmeyer flasks at the related link.
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What glasswear do you use to heat a solid?
a crucible and cover
What is the difference between a florence flask and an erlenmeyer flask?
A Florence flask has a round bottom and a long neck, often used for heating liquids evenly. An Erlenmeyer flask has a flat bottom and a conical shape, commonly used for mixing and storing liquids. Florentine flasks are better suited for distillation or reflux processes, while Erlenmeyer flasks are more versatile for general laboratory use.
Why is the Erlenmeyer flask written with a capital letter?
The Erlenmeyer flask is named after the German chemist Emil Erlenmeyer, and proper nouns like names are typically capitalized in English. In scientific literature, it is important to maintain consistency and accuracy in naming conventions, hence the capitalization of "Erlenmeyer."
What instrument is used in measuring?
Titration involves the use of a buret and also an Erlenmeyer flask or beaker (where it is measured).
Are all Erlenmeyer flask the same in weight?
No, Erlenmeyer flasks can vary in weight depending on the material they are made from. Glass Erlenmeyer flasks are typically heavier than plastic Erlenmeyer flasks due to the density of glass. Additionally, the size and volume capacity of the flask can also affect its weight.
