| Fleaker | |
 A 300 mL Erlenmeyer flask (left); two fleakers (center-left, with lid upside-down in front; center-right, with lid on; both also 300 mL each); and a 250 mL beaker (right)
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| Uses | Mixing Chemical reaction containment |
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| Inventor | Roy Eddleman |
| Related items | Flask Beaker |
A fleaker is a type of container for liquids used in the laboratory. The litre or liter (see spelling differences) is a unit of Volume. An Erlenmeyer flask, commonly known as a conical flask or E-flask, is a widely used type of Laboratory flask which features a conical base and a cylindrical A beaker is a simple container for stirring mixing and heating liquids commonly used in many laboratories 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 The Flux Advanced Security Kernel ( FLASK) is an Operating system security architecture that provides flexible support for security policies A beaker is a simple container for stirring mixing and heating liquids commonly used in many laboratories It can be described as a cross between the Griffin beaker and the Erlenmeyer flask. A beaker is a simple container for stirring mixing and heating liquids commonly used in many laboratories An Erlenmeyer flask, commonly known as a conical flask or E-flask, is a widely used type of Laboratory flask which features a conical base and a cylindrical
Like a beaker, the bottom is flat, with the sides meeting the bottom at a 90 degree angle. The sides are vertical for most of the height; near the top, the sides curve in to form a neck with a widely flared rim. The wide rim makes it easier to pour from or filter into; the narrow neck reduces loss of the contents due to splashing and serves as a grip for handling and pouring. Fleakers have a plastic lid with a built in rubber stopper. When on the fleaker, the lid covers the narrow neck. Fleakers work as well as other glassware for liquids and solutions, but are inappropriate for slurries, precipitates, and recrystallizations (since the narrow neck makes it difficult to remove solids completely from a fleaker).
The fleaker was invented by Roy Eddleman, founder of Spectrum Medical Industries (now Spectrum Laboratories).
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