Name & its Purpose of Glasswares in a Chemistry Laboratory
Beakers
A beaker is used to hold liquids. They are usually used in a scientific setting. Being glass, they can reach higher temperatures than plastic
Boiling tube
Butchner Flask
A Büchner flask or filter flask is mainly used in organic chemistry labs to remove unwanted solids from the liquids. The benefits of using a Büchner flask over a piece of filter paper held over a beaker is that the solid is dried as more liquid is sucked off of it by the vacuum.
Butchner Funnel
These funnels are designed to facilitate an easy made of pouring highly reactive chemicals from one flask to another and also these funnels come with an additional feature of having a perforated membrane at the base thereby ensuring the pouring of ultra filtered solutions and chemicals through it.
Burette
Burettes are used to dispense the known amounts of a liquid reagent in experiments. They are made from superior glass material making them tough and endurable.
Cold Finger
A cold finger is a piece of laboratory equipment that is used to generate a localized cold surface. Typically a cold finger is used in a sublimation apparatus, or can be used as compact version of a condenser in either reflux reaction or distillation apparatus.Condenser
A condenser is attached to the boiling flask, and cooling water is circulated to condense escaping vapors.
Crucible
Crucibles are used in chemistry laboratories as a way to contain chemical compounds or materials that are going to be subjected to high heat. Laboratory crucibles are generally made out of porcelain or an inert metal.
Cuvette
A cuvette is a piece of laboratory glassware that is intended to hold samples for spectroscopic analysis. Cuvettes are made from glass, plastic, or optical-grade quartz.
Erlenmeyer Flask
A conical bottom that extends into a slender cylindrical neck. This flask works well with mixing, boil, holding and heating chemicals. 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.
Erlenmeyer Bulb
An Erlenmeyer bulb is a round bottom flask. The end of the neck of the flask is typically a conical ground glass joint. This type of flask is often used when even heating or boiling of a sample is needed
Retort
A retort is a glassware device used for distillation or dry distillation of substances. It consists of a spherical vessel with a long downward-pointing neck. The liquid to be distilled is placed in the vessel and heated. The neck acts as a condenser, allowing the evaporated vapors to condense and flow along the neck to a collection vessel placed underneath.
Round BottomFlasks
The round bottoms on these types of flasks allow more uniform heating and/or boiling of liquid. Thus, round-bottom flasks are used in a variety of applications where the contents are heated or boiled. Round-bottom flasks are usually used in distillation by chemists as distilling flasks and receiving flasks for the distillate (see distillation diagram). One-neck round-bottom flasks are used as the distilling flasks in rotary evaporators.This flask shape is also more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface.
Schlenk Flask
A Schlenk flask, or Schlenk tube is a reaction vessel typically used in air sensitive chemistry, invented by Wilhelm Schlenk. It has a side arm fitted with a PTFE or ground glass stopcock which allows the vessel to be evacuated or filled with gases (usually inert gases like nitrogen or argon). These flasks are often connected to Schlenk lines which allow both operations to be done easily.
Seperatory Funnel
Separatory funnels are used to dispense liquids into other containers, usually as part of an extraction process. They are made of glass. Usually a ring stand is used to support them. Separatory funnels are open at the top, to add liquid and allow for a stopper, cork, or connector. The sloping sides help make it easier to distinguish layers in the liquid. The flow of liquid is controlled using a glass or teflon stopcock. Separatory funnels are used when you need a controlled flow rate,
Soxhlet Extractor
A Soxhlet extractor is used for the extraction of a lipid from a solid material. However, a Soxhlet extractor is not limited to the extraction of lipids. Typically, a Soxhlet extraction is only required where the desired compound has a limited solubility in a solvent, and the impurity is insoluble in that solvent. If the desired compound has a significant solubility in a solvent then a simple filtration can be used to separate the compound from the insoluble substance.
Test Tube
The test tube is a common piece of thin-walled glassware found in science labs around the world. Along with Bunsen burners, beakers and conical flasks, test tubes serve a number of purposes.
Thiele Tube
A Thiele tube is a piece of laboratory glassware that is designed to contain and heat an oil bath.
Thistle Tube
A thistle tube is a piece of chemistry glassware consisting of a long tube with a reservoir and funnel-like opening at one end. Thistle tubes may be used to add liquid through a stopper to an existing apparatus.
Volumetric Flask
Volumetric flasks are an item of laboratory glassware with a round or sometimes square bulbous base and a long neck for accurate measurement. These flasks typically come with a stopper made from a chemically resistant plastic. The VOLUMETRIC FLASK is used the measure one specific volume of liquid (kind of like a volumetric pipet).
Glass Watch
Watch glasses are concave dishes that have a variety of uses. They can serve as lids for flasks and beakers. Watch glasses are nice for holding small samples for observation under a low-power microscope. Watch glasses are used for evaporating liquid off of samples, such as growing seed crystals. They can be used for making lenses of ice or other liquids. Fill two watch glasses with liquid, freeze the liquid, remove the frozen material, press the flat sides together... lens!
Eudiometer
A eudiometer is a laboratory device that measures the change in volume of a gas mixture following a physical or chemical change
Florence Flask
A Florence flask (also known as a boiling flask) is a type of flask used as an item of laboratory glassware. It can be used as a container to hold solutions of chemicals. A Florence flask has a round body with a single long neck and with either a round or a flat bottom. A Florence flask with a flat bottom may stand upright alone on a flat surface; flasks with round bottoms need support to stand upright. It is designed for uniform heating and ease of swirling; it is produced in a number of different glass thicknesses to stand different types of use. They are often made of borosilicate glass to prevent cracks or defacing of the glass.
Freidrichs Condenser
A Freidrich condenser or Freidrich condenser is a spiralled finger condenser that offers a large surface area for cooling.
Funnel
A funnel is a conical piece of glassware that terminates in a narrow tube. It is used to transfer substances into containers that have narrow mouths. Funnels may be made of any material. A graduated funnel may be called a conical measure.
Gas Syringe
A gas syringe or gas collecting bottle is a piece of glassware used to insert, withdraw, or measure a volume of gas.
Glass Bottles
Glass bottles with ground glass stoppers are often used to store stock solutions of chemicals. To avoid contamination, it helps to use one bottle for one chemical. For example, the ammonium hydroxide bottle would only ever be used for ammonium hydroxide.
Graduated Cylinder
Graduated cylinders are used to measure volumes accurately. The can be used to calculate the density of an object if its mass is known. Graduated cylinders usually are made from borosilicate glass, though there are plastic cylinders, too. Common sizes are 10, 25, 50, 100, 250, 500, 1000 ml. Choose a cylinder such that the volume to be measured will be in the upper half of the container. This minimizes measurement error.
NMR Tubes
NMR tubes are thin glass tubes that are used to hold samples used for nuclear magnetic resonance spectroscopy. From left to right, these are flame, septum and polyethylene cap sealed NMR tubes.
Petri Dishes
Petri dishes come as a set, with a flat bottom dish and a flat lid that rests loosely over the bottom. The contents of the dish are exposed to air and light, but the air is exchanged by diffusion, preventing contamination of the contents by microorganisms. Petri dishes that are intended to be autoclaved are made from a borosilicate glass, such as Pyrex or Kimax. Single-use sterile or non-sterile plastic petri dishes also are available. Petri dishes commonly are used for culturing bacteria in a microbiology lab, containing small living specimens, and holding chemical samples.
Pipet
Pipets (pipettes) are used to measure and transfer small volumes . Pipets or pipettes are droppers calibrated to deliver a specific volume. Some pipets are marked like graduated cylinders. Other pipets are filled to a line to reliably deliver one volume again and again. Pipettes may be made of glass or plastic.
Pycnometer
A pcynometer or specific gravity bottle is a flask with a stopper that has a capillary tube through it, which allows air bubbles to escape. The pycnometer is used to obtain accurate measurements of density.
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