Lab apparatus
Transcript of Lab apparatus
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Lab apparatus
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Beaker
Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.
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Conical flask
Conical (or Erlenmeyer) flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.
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Measuring cylinder
A graduated measuring cylinder is used to measure volumes of liquids.
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Test tubes13 x 100 mm test tubes
10 x 75 mm test tubes
Boilingtube
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Test tube holder
A test tube holder is useful for holding a test tube which is too hot to handle.
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Test tube racks
Test tube racks are for holding and organizing test tubes on the laboratory counter. Plastic racks may melt in contact with very hot test tubes.
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Rubber bungs
Rubber bungs or stoppers are used to close containers to avoid spillage or contamination.
Containers should never be heated when there is a stopper in place.
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Watch Glass
A watch glass is used to hold a small amount of solid, such as the product of a reaction.
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Stirring Rod
A glass rod is used to manually stir solutions. It can also be used to transfer a single drop of a solution.
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Funnel
A funnel is used to aid in the transfer of liquid from one vessel to another.
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Pipette
A pipette or medicine dropper is used to transfer a small volume of liquid (less than one mL).
On top of each dropper is a “rubber bulb”
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Spatulas
Spatulas are used to dispense solid chemicals from their containers.
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Forceps
Forceps (or tweezers) are used to pick up small objects.
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Scalpel
A scalpel is an extremely sharp bladed instrument used for surgery and dissections.
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Burette
A burette is used to deliver exact volumes of liquids, often during titrations.
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Bunsen burner
Bunsen burners are used for the heating of nonvolatile liquids and solids.
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Tripod
A tripod is used to support glassware, such as beakers and flasks, especially when heating substances.
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Gauze
A wire gauze sits on a tripod to provide a place to stand a beaker.
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Heatproof mat
A heat proof mat is used to prevent damage to a work surface from a hot object.
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Clay Triangle
The clay triangle is used as a support for porcelein crucibles when being heated over a Bunsen burner.
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Evaporating Dish
The evaporating dish is used for the heating of stable solid compounds and elements.
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Crucible
Crucibles are used for heating certain solids, particularly metals, to very high temperatures.
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Crucible Tongs
For handling hot crucibles; also used to pick up other hot objects. NOT to be used for picking up beakers!
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Clamp stand
A clamp stand (or retort stand) is used to hold test tubes and other equipment in place. Also known as a ringstand.
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Clamp stand
Boss
Clamp
Clamp stand
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Litmus Paper
Red litmus paper is used to identify bases.
Blue litmus paper is used to identify acids.
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Universal indicator paper
Used to identify the pH of substances.