Lab Equipment

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Presentation Transcript

Lab Equipment : 

Lab Equipment

Beaker : 

Beaker Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.

Erlenmeyer Flask : 

Erlenmeyer Flask Erlenmeyer flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.

Florence Flask : 

Florence Flask Rarely used in first year chemistry, it is used for the mixing of chemicals. Narrow neck prevents splash exposure.

Graduated Cylinder : 

Graduated Cylinder A graduated cylinder is used to measure volumes of liquids.

Gas Collecting Bottle : 

Gas Collecting Bottle We use gas collecting bottles when large volumes of gases are produced, and must be collected by the displacement of water.

Test Tubes : 

Test Tubes 13 x 100 mm test tubes 10 x 75 mm test tubes Ignition tube

Test Tube Holder : 

Test Tube Holder A test tube holder is useful for holding a test tube which is too hot to handle.

Test Tube Brushes : 

Test Tube Brushes Test tube brushes are used to clean test tubes and graduated cylinders. Forcing a large brush into a small test tube will often break the tube.

Test Tube Racks : 

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.

Rubber Stoppers : 

Rubber Stoppers Rubber stoppers are used to close containers to avoid spillage or contamination. Containers should never be heated when there is a stopper in place.

Spot Plates : 

Spot Plates Spot plates are used when we want to perform many small scale reactions at one time. We will use these many times during the year.

Watch Glass : 

Watch Glass A watch glass is used to hold a small amount of solid, such as the product of a reaction.

Glass Stir Rod : 

Glass Stir Rod A glass rod is used to manually stir solutions. It can also be used to transfer a single drop of a solution.

Medicine Dropper : 

Medicine Dropper A medicine dropper is used to transfer a small volume of liquid (less than one mL). On top of each medicine dropper is a “rubber bulb”

Litmus Paper : 

Litmus Paper Red litmus paper is used to identify bases. Blue litmus paper is used to identify acids.

Forceps : 

Forceps Forceps (or tweezers) are used to pick up small objects.

Funnel : 

Funnel A funnel is used to aid in the transfer of liquid from one vessel to another.

Mohr Pipet : 

Mohr Pipet A Mohr pipet measures and delivers exact volumes of liquids.

Wash Bottle : 

Wash Bottle A wash bottle has a spout that delivers a wash solution to a specific area. Distilled water is the only liquid that should be used in a wash bottle.

Weighing Boat : 

Weighing Boat Weighing boats are used to weigh solids that will be transferred to another vessel.

Spatulas : 

Spatulas Spatulas are used to dispense solid chemicals from their containers. Chemicals should never be transferred with your bare hands.

Beaker Tongs : 

Beaker Tongs Beaker tongs are used to move beakers containing hot liquids

Bunsen Burner : 

Bunsen Burner Bunsen burners are used for the heating of nonvolatile liquids and solids.

Evaporating Dish : 

Evaporating Dish The evaporating dish is used for the heating of stable solid compounds and elements.

Crucible : 

Crucible Crucibles are used for heating certain solids, particularly metals, to very high temperatures.

Clay Triangle : 

Clay Triangle The clay triangle is used as a support for porcelein crucibles when being heated over a Bunsen burner.

Crucible Tongs : 

Crucible Tongs For handling hot crucibles; also used to pick up other hot objects. NOT to be used for picking up beakers!

Glass Plates : 

Glass Plates Glass plates provide a surface for semi-micro scale experiments, such as drop reactions and testing of acids and bases.

Triangular File : 

Triangular File Triangular files are used primarily to cut glass rod, a skill that your instructor will share with you when it becomes useful.

Ringstands and their Components : 

Ringstands and their Components Ringstands are a safe and convenient way to perform reactions that require heating using a Bunsen burner.

Ringstands and their ComponentsIron Rings : 

Ringstands and their ComponentsIron Rings Iron rings connect to a ringstand and provide a stable, elevated platform for the reaction.

Ringstands and their ComponentsUtility Clamps : 

Ringstands and their ComponentsUtility Clamps Utility clamps are used to secure test tubes, distillation columns, and burets to the ringstand.

Ringstands and their ComponentsDouble Buret Clamps : 

Ringstands and their ComponentsDouble Buret Clamps Double Buret clamps are used to burets – long graduated tubes used in titration.

Ringstands and their ComponentsWire Gauze : 

Ringstands and their ComponentsWire Gauze Wire gauze sits on the iron ring to provide a place to stand a beaker. On older wire gauze, the white material is asbestos!

Pressed Fiber Pad : 

Pressed Fiber Pad A 4” x 4” square of ceramic fiber, it provides a surface for hot beakers so that the beaker does not come in contact with a cold countertop and shatter.

Strikers : 

Strikers Strikers are used to light Bunsen burners. The flints on strikers are expensive. Do not operate the striker repeatedly just to see the sparks!

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