Post on 25-Dec-2015
transcript
Laboratory EquipmentLaboratory Equipment
Names and UsesNames and Uses
Wednesday, April 19, 2023Wednesday, April 19, 2023
Why Learn This?Why Learn This?
• Lab equipment should only be used for its intended purpose.
• In order to do labs safely, you need to know equipment names to get set up.
• So you can impress others with your vast chemistry knowledge.
TongsTongs
• Used to handle hot items.
• Are specialized to reduce the chance of dropping something.
• Types include: beaker, test tube, and crucible.
Hot Hand/Hot MittsHot Hand/Hot Mitts
• Used to handle hot objects.
• Remember hot and cold glass an metal looks the same - treat everything as if it is HOT!!
BeakersBeakers
• Beakers come in many sizes.
• Can be used for heating if they are PYREX.
• Measurements on beakers are only approximate.
Erlenmeyer FlaskErlenmeyer Flask
• Used to hold liquids.• Triangular shape with
a small opening helps prevent splatters when heating.
• Only use PYREX flasks for heating.
Florence FlaskFlorence Flask
• This kind of flask usually just holds liquids
• The small opening makes it easy to pour.
• Volumetric flasks have an etched line so you can measure accurately.
Test TubesTest Tubes
• Once again there are many different sizes.
• Used to contain or react small amounts of chemicals.
• Cleaned with a test tube brush.
Graduated CylindersGraduated Cylinders
• Come in various sizes.
• Used to accurately measure liquids.
• Make sure the collar is pushed up towards the top so it won’t break if it gets knocked over.
Heating Things UpHeating Things Up
• You use several pieces of equipment to safely heat things.
• These include: bunsen burners, iron rings, wire gauze, clay or wire triangles, and clamps.
Hot PlatesHot Plates
• Hot plates are less dangerous than an open flame.
• Some have automatic stirrers.
Strikers and MatchesStrikers and Matches
• A striker is a device used to light a burner.
• We will use strikers, NOT matches to light fires.
Crucibles and Evaporating Crucibles and Evaporating DishesDishes
• Used to dry things out either over a flame, on a hot plate, or in an oven.
• Crucibles have lids to prevent splatter.
Electronic BalanceElectronic Balance
• This balances is electronic.
• Accuracy is very important when you measure out chemicals.
• The tare button sets the balance to zero.
Spatulas and SpoonsSpatulas and Spoons
• Used to transfer chemicals from the bulk container to the balance for measuring.
• Always use a separate spatula for each chemical.
ThermometersThermometers
• Use alcohol thermometers if possible.
• Check to make sure the column doesn’t have gaps
• NEVER rest a thermometer in heating glassware.
BuretsBurets
• Burets are very accurate devices used to measure liquids.
• They have a device called a stopcock at the bottom.
Miscellaneous EquipmentMiscellaneous Equipment
• Other small pieces you might use during a lab include: forceps, microplates, test tube racks, droppers and stoppers.