lab equipment. balance digital digital triple beam triple beam measures mass measures mass unit is a...

Lab EquipmentLab Equipment

BalanceBalance

Digital Digital Triple beam Triple beam Measures massMeasures mass Unit is a gramUnit is a gram

BeakersBeakers

Hold substancesHold substances ContainersContainers Measure liquid volumeMeasure liquid volume General measurementGeneral measurement Different sizesDifferent sizes

Bunsen BurnerBunsen Burner Heating deviceHeating device Burns a stream of a flammable gasBurns a stream of a flammable gas Not invented by German chemist Not invented by German chemist

Robert BunsenRobert Bunsen Named after himNamed after him Actually an improvement made by Actually an improvement made by

his laboratory assistant on an his laboratory assistant on an earlier design by Michael Faraday earlier design by Michael Faraday

The improvement is called a Tirrill The improvement is called a Tirrill Burner Burner

BuretBuret Long, vertical piece of glasswareLong, vertical piece of glassware Calibrated on its full length Calibrated on its full length Stopcock on the bottomStopcock on the bottom Used to dispense known amounts of Used to dispense known amounts of

a liquida liquid Used when precision is necessaryUsed when precision is necessary Titration experimentsTitration experiments EXPENSIVE !!!EXPENSIVE !!!

CruciblesCrucibles

A cup-shaped piece of A cup-shaped piece of equipment equipment

Used to contain Used to contain substances when heating substances when heating them to very high temps them to very high temps

The crucible is usually The crucible is usually made of porcelainmade of porcelain

Usually has a lidUsually has a lid

Erlenmeyer FlaskErlenmeyer Flask Widely used glass Widely used glass

container container Has a narrow neckHas a narrow neck Wide baseWide base Can be stoppered or Can be stoppered or

swirled swirled Again general measurmentAgain general measurment Named after Richard Named after Richard

ErlenmeyerErlenmeyer German chemist, 1861German chemist, 1861

Evaporating DishEvaporating Dish

Shallow bowl with lipShallow bowl with lip PorcelainPorcelain Used to heat and Used to heat and

evaporate liquidsevaporate liquids

ForcepsForceps Hinged instrument used for grasping Hinged instrument used for grasping

and holding objectsand holding objects Not called “tweezers” in labNot called “tweezers” in lab Metal or plastic Metal or plastic

FunnelsFunnels Cone shaped openingCone shaped opening Narrow stemNarrow stem Glass or plasticGlass or plastic Used to separate spoils Used to separate spoils

from liquidsfrom liquids Filter paper cones trap Filter paper cones trap

solidssolids

Graduated CylinderGraduated Cylinder ExpensiveExpensive Measure liquid Measure liquid

volume volume Calibrated Calibrated

accuratelyaccurately Bumper guardsBumper guards

on many on many Different sizesDifferent sizes

Mortar and PestleMortar and Pestle

A tool used to grind and A tool used to grind and mix substancesmix substances

Pestle is a heavy stick Pestle is a heavy stick whose end is used for whose end is used for pounding and grindingpounding and grinding

Mortar is a heavy bowlMortar is a heavy bowl Often ceramicOften ceramic

PipetsPipets Dropper pipetsDropper pipets Plastic pipets Plastic pipets Measuring pipetsMeasuring pipets Used to transfer Used to transfer

small volumes of small volumes of liquidsliquids

Pipet PumpsPipet Pumps Attaches to pipetAttaches to pipet Uses wheel to draw Uses wheel to draw

up liquid up liquid Accurately and Accurately and

effectively moves effectively moves liquid into pipetliquid into pipet

Controls the Controls the dispensing of dispensing of liquidsliquids

Ring StandRing Stand

A metal support stand A metal support stand Consists of a long upright Consists of a long upright

rod attached to a heavy rod attached to a heavy rectangular base rectangular base

Used with rings and Used with rings and clamps clamps

Use in supporting Use in supporting laboratory glassware laboratory glassware

Ring Clamps or Iron Rings Ring Clamps or Iron Rings

Connect to ring Connect to ring standstand

Can be used with Can be used with wire gauze wire gauze

Support a variety of Support a variety of lab glasswarelab glassware FunnelsFunnels Beakers Beakers CruciblesCrucibles

Safety GogglesSafety Goggles

Used to protect the eyesUsed to protect the eyes Worn during all labsWorn during all labs

ScoopulaScoopula

Metal scoopMetal scoop Used to transfer small Used to transfer small

amounts of solidsamounts of solids

Stir RodsStir Rods

Long, narrow rodLong, narrow rod Generally glassGenerally glass Used to stir or mix Used to stir or mix

solutionssolutions

StoppersStoppers Plug openings in Plug openings in

glassware glassware Used to contain Used to contain

liquids in flasks and liquids in flasks and test tubestest tubes

Corks and rubber Corks and rubber stoppersstoppers

Different sizes Different sizes Some have holesSome have holes

Glass tubing Glass tubing ThermometersThermometers

Test TubesTest Tubes Finger length glass tubeFinger length glass tube Sealed on one endSealed on one end Lip on other end for Lip on other end for

easy pouringeasy pouring Holds small samples, Holds small samples,

usually liquidsusually liquids Easily heated to boilingEasily heated to boiling Samples easily Samples easily

observedobserved

Test Tube BrushTest Tube Brush

Narrow brushNarrow brush Used to clean test tubesUsed to clean test tubes Different sizesDifferent sizes Never forced into tubeNever forced into tube

Test Tube HolderTest Tube Holder

AKA test tube AKA test tube clampclamp

Made out of wire Made out of wire Holds test tubesHolds test tubes You hold it in your You hold it in your

hand and squeeze hand and squeeze on the handles to on the handles to open the other open the other endend

Test Tube RackTest Tube Rack Can be made of Can be made of

different materialsdifferent materials Can have different Can have different

shapesshapes Holds test tubes Holds test tubes

when:when: A reaction is A reaction is

occurringoccurring Observations are Observations are

mademade When they are not When they are not

neededneeded

ThermometerThermometer

Device that measures Device that measures temperature temperature

The word thermometer is The word thermometer is derived from two smaller derived from two smaller word fragments:word fragments: thermothermo from the Greek for heat from the Greek for heat metermeter from Greek, meaning to from Greek, meaning to

measuremeasure Two important parts:Two important parts:

Bulb containing a liquidBulb containing a liquid Scale to measure changeScale to measure change

ThermometerThermometer Not mercuryNot mercury Generally alcohol based liquidGenerally alcohol based liquid

which rises or falls as it expands or contracts which rises or falls as it expands or contracts with changes in temperature with changes in temperature

Colored Colored Have roll guardHave roll guard ScalesScales

May be twoMay be two Use CelsiusUse Celsius

TongsTongs

Crucible tongsCrucible tongs Beaker tongsBeaker tongs Used to grab hot or Used to grab hot or

untouchable glasswareuntouchable glassware

Volumetric FlaskVolumetric Flask

Come in all sizesCome in all sizes Narrow neckNarrow neck Single mark or calibrationSingle mark or calibration TC = “To contain”TC = “To contain” Used to contain or measure a very Used to contain or measure a very

precise and accurate amount of a precise and accurate amount of a liquid liquid

Very expensiveVery expensive

Wash BottlesWash Bottles

Plastic bottle with spoutPlastic bottle with spout Different shapes or stylesDifferent shapes or styles Contain only Contain only distilled distilled

water water unless indicatedunless indicated Used to dispense distilled Used to dispense distilled

water water To add small amounts to a To add small amounts to a

containercontainer To rinse specific glasswareTo rinse specific glassware

Watch GlassWatch Glass

A circular, slightly A circular, slightly concave piece of glass concave piece of glass

Used as a surface to Used as a surface to evaporate a liquidevaporate a liquid

Used as a cover for a Used as a cover for a beakerbeaker To prevent dust or other To prevent dust or other

particles from entering particles from entering the beaker the beaker

Weighing BoatsWeighing Boats

Disposable plastic Disposable plastic dishesdishes

Used to hold Used to hold substancessubstances

Placed on balances Placed on balances when weighingwhen weighing

Wire Gauze/Pipe Stem TriangleWire Gauze/Pipe Stem Triangle

Used with an iron ring and a ring stand Used to support laboratory equipment while heating

wire gauze supports beakers and flasks pipe stem triangle supports crucibles

Spot PlateSpot Plate

Made of ceramic or plastic

Used to perform reactions on very small amounts of materials