Lab equipment

Objectives• Describe• Draw• List the uses of each item of lab equipment

BeakerThis is a 250ml beaker.

Beakers can be found in different sizes: 100ml, 250ml, 400ml marked on the beaker.

Used as a container

Can be heated

Graduated CylinderThis is a graduated (marked) cylinder.

Graduated cylinders can be found in different sizes: 10, 25, 35, 50, 100ml

Used for measuring volume Graduated in ml

Spatula

Used for transferring solids

Metal or porcelain

Erlenmeyer FlaskThis is an Erlenmeyer flask.

Erlenmeyer flasks can be found in

different sizes: 125, 250, 500ml.

Used as a container; can be heated

Used for preparing mixtures

Used for doing chemical reactions

Has an opening and a flat bottom so that chemicals do not splash or swirl.

FunnelThis is a funnel.

Small and big funnel

It has a stem.

Used for holding a filter paper to separate a mixture or solid and liquid

Used in pouring

Could be glass or plastic

Volumetric FlaskCalibrated in liter: marked with 1 volume.

Used for preparing solutions

Used for measuring ONLY one volume

Has a stopper

Round Bottom FlaskSeveral sizes

Used for heating

Used for simple distillation

Flat Bottom FlaskSeveral sizes

Used for heating

Used for simple distillation

Separatory FunnelSeveral sizes

Has a stopper, a stop cock, and a stem

Used for separating liquid mixtures

Graduated PipetSeveral sizes graduated in ml

To measure and deliver specific volumes of liquid

Very accurate in measuring volumes; more accurate than graduated cylinder

Use a pipet filler to push the liquid through the pipet

Volumetric Pipette

Several sizes marked to a certain volume

measures and deliver specific volumes of liquid

Calibrated in ml (measures ONLY one volume)

Use a pipet filler to push the liquid through the pipet

Very accurate in measuring volumes; more accurate than graduated cylinder

ProPipette or Pipette Pumps

To push the liquid through the pipette

Bunsen BurnerIs a metal heating device connected to a gas outlet with a rubber tubing

To heat chemicals

To light a Bunsen burner: 1) close the gas and air valve 2) hold a light match on top of the burner tube 3) turn on the gas valve 4) open the air valve slowly 4) adjust the light to produce a light blue flame

Test TubeSeveral sizes

To do chemical test on small sample

Can be heated

Test Tube HolderMetal clamp

To hold test tubes

Hold it near the opening

Test Tube RackMay be wood, metal, or plastic

Hold test tubes in an upright position

Ring StandMetal rod with a heavy base

Has many uses: support and or hold

Has a lot of accessories

Iron Ring

Attach to the ring

stand as a support for

apparatus

Hold funnel, wire

gauze, beakers…

ClampHold apparatus

Can be attached to the ring stand

Wire GauzeWire screen with a ceramic fibered center (doesn’t burn)

To spread the heat of a flame

Mortal and Pestle

grinds chemicals to powder

Pestle

Porcelain dish with a grinder

Bottle

washes apparatus with distilled water

Squeezable plastic bottle with angular tip

Stirring RodStir combination of liquids

Dropper

transfers small amount of liquid

Glass and plastic droppers

Plastic used only once

Every liquid has its own dropper

TripodTri: 3, pod: leg. Like a small table

holds beakers or flasks being heated on a bunsen burner

Can’t be used for a round bottom flask

Evaporating DishPorcelain dish

Acts as a container for small amounts of liquids being evaporated

Metallic Tongs

picks up and holds hot apparatus

Eye Goggles

Used as eye glasses to protect the eyes