Laboratory Equipment

And Safety

Beakers

Measures the volume of liquids Not as precise as using a graduated

cylinder Many different sizes Good for holding and

mixing substances

Erlenmeyer flask

Measures the volume of liquids Not as precise as a graduated

cylinder Has narrow top so you can use a

rubber stopper in it, to avoid splashing or breathing in fumes

Graduated cylinder

Measures liquids very accurately Read the bottom of the meniscus

when reading the volume of a liquid

Dissecting equipment

Dissecting tray (pan to dissect in)

Pins (hold down the specimen)

Dissecting probe(used to separate tissues)

Scalpel (used for cutting tissues)

Dissecting scissors (used for cutting)

Forceps (NOT tweezers)(used for grasping or tearing tissues)

Microscope equipment

Microscope

Microscope slides Coverslips Depression slide (has a depression in

which you can put liquids)

Innoculating loop

Used to transfer a tiny bit of liquid from one test tube to another

Used primarily for transferring bacteria

The loop is made of wire which can be sterilized in a bunsen burner (it turns red hot)

Test tube equipment

Rack (holds test tubes)

Test tubes (hold substances for heating in burners, or for mixing)

Rubber stoppers (made of black rubber) and corks (made of wood)

Test tube holders (hold hot test tubes safely)

Test tube brush (cleans test tubes)

Tongs

May or may not have rubber ends for holding hot beakers

Used to pick up substances that may be hot or have chemicals on them

beaker tongs

Petri dish

Used to hold liquids, grow bacteria, or hold solid substances

dropper

Used to transfer liquids one drop at a time (glass with rubber tip)

Disposable pipette (all plastic)

Safety goggles (or glasses)

Protect the eyes from chemical splashes, burning liquids, or other dangers in the laboratory

Hand lens

Magnifies objects to be seen more easily

Funnel

Helps you pour liquids from one container to another

Watch glass

Covers beakers to prevent evaporation or contamination

Can also be used to hold substances

Burner equipment Burner or “Bunsen burner” has a flame for heating

substances Striker has flint in it, for starting the flame Orange rubber tubing carries gas from the gas jets to the

burner

Ring stand setup

Ring stand Wire gauze Metal ring Burner

Thermometer

Measures temperature Red inside is an alcohol thermometer Metallic (silver) inside is mercury

Stirring rod

Stirs substances Never, ever, everuse a thermometerto stir!

Hot plate

For heating substances

Mortar and pestle

Used to grind up solids into powder

Ruler

Used to measure length