Transcript Lab Equipment notes powerpoint

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
 Pins
 Dissecting probe
(pan to dissect in)
(hold down the specimen)
(used to separate tissues)
 Scalpel
 Dissecting scissors
 Forceps
(used for cutting tissues)
(used for cutting)
(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
 Test tube holders
 Test tube brush
corks
(hold hot test tubes safely)
(cleans test tubes)
(made of wood)
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
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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, ever
use a thermometer
to stir!
Hot plate
 For heating substances
Mortar and pestle
 Used to grind up solids into powder
Ruler
 Used to measure length