Lab Equipments
description
Transcript of Lab Equipments
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Lab Equipments
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BeakerBeakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated.
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Erlenmeyer Flask
Erlenmeyer flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.
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Florence Flask
used for the mixing of chemicals. Narrow neck prevents splash exposure.
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Graduated Cylinder
A graduated cylinder is used to measure volumes of liquids.
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Gas Collecting Bottle
We use gas collecting bottles when large volumes of gases are produced, and must be collected by the displacement of water.
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Test Tubes13 x 100 mm test tubes
10 x 75 mm test tubes
Ignitiontube
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Test Tube Holder
A test tube holder is useful for holding a test tube
which is too hot to
handle.
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Test Tube BrushesTest tube brushes are used to clean test tubes and graduated cylinders.Forcing a large brush into a small test tube will often break the tube.
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Test Tube Racks
Test tube racks are for holding and organizing test tubes on the laboratory counter. Plastic racks may melt in contact with very hot test tubes.
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Rubber Stoppers
Rubber stoppers are used to close
containers to avoid spillage or
contamination.
Containers should never be
heated when there is a stopper
in place.
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Watch Glass
A watch glass is
used to hold a small
amount of solid, such
as the product of a
reaction.
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Glass Stir RodA glass rod is
used to manually stir
solutions.
It can also be used to
transfer a single drop of
a solution.
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Medicine Dropper
A medicine dropper is used to transfer a small volume of liquid (less than one mL).
On top of each medicine dropper is a “rubber bulb”
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FunnelA funnel
is used to aid in the transfer of liquid from one vessel to another.
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Mohr PipetteA Mohr pipette
measures and
delivers exact
volumes of liquids.
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SpatulasSpatulas are used to dispense solid chemicals from
their containers.
Chemicals should never
be transferred with your
bare hands.
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Beaker TongsBeaker
tongs are used to move
beakers containing hot liquids
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Bunsen BurnerBunsen
burners are used for the heating of nonvolatile liquids and
solids.
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Evaporating Dish
The evaporating dish is used
for the heating of
stable solid compounds
and elements.
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Crucible TongsFor handling hot crucibles; also used to pick up other hot objects.
NOT to be used for
picking up beakers!
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Crucible with coverCrucibles are
used for heating certain
solids, particularly
metals, to very high
temperatures.
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Glass PlatesGlass plates
provide a surface for semi-micro
scale experiments, such as drop reactions and
testing of acids and bases.
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Iron stand and their Components
Is a solid rod mounted on a base used as support in holding glass
flasks
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Clay Triangle
The clay triangle is used as a
support for porcelain crucibles
when being heated over a
Bunsen burner.
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Iron RingsIron rings
connect to a ringstand and
provide a stable,
elevated platform for the reaction.
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Utility ClampsUtility clamps are used to secure test
tubes, distillation
columns, and burets to the
ringstand.
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Wire GauzeWire gauze sits on the iron ring to provide a place to stand a beaker.
On older wire gauze, the white material is asbestos!
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Thermometer
Used in measuring temperatu
re
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Alcohol Lamp
Used in
heating
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Mortar and Pestle
Used in grinding
or refining
solid chemical
s
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Spring Balance
Used in measuri
ng weight
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Triple Beam Balance
Measures the mass of an object
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Iron stand and their Components
Is a solid rod mounted on a base used as support in holding glass
flasks
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Iron RingsIron rings
connect to a ringstand and
provide a stable,
elevated platform for the reaction.
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Utility ClampsUtility clamps are used to secure test
tubes, distillation
columns, and burettes to
the ring stand.
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Reagent bottle
-serve as container
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pH meter/pH paperused to
measure the pH values of different
substances
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Petri dishis used in the preparation of bacteriologica
l cultures.
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Tripodis a three-legged support or stand for a wire gauze and a container with liquid to be
heated
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Blue and red litmus paper
an indicator which is used to
determine if a substance is an
acid or base.
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Tuning forkused to
observe the vibration of a moving object
to make sounds
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Vernier caliperused to
measure the internal and
external diameters of
tubes or pipes
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Micrometers Used to measure the thickness of a sheet of paper and the diameter of thin wires
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Thistle tube Used to transfer or pour liquids from one container to the bottom of another vessel
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MagnetA piece of iron,
steel or stone that attracts metal
objects.
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CorkIs a light, spongy material which is ideal for bottle
stoppers.
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Magnifying glass
Used to make small things look bigger
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Measuring glassUsed to measure amount of liquid
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Cork borerUsed to make holes