Lab Tools/Equipment Flashcards
(49 cards)
are used
to mix chemicals,
dissolve solids into
solutions,
heat or cool
solutions and
measure liquid
volume in mL.
They have very
poor accuracy and
should only be
used to estimate
volumes.
Beakers
are used to more
accurately measure
volumes of liquids in
milliliters (mL).
Measurement readings
should be taken at eye
level from the bottom
of the meniscus, the
concave curved
surface formed at the
top of the liquid.
Graduated Cylinders
Like beakers, they can be used to mix,
dissolve solids into
solutions, and heat or cool
solutions. Unlike beakers,
they were
developed for swirling
solutions with minimum loss
and they can be plugged
with stoppers and used to
catch vapor or condensed
liquid. Their graduations
are not very accurate.
Erlenmeyer
flasks
is
used to accurately
prepare solutions. A
weighed amount of solid
chemical is placed at
the bottom, and the
liquid solvent is added
until the fill line is
reached.
Volumetric Flask
are used to
measure or transfer
liquids
Pipet
is a
precise method used
to transfer small
volumes of liquids in
chemical, biological
and medical
laboratories. Pressin
g on a plunger
button at the top of
the micropipet will
pull the liquid in,
and a second press
will dispense it. The
tips are disposable.
Mircropipet
with
a hollow rubber
bulb at one end
and a small
opening at the
other, for
drawing in a
liquid and
expelling it in
drops.
Dropper
- device with a
stopcock at the bottom used
to measure volumes of
reagents. - are often used to
determine the concentration
of a solution by dispensing a
solution with a known
concentration in a process
known as titration.
Buret
is a
metal stand consisti
ng of a long upright
rod attached to a
heavy rectangular
base that is used
with rings and
clamps for
supporting
laboratory
apparatus.
Ring Stand
is attached
to a ring
stand to
hold up to
two burets.
Double Buret Clamp
is mounted
to a ring stand
and is used in
chemistry labs to
stabilize flasks,
beakers and
other glassware
and support them
over the work
area.
Support Ring
is attached to a
ring stand and is
used to hold test
tubes and other
cylindrical pieces
of equipment such
as burets, gas
collection tubes,
data-collection
probes, etc.
Test stube Clamp
for holding test
tubes upright
when they contain
chemicals, and
also hold test
tubes upside down
to dry.
They can be made
of wood, metal, or
plastic.
Test Tube Rack
are narrow
glass cylinders, closed at
one end, that are used
for mixing, heating, and
storing small quantities
of chemicals.
They are usually made
of a type of glass (such
as Pyrex®) that can
withstand high
temperatures.
They come in many
different sizes.
Test Tube
is used
for cleaning
test tubes and
narrow mouth
laboratory
glassware,
such as
beakers and
flasks.
Test Tube Brush
are used
to pour liquids
into narrowmouth
containers
such as fla
Funnel
are special
two-piece funnels
for filtering
mixtures through
filter paper into a
filtering flask.
Buchner
is a device
used since ancient
times to prepare
ingredients or
substances by
crushing and grinding
them into a fine
paste or powder.
Mortar and Pestle
is used
to heat solid
chemicals over a
burner at high
temperatures.
They are made
from heatresistant
ceramics
to prevent
breakage.
A cover is used to
contain any smoke
particles.
Crucible and Cover
is
used to hold
a crucible
while it is
being
heated.
Clay Triangle
can be used to
cover beakers,
evaporate
water from
solutions,
weigh out solid
chemicals, or
observe
samples under
a stereo
microscop
Watch Glass
is used to
separate water and
solids from a
solution by allowing
the water to
evaporate off into
the air. This is
usually done by
heating the
evaporating dish
over a burner or
hot plate.
Evaporating dish
Connected to
a gas line
and lit to
provide heat
for
performing
experiments
Bunsen Burner
are
generally used
to heat
glassware or its
contents.
Hot Plate
