Transcript Florence Flask

Science Lab
Equipment
Identification
Florence Flask
A Florence flask (also known as a
round bottom flask or a boiling flask)
is a piece of laboratory glassware. It
is a round or flat-bottom flask with a
long neck. It is designed for uniform
heating and is produced in a number
of different glass thicknesses to stand
different types of use. They are often
made of borosilicate glass that has
alkali to prevent cracks or defacing of
the glass. The flask is named after
Florence, Italy.
Erlenmeyer Flask
• An Erlenmeyer flask (also known as a conical
flask) is a type of laboratory glassware which
consists of an inverted conical base with a
cylindrical neck. The main advantages in an
Erlenmeyer flask are that it is less likely to tip
over than a Florence flask and the smaller neck
slows evaporative loss better than a beaker. It
can also be swirled without fear of the contents
spilling. It is named after the German chemist
Richard Erlenmeyer. The conical flask's
counterpart is the beaker. However the main
difference is that conical flasks may be
stoppered using rubber bungs, so as the
contents of the flask may be mixed or
transported safely. The flask is not usually used
when heating substances vigorously, this task
usually being left to the Florence flask.
Stopper
• A stopper is a truncated conical
piece of rubber or cork used to close
off a glass tube, piece of laboratory
glassware, a wine bottle or barrel and
other containers with orifices. A
rubber stopper is sometimes called
a rubber bung, and a cork stopper is
called cork. Ground glass stoppers
are commonly used with laboratory
glassware, mainly because of their
nonreactivity.
Beaker
• A beaker is a type of laboratory
glassware which consists of a
cylindrical cup with a notch on the
top to allow for the pouring of
liquids. A beaker can be placed
over a burning flame (such as a
Bunsen burner) to be heated.
Test Tube
• A test tube (Sometimes culture tube) is a kind
of laboratory glassware, composed of a
fingerlike length of glass tubing, open at the top,
sometimes with a rounded lip at the top, and a
rounded 'U' shaped bottom.
• They are designed to allow easy heating of
samples, to be held in a flame, and often are
made of expansion-resistant glasses, such as
Pyrex. Tests tubes are often preferred above
beakers when multiple small chemical or
biological samples have to be handled and/or
stored.
Test Tube Rack
Used to store and hold test tubes in an upright
position.
Test Tube Holder
Used to hold test tubes, especially when heated or
containing harmful chemicals.
Test Tube Brush
Used to clean the insides of test tubes.
Graduated Cylinder
• A graduated (Grad for short)
cylinder, also referred to as a
measuring cylinder, is a type of
laboratory glassware that is used
for measuring the volumes of
liquids in a quantitative manner.
Pipette
measures very
small amounts of
liquid presisely
Petri Dish
• A Petri dish is a shallow glass or
plastic cylindrical dish that
biologists use to culture microbes.
• Usually, the dish is partially filled
with warm liquid agar along with a
particular mix of nutrients, salts and
amino acids and, optionally,
antibiotics, that match the
metabolic needs of the microbe
being studied
• Petri dishes may be used to
observe plant germination, or small
animal behavior.
Mortar and Pestle
• A mortar and pestle are two tools used with
each other to grind and mix substances. The
mortar is a bowl-like vessel used to contain a
substance. Mortars have smooth, rounded
bottoms and wide mouths. The pestle is a stick
used for pounding and grinding. Mortar and
pestles were traditionally used in pharmacies to
crush various ingredients prior to preparing an
extemporaneous prescription. The mortar and
pestle is the most common icon associated with
pharmacies. For pharmaceutical use, the mortar
and the head of the pestle are usually made of
porcelain, while the handle of the pestle is made
of wood.
Funnel
• A funnel is a conically shaped
pipe, employed as a device to
channel liquid or fine-grained
substances into containers with a
small opening.
Eye Dropper/Medicine Dropper
Used to mix or dispense small amounts of liquid, a
drop at a time. Not used for measuring.
Microscope
A microscope (Greek: micron =
small and scopos = aim) is an
instrument for viewing objects
that are too small to be seen by
the naked or unaided eye.
Microscope Slide & Cover Slip
• A microscope slide is a thin sheet of
glass used to hold objects for
examination under a microscope. A
smaller sheet of glass, called a cover
slip or cover glass, is sometimes
placed over a specimen on the
microscope slide. The cover glass
serves two purposes: (1) it protects
the microscope's objective lens from
contacting the specimen, and (2) it
creates an even thickness (in wet
mounts) for viewing.
Hand Lens/Magnifying Glass
• A magnifying glass is a single convex lens
which is used to produce a magnified image
of an object. The lens is usually mounted in
a frame with a handle. The magnifying
glass is the simplest form of optical
microscope.
Triple Beam Balance
• A balance (also balance scale, beam balance or
laboratory balance) is used to accurately measure the
mass of an object. This class of measuring instrument
uses a comparison technique in its conventional form of
a beam from which a weighing pan (weighing bason)
and scale pan (scale bason) are suspended. To weigh
an object, it is placed on the measuring pan, and
standard weights are added to the scale pan until the
beam is in equilibrium.
Tongs
• Tongs are gripping and lifting tools, of which
there are many forms adapted to their specific
use.
Safety Goggles
• Goggles or safety glasses are
a form of protective eyewear that
usually enclose the eye area to
prevent particulates or chemicals
from striking the eyes. They are
used in chemistry laboratories
and in woodworking
Thermometer
• A thermometer is a device
used to measure
temperatures or
temperature changes.
Hot Plate
• A hot plate is a small electric
stove often used in a
laboratory setting to heat
glassware. Some hotplates
also contain a magnetic
stirrer, allowing the heated
liquid to be stirred
simultaneously.
Scalpel
• A scalpel is a very sharp knife used for
dissections Scalpels can have a fixed blade,
or a disposable blade. The blades on
scalpels are extremely sharp—merely
touching a the blade with bare hands to test
it will cut through the skin.
Forceps
• Forceps are a hand-held instrument for grasping
and holding objects, similar in concept to tongs,
tweezers or pincers.
Dissecting Pins
Used to hold objects in place during dissection.
Probe
• Probe is a generic term used to refer to a
device used to gather information.
Bunsen Burner
• A Bunsen burner is a device
used in scientific laboratories for
heating, sterilization, and many
other uses.
Ring, Ring Stand, & Clamp