Analytical Apparatus Flashcards
The balance’s aim is to determine the mass of an object with a mass less than 610
grams. The base of the balance holds all the parts in place.
Triple-beam Balance
[Triple beam balance parts] Is a part of the triple beam balance that has three parts. One measure up to 100g, another measure up to 500, and lastly another that measure 10g
The beams
[Triple beam balance parts] Slides across the beams to the right and increase the mass being placed on the right side of the balance
The riders
[Triple beam balance parts] Are indentations in the beams where the riders can rest which results to more accurate measurements
Notches (Nothced beams)
[Triple beam balance parts] marks the equal point of the object’s mass on the scale and
mass on the beam.
Pointer
[Triple beam balance parts] or the plate. is where the object intended to be measured will be place. If
the object is not placed in the center of the pan, the mass measured will not be precise.
Weighing pan
[Triple beam balance parts] This is used to manually adjust the triple beam balance
to the zero mark.
Adjustment knob
is used for work where the mass of a sample must be determined
more precisely. But these balances are not designed for heavy weighing.
Analytical Balance
[Basic structures of analytical balance] holds the sample needed for mass measurement.
Balance Pan
[Basic structures of analytical balance] is used to activate or deactivate balance
Power Button
[Basic structures of analytical balance] is used to bring the system back to zero. FYI to tare means to deduct
the gross weight of the container so that only the weight of the sample would be
measured.
Tare button
[Basic structures of analytical balance] used to configure the conversion system
mode button
[Basic structures of analytical balance] used to protect it from outside forces that may
compromise precision such as air.
Draft Shield
[Basic structures of analytical balance] place the balance to the reference position.
Level adjustment feet
[Basic structures of analytical balance] displays the information of the sample being weighed such as
results, errors, progress, and settings
Display Panel
typically has a maximum capacity of 160–200 g and a
precision of 0.1 mg.
Macrobalances
has a capacity of up to 10 to 30 g and a precision of 0.01 mg
Semimicro Analytical Balances
has a capacity of 1 to 3 g and a precision of 0.001 mg
Microanalytical balances
designed with features that make them ideal for
advance weighing in laboratory use, universities, medical research and in vets. They
offer high performance, advanced features and simple operation.
Nimbus analytical balances
bring remarkable precision to labs that
perform highly detailed testing. They are ideal for research and quality assurance
facilities; science education; precision counting; and production and manufacturing
applications needing exceptionally precise results.
Equinox semi micro analytical balances
are designed to meet the highest standards for accuracy
and precision in laboratory weighing applications. such applications include percentage
weighing, parts counting and density determinations that can be used in experiments
for chemical weighing, liquids and other hazardous chemicals
Eclipse analytical balances
Factors that affect the performance of Analytical Balance
Temperature
Vibration
Chemical Reaction
Air Currents
Magnet
Fingerprints
It is an airtight container which maintains an atmosphere of low humidity through the
use of a suitable drying agent which occupies the bottom part of the device. heated
objects and for the storage of dry objects that must not be exposed to the moisture
normally present in the atmosphere.
Desiccator
[Types of Desiccators] This desiccator type requires manual operation and monitoring.
It is flexible as any type of desiccant can be employed (silica gel beads, activated
charcoal, clay molecular sieves, etc) based on economics and convenience.
Standard Desiccator
[Types of Desiccators] A slow steady flow of inert gas (dry nitrogen) is supplied to
achieve a low humidity level much faster than desiccants.
Gas Purge Desiccator
[Types of Desiccators] This desiccator requires minimal manual monitoring than the
standard desiccator because of its ability to regenerate the desiccants. The electric fans
and heaters present it continuously regenerate the desiccant by preventing saturation
and automatically maintaining a low-humidity environment. It uses silica gel beads as
desiccants. These desiccants last for thousands of regeneration cycles. It operates on a
set schedule of desiccation followed by a regeneration period.
Automated Desiccator
[Types of Desiccators] removes air and moisture through the use
of a vacuum pump. The use of a vacuum pump reduces humidity which helps to
evacuate air from the chamber and also reduces oxygen level.
Vacuum Desiccator
- These are laboratory equipment with a wide base and narrow, tubular neck. These flasks
come in a range of sizes, materials & are used for varied purposes. - It is used to contain liquids and for mixing, heating, cooling, incubation, filtration,
storage, and other liquid-handling processes. Their slanted sides and narrow necks
allow the contents to be mixed by swirling without the risk of spills, which is useful for
titrations and for boiling liquids.
Erlenmeyer Flask
is a high
magnification (high power)
microscope with a compound lens
system. A compound microscope
includes several lenses: the
objective lens (usually 4x, 10x, 40x,
or 100x) is compounded
(multiplied) by the eyepiece lens
(often 10x) to provide
magnifications of 40x, 100x, 400x,
or 1000x.
Compound
Microscope
is an optical tool
that allows you to see objects that
are too tiny to see with the naked
eye. It gets its name from the use of
white or visible light to illuminate
the item of interest, allowing it to be
enlarged and examined via one or
more lenses.
Light Microscope
Types of Light Microscope
Bright Field Microscope
Phase-Contrast microscope Ultraviolet Microscope Fluorescence microscope
A large cylindrical shaped glass jar
with thick wall and is used for
covering and storing volatile
chemicals
Bell jar
A jar equipped with a sidearm for
transferring filtrate into other
vessels.
Filtering jar
is a pressure vessel
for storage and containment of gases
at above atmospheric pressure.
Cylinder gas
has a round body,
a long neck, and often a flat bottom.
It is designed for uniform heating,
boiling, distillation and ease of
swirling; it is produced in a number
of different glass thicknesses to
stand different types of use. They
are often made of borosilicate glass
for heat and chemical resistance.
Florence flask
are types of
laboratory flasks forming part of
larger distillation assemblies used
for the separation and/or
purification of liquids or liquid
mixtures where the components
have different boiling points. They
are round-bottomed for uniform
heat distribution, with a stoppered or
jointed neck of variable length, to
which is attached a downward-
sloping, inclined side-arm for
connection to a condensing unit or
similar component to cool the
heated vapors back down to their
liquid state.
Distilling flask
also known as phial or
flacon. These have a tubular or
bottle-like shape with a neck. The
volume of liquid by the neck is
known as headspace. These are
generally used in labs for
chromatography which is a
technique for separation of a
compound mixture.
Vials
A special bottle used to measure the
gravity of a material
Specific gravity
bottles
Used for washing the inner side of
an apparatus like tube or flask where
the chemicals that undergo reaction
are placed
Wash bottle
It is a glass or metal bulb consisting
of a spherical vessel with a long
downward-pointing neck through
which the distillate may pass to enter
a receiving vessel.
Retort
It is a glass apparatus through which
the liquid flow rate is controlled by
a stopcock or for pouring liquids at
controlled amounts.
Columns
These are vessels that are filled with
a substance that needs to be
analyzed and developed to fit into a
centrifuge.
Drying tube
These are tube-like pieces of an
apparatus to house a disposable
solid desiccant, with one end
terminating in a ground glass joint
for use in connecting the drying tube
to a reaction vessel. In bent models,
the bend is oriented so that the solid
desiccant does not fall into the
reaction vessel.
Extraction tube
