Analytical Apparatus

Question 1

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.

Answer 1

Triple-beam Balance

Question 2

[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

Answer 2

The beams

Question 3

[Triple beam balance parts] Slides across the beams to the right and increase the mass being placed on the right side of the balance

Answer 3

The riders

Question 4

[Triple beam balance parts] Are indentations in the beams where the riders can rest which results to more accurate measurements

Answer 4

Notches (Nothced beams)

Question 5

[Triple beam balance parts] marks the equal point of the object’s mass on the scale and
mass on the beam.

Answer 5

Pointer

Question 6

[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.

Answer 6

Weighing pan

Question 7

[Triple beam balance parts] This is used to manually adjust the triple beam balance
to the zero mark.

Answer 7

Adjustment knob

Question 8

is used for work where the mass of a sample must be determined
more precisely. But these balances are not designed for heavy weighing.

Answer 8

Analytical Balance

Question 9

[Basic structures of analytical balance] holds the sample needed for mass measurement.

Answer 9

Balance Pan

Question 10

[Basic structures of analytical balance] is used to activate or deactivate balance

Answer 10

Power Button

Question 11

[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.

Answer 11

Tare button

Question 12

[Basic structures of analytical balance] used to configure the conversion system

Answer 12

mode button

Question 13

[Basic structures of analytical balance] used to protect it from outside forces that may
compromise precision such as air.

Answer 13

Draft Shield

Question 14

[Basic structures of analytical balance] place the balance to the reference position.

Answer 14

Level adjustment feet

Question 15

[Basic structures of analytical balance] displays the information of the sample being weighed such as
results, errors, progress, and settings

Answer 15

Display Panel

Question 16

typically has a maximum capacity of 160–200 g and a
precision of 0.1 mg.

Answer 16

Macrobalances

Question 17

has a capacity of up to 10 to 30 g and a precision of 0.01 mg

Answer 17

Semimicro Analytical Balances

Question 18

has a capacity of 1 to 3 g and a precision of 0.001 mg

Answer 18

Microanalytical balances

Question 19

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.

Answer 19

Nimbus analytical balances

Question 20

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.

Answer 20

Equinox semi micro analytical balances

Question 21

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

Answer 21

Eclipse analytical balances

Question 22

Factors that affect the performance of Analytical Balance

Answer 22

Temperature
Vibration
Chemical Reaction
Air Currents
Magnet
Fingerprints

Question 23

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.

Answer 23

Desiccator

Question 24

[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.

Answer 24

Standard Desiccator

Question 25

[Types of Desiccators] A slow steady flow of inert gas (dry nitrogen) is supplied to
achieve a low humidity level much faster than desiccants.

Answer 25

Gas Purge Desiccator

Question 26

[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.

Answer 26

Automated Desiccator

Question 27

[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.

Answer 27

Vacuum Desiccator

Question 28

• 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.

Answer 28

Erlenmeyer Flask

Question 29

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.

Answer 29

Compound
Microscope

Question 30

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.

Answer 30

Light Microscope

Question 31

Types of Light Microscope

Answer 31

Bright Field Microscope
Phase-Contrast microscope Ultraviolet Microscope Fluorescence microscope

Question 32

A large cylindrical shaped glass jar
with thick wall and is used for
covering and storing volatile
chemicals

Answer 32

Bell jar

Question 33

A jar equipped with a sidearm for
transferring filtrate into other
vessels.

Answer 33

Filtering jar

Question 34

is a pressure vessel
for storage and containment of gases
at above atmospheric pressure.

Answer 34

Cylinder gas

Question 35

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.

Answer 35

Florence flask

Question 36

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.

Answer 36

Distilling flask

Question 37

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.

Answer 37

Vials

Question 38

A special bottle used to measure the
gravity of a material

Answer 38

Specific gravity
bottles

Question 39

Used for washing the inner side of
an apparatus like tube or flask where
the chemicals that undergo reaction
are placed

Answer 39

Wash bottle

Question 40

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.

Answer 40

Retort

Question 41

It is a glass apparatus through which
the liquid flow rate is controlled by
a stopcock or for pouring liquids at
controlled amounts.

Answer 41

Columns

Question 42

These are vessels that are filled with
a substance that needs to be
analyzed and developed to fit into a
centrifuge.

Answer 42

Drying tube

Question 43

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.

Answer 43

Extraction tube