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anal chem > Analytical Apparatus > Flashcards

Analytical Apparatus Flashcards

1
Q

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.

A

Triple-beam Balance

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2
Q

[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

A

The beams

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3
Q

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

A

The riders

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4
Q

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

A

Notches (Nothced beams)

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5
Q

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

A

Pointer

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6
Q

[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.

A

Weighing pan

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7
Q

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

A

Adjustment knob

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8
Q

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

A

Analytical Balance

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9
Q

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

A

Balance Pan

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10
Q

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

A

Power Button

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11
Q

[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.

A

Tare button

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12
Q

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

A

mode button

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13
Q

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

A

Draft Shield

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14
Q

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

A

Level adjustment feet

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15
Q

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

A

Display Panel

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16
Q

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

A

Macrobalances

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17
Q

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

A

Semimicro Analytical Balances

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18
Q

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

A

Microanalytical balances

19
Q

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.

A

Nimbus analytical balances

20
Q

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.

A

Equinox semi micro analytical balances

21
Q

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

A

Eclipse analytical balances

22
Q

Factors that affect the performance of Analytical Balance

A

Temperature
Vibration
Chemical Reaction
Air Currents
Magnet
Fingerprints

23
Q

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.

A

Desiccator

24
Q

[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.

A

Standard Desiccator

25
Q

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

A

Gas Purge Desiccator

26
Q

[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.

A

Automated Desiccator

27
Q

[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.

A

Vacuum Desiccator

28
Q
  • 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.
A

Erlenmeyer Flask

29
Q

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.

A

Compound
Microscope

30
Q

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.

A

Light Microscope

31
Q

Types of Light Microscope

A

Bright Field Microscope
Phase-Contrast microscope Ultraviolet Microscope Fluorescence microscope

32
Q

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

A

Bell jar

33
Q

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

A

Filtering jar

34
Q

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

A

Cylinder gas

35
Q

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.

A

Florence flask

36
Q

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.

A

Distilling flask

37
Q

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.

A

Vials

38
Q

A special bottle used to measure the
gravity of a material

A

Specific gravity
bottles

39
Q

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

A

Wash bottle

40
Q

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.

A

Retort

41
Q

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

A

Columns

42
Q

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

A

Drying tube

43
Q

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.

A

Extraction tube

anal chem (4 decks)

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