常用化学仪器及使用方法的英文翻译
网络与生活-大学学生会竞选稿
常用化学仪器及使用方法的英文翻译
Common
chemical instruments and methods of use
(a) 1 capable of directly heating the instrument
Instrument graphics and name
[化]
main application
Using methods and
precautions
Used in evaporating solvent or
concentrated solution
Can be directly
heated, but not cold. Not too full evaporation
solution,
level should be 1 cm away from the
edge.
Commonly used as a reactor, but also
a small amount of gas
Direct heating, take
a test tube, with the middle finger, index finger,
thumb grasp tube mouth accounted for length of
1 3, heating pipe can not be
against the
people. In a test tube of liquid does not exceed
Volume 1 2,
heating is not more than 1 3 of
the heating to test tube clamp, and the test
tube with the desktop into a 45 degree angle,
first to all the liquid heating,
then in the
bottom of a liquid heating and continue to shake.
To solid heating
tube to thwart mouth slightly
downward tilt.
For burning solid, the
reaction (decomposition)
Can be directly
heated to a high temperature. When burning should
be
placed in the mud river, Schnabel.
Application crucible should avoid cold
gathering.
Burning a small amount of
solid matter
Can be directly used for
heating, met with Cu, Fe reaction material to
spread fine sand or stone Mianrong. On the key
pad
2 can be indirect heating (need to pad
asbestos network)
Instrument graphics and
name
[化] main application
Using
methods and precautions
([**************]ml, etc.)
Used to
prepare, concentrated, diluted solution. It also
can be used as
reactor and tube water bath
heating.
When heating should be pad
asbestos net
According to the volume of
liquid with different specifications.
Used
as a reactor (especially not heated).
Can
not directly heating, heating, to the pad of
asbestos mesh. Not
suitable for long time
heating, when the liquid in the bottle is too
small,
the heating is easy to make.
A
reactor for use under heating conditions
Can not be directly heated, should be pad asbestos
network heating. The
amount of the liquid
should not exceed the capacity of 1 2
For
distillation and fractionation, also can be used
as a gas generator
When heated to cushion
asbestos net. Also available in other hot bath.
As the receiver
As a reactor,
commonly used in titration operation
In
general the asbestos net heating. In the titration
operation in the
liquid is not easy to spill.
3 unable to heat the instrument
Instrument graphics and name
[化] main
application
Use method and matters needing
attention
Used to collect and store a
small amount of gas
Upper surface
grinding, the inside is frosted, piece of glass to
vaseline
oil, to avoid leakage, if in the
combustion reaction and formation of solid,
add a small amount of water or fine sand in
the bottom.
Packaging various reagents,
need to be protected from light brown bottle.
The jar containing solid, narrow necked
bottles containing liquid.
Medial
frosted bottle, and are in one-to-one
correspondence with the
bottle stopper, must
not cover wrong. Glass Saibuke containing alkali,
dropping bottle not can be long home strong
oxidant etc..
Reactor solid + liquid for
producing certain gases
The solid is a
massive, gas is dissolved in a small reaction with
no
strong heat release, the rotating gas guide
pipe piston control reaction or
stop.
(two) measuring instrument
Instrument
graphics and name
[化] main application
Use method and matters needing attention
The volume of a liquid.
According
to the volume of the volume to be taken, choose
the size of the
right size, to reduce the
error. It can not be used as a reactor, can not be
used directly in the preparation of the
solution.
([**************]ml)
A
solution for accurate preparation of a certain
amount of a substance.
Not as the reactor,
can not be heated, the plug is interchangeable,
should
not be stored solution, to be used in
the marked temperature
V olume used to
generate gas.
Note: the amount of gas is
insoluble, the intake pipe can not be reversed,
should be short.
The weighing of the
accuracy required is not high.
Drugs are
not directly placed in the tray, the right code.
If the right
thing, it is said that the
quality is less than the actual quality of the
material. For example, the actual quality of
the 9.6g is 9 - 0.6=8.4g. is
generally
accurate to 0.1g.
For neutralization
titration (also can be used for other titration)
experiments, also can be accurately measured
volume of liquid volume
Acid buret
can not contain alkaline solution, strong
oxidizing agents
(KMnO4 solution, I2 water)
should be placed in acid burette,
the top,
accurate to 0.01ml.
A dropper
For
sucking or dropping a liquid, a constant number is
added to the night.
Must be dedicated, not
a multi use, not dropping when in contact with
other vessels.
Used to measure
temperature
When heated, it can not exceed
its maximum range, not when the agitator is
used, pay attention to the measurement of
temperature, the position of the
mercury ball.
(three) used as filtration, separation,
and injection of liquid capacity
Instrument graphics and name
[化] main
application
Use method and matters needing
attention
Used as a filter or injection
into a small container.
Should be
Used in the assembly of the reactor, which is easy
to be injected into the
reaction liquid.
Should be inserted at the end of the tube to
prevent gas escape
The separation density
is different and the mutual non miscible liquid;
at
any time, the device of the reactor at any
time
The liquid, the lower liquid
discharged from the outlet, the upper liquid
is poured from the alkaline liquid should not
be sung;
(four) drying apparatus
Instrument graphics and name
[化] main
application
Use method and matters needing
attention
Inside a solid desiccant
or absorbent for drying or absorbing certain
gases.
Should pay attention to prevent
desiccant liquefaction and failure.
Remove
impurities in the gas
Attention to the
flow direction should be long tube inlet, outlet
pipe
Used to store dry material or dry
Very hot material should be put in a
little cold.
(five) other instruments
Instrument graphics and name
[化] main
application
Use method and matters needing
attention
For distillation, condensation
of liquefied gas
When assembling the tube
head and tail, low, steam and cooling water
reverse flow
Used as heat source, the
flame temperature is 500 to 600.
Loaded
amount of alcohol can not exceed the volume of 2
3, but not less
than 1 4. Heating to flame.
Goes out to put a cover over the death, cannot
quench
Used as heat source, the flame
temperature can reach 1000 degrees
centigrade.
The heating needs strong thermal
experiments. Such as coal carbonization,
carbon reduction of
copper oxide
The lid can be used as evaporation pan or beaker,
can be observed inside
the case
Can
not heat
(six) clip holder
Iron, iron clamp, test tube clamp, burette clamp,
crucible clamp, triangle,
triangle mud,
tweezers, asbestos net.
(seven)
instruments and supplies connected
Single
hole, double hole plug, no hole plug, glass tube,
rubber tube.
There are some other
instruments, glass rod, tube brush, mortar,
receiver