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COMMON LABORATORY APPARATUS

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Document Description
Beakers, Bunsen Burners, Burets, Clay Triangles, Droppers, Erlenmeyer Flasks, Glass Funnels, Graduated Cylinders, Hot Plates, Pipets, Ring stand with Rings, Test Tubes, Test tube holders, Tongs, Volumetric Flasks, Wash bottles, Watch glasses, Wire Gauze
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  • Added: September, 30th 2008
  • Reads: 207787
  • Downloads: 4976
  • File size: 157.02kb
  • Pages: 7
  • Tags: laboratory, apparatus, lab, chemistry, equipment
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  • Name: rivas
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Showing 50 from all 193 comments

by Ryan Padilla on July 12th, 2011 at 07:19 pm
gagawa na nga lang kayo! kulang pa! ano ba yan! san ba gawa yan? sa kawayan? imba!!!!!!1
by Ryan C Padilla on July 12th, 2011 at 07:19 pm
kulang ano ba 2?? amg bibigay na nga lng e kulang pa!!!!!!!!!!!!!!
by ryan13 on July 12th, 2011 at 07:22 pm
iloveyou jirah
by kim ives lavadia on July 12th, 2011 at 07:24 pm
magdadag pa kayo ng iba...,ndi ko tuloy mahanap hinahanap ko!!!
..|.>
by LordJay on July 12th, 2011 at 07:27 pm
bading ka ryan
by on July 12th, 2011 at 07:29 pm
kulang naman to!!!.ngArRRRRR!!!

parang c jong jong kulang..haha!!

by lord jay lin on July 12th, 2011 at 07:29 pm
AYIIIE!!!!RYAN AH.
by frankie guanzon on July 12th, 2011 at 07:29 pm
i love you rosana!!!love parin kita!! : )

kulang naman!!lhemmmm!!!

d ko mahanap un iba!!!
haayyy nako,,nxa number 15 pa ako!!
by Swat Tiangco on July 12th, 2011 at 07:30 pm
GAY PO AKO
by jhong on July 12th, 2011 at 07:31 pm
hoy
by vet on July 12th, 2011 at 07:32 pm
ang onti naman!kulang.
by Swat Tiangco on July 12th, 2011 at 07:32 pm
liit po ng titi ko
by EWAN KOH on July 12th, 2011 at 07:33 pm
MAS BADING KAH LORD.WAHAHAHAAHAH
by ryan on July 12th, 2011 at 07:33 pm
hoy ryan nka panti
by Swat Tiangco on July 12th, 2011 at 07:34 pm
liit po ng titi ko
liit po ng titi ko
liit po ng titi koliit po ng titi ko
liit po ng titi ko
liit po ng titi ko
liit po ng titi ko
liit po ng titi ko
liit po ng titi ko
liit po ng titi ko
by LordJayLin on July 12th, 2011 at 07:34 pm
tarantado kyo
by gatss on July 12th, 2011 at 07:35 pm
is this all??heck!


BTW
lin lord GAY
by YVONNE on July 12th, 2011 at 07:36 pm
SUNONG ROSSANA.!!!!!!!!!!
by gatss on July 12th, 2011 at 07:37 pm
Bading po ako
by shaira canapi on July 12th, 2011 at 07:40 pm
love you jhong!!!muaaah!!!muaahh!!

d kita makkalimutan jhong!!lalo na ung hinalikan mo ako...tamis!!!!!!

-Ayyyyieeeehhh!!!!love n kita
by Swat Tiangco on July 12th, 2011 at 07:40 pm
Swat was here! :P
by jhane on July 13th, 2011 at 05:25 am
asar d namaN LHAT NAND2 hay
by JOLLIE ANN GAVIA on July 13th, 2011 at 06:44 am
IT"S BEAUTIFUL...!!!
by hayes tungcod on July 15th, 2011 at 07:11 am
wow ganda bagy xa pinag aaeraln namani ngaun
by Darkstryker on July 16th, 2011 at 09:50 pm
ano baya sobra sobra 35 ang kailangan ko eh
by dhala on July 17th, 2011 at 03:43 am
k dot












bitin
by Miggy26 on July 21st, 2011 at 05:27 am
Walang kakwenta-kwenta tanggalin na to'
by marven on July 22nd, 2011 at 03:10 am
paki dagdagan naman kasi kulang........
by anne on July 22nd, 2011 at 10:36 am
maganda sana yung mga definitions kaso ang ikli !
by zeljjane on July 23rd, 2011 at 08:25 am
the chemist is important to the people
by zeljjane on July 23rd, 2011 at 08:26 am
the chemist is important to the people
by axiel on July 29th, 2011 at 11:48 pm
what are the picture of common laboratory appratus
by cynthia cabra on August 05th, 2011 at 05:12 am
lesson namin to.
by pao pao on August 08th, 2011 at 06:23 am
none picture so you are nonsense
by Lois Steve Smart on August 09th, 2011 at 06:58 am
Barrette = measures volume of solution
Clay triangle = a wire frame with porcelain used to support a crucible
Wire gauze = used to spread heat of a burner flame
Test tube - used as holder of small amount of solution
Forceps - holds or pick up small objects
Graduated cylinder - measures approximate volume
Graduated pipette - measures solution volumes
Condenser - used in distillation
Crucible - used to heat a small amount of a solid substance at a very high temperature
Beaker - a liquid-measuring container
clay triangle - a wire frame with porcelain used to support a crucible
test tube - used as holder of small amount of solution
condenser - used in distillation
funnel - used to transfer solids and liquids without spilling
thermometer - measures temperature
balance - measures mass of material
pH meter - measures acidity of solutions
centrifuge - separates materials of varying density
pipette - used to transfer measured substances into another vessel
droppers - for addition of liquids, drop by drop
glass funnels - for funneling liquids from one container to another, or for filtering when equipped with filter paper.
Ring stand (with rings or clamps) - for holding pieces of glassware in place.
Test-tube holders - for holding test tubes when tubes should not be touched
Wash bottles - for dispensing small quantities of distilled water.
Watch glasses - for holding small samples or for covering beakers or evaporating dishes
Beam Balance - Used to find the mass of various materials.
Electronic Balance - Used to find the mass of materials. This particular balance is not as precise as the beam balance.
Bunsen burner - Shown with rubber hose connected to gas jet. Used to heat materials in lab.
Triple beam balance - is a type of balance commonly used in the laboratory to determine the mass (only the mass) of items or things.
Bottle – can be used for storage, for mixing and for displaying.
Evaporating Dish - is used to heat and evaporate liquids.
Florence Flask - is used for heating substances that need to be heated evenly. The bulbed bottom allows the heat to distribute through the liquid more evenly. The Florence Flask is mostly used in distillation experiments.
Food Coloring - is used in many experiments to show color change and to make the experiment more exciting.
Micro spatula - is used for moving small amounts of solid from place to place.
Mortar and Pestle - are used to crush solids into powders for experiments, usually to better dissolve the solids.
Paper Towels - are essential to the lab environment. They will be used in almost every lab.
Pipet - is used for moving small amounts of liquid from place to place. They are usually made of plastic and are disposable
Stir Rod - are used to stir things. They are usually made of glass. Stir Rods are very useful in the lab setting.
Test tube Brush - is used to easily clean the inside of a test tube.
Test tube Rack - is used to hold test-tube while reactions happen in them or while they are not needed.
Tongs - are used to hold many different things such as flasks, crucibles, and evaporating dishes when they are hot.
Triangle - is used to hold crucibles when they are being heated. They usually sit on a ring stand
Volumetric Flask - is used to measure one specific volume. They are mostly used in mixing solutions where a one liter or one half a liter is needed.
Watch Glass - is used to hold solids when being weighed or transported. They should never be heated.
Buret - is used in titrations to measure precisely how much liquid is used.
Dropper – are used to transfer small quantities of liquids
Reagent Bottle – used as a container where you put chemicals that can't be thrown in the sink.
Electronic Balance – it is a balance which shows the weight of a substance digitally and is used to weigh chemicals in labs
Filter Funnel – used for separating solids from liquids via the laboratory process of filtering
Flat Bottomed Flask – are vessels (containers) which fall into the category of laboratory equipment known as glassware
Plastic Wash Bottle – useful for easily marking and identifying various types if chemicals and solvents.
Alcohol lamp – serves as a source of heat for laboratory activity
Clay triangle – is used to hold a crucible while the crucible is heated.
Iron stand – It is a laboratory
equipment used to hold or support beakers during experiments.
Wing top – is an accessory that can be used with a bunsen burner to provide a
broad flat fan flame, similar to that of a fishtail.
Cork - It is used to cover flasks so that the oxygen or any mixture will not get out of the container.
Erlenmeyer flask - are used to measure, mix, and store liquids
by jomel on August 28th, 2011 at 03:26 am
am............pwede nrin
ksi nkakatulong din ito
sa mga nagaaral
ng laboratory.
by lorenzo nobles on November 12th, 2011 at 09:33 am
thanks i learned a lot from this site
by jhion on June 05th, 2012 at 08:28 pm
anu ba yean@ wala naman pla dito!text jio ako ah!09264867826
by joel on June 13th, 2012 at 04:14 am
Examples lang yan mga tol!! kung nakulangan kayu mag hanap kayu ng iba!!!
by joy taneo on June 14th, 2012 at 07:30 am
Website for this image
Figure 10-1.—Illustrations of laboratory apparatus. and are cited in the ...
constructionmanuals.tpub.com
Full-size image
641 × 680 (1.2x larger), 46KB
Search by image
Type: JPG
Images may be subject to copyright.

--> make mE sUckZ..!!!
TagSA2x Pjud Ug drawinG..:(
by kim olivo on June 20th, 2012 at 04:49 am
kulang na kulang
by rAlpH aLlenz on June 20th, 2012 at 08:28 am
grabeeee!!!!!!! ang konti nmn!!!!! >.<
by ewan on June 23rd, 2012 at 07:52 am
bkt ang konti naman
by sakura on June 25th, 2012 at 07:09 am
kulang naman eh!!!
by angelo king 101 on June 25th, 2012 at 08:09 am
thats all wow so few grabe
by DT 004 on June 28th, 2012 at 04:40 am
dito ung full copy nitong pdf na 'to.. just open this link http://www.google.com.ph/url?sa=t&rct=j&q=LABORAtory+apparatus&source=web&cd=2&ved=0CFgQFjAB&url=http%3A%2F%2Fchemlab.truman.edu%2FCHEM100Labs%2FCommon%2520apparatus%2520and%2520procedures.pdf&ei=RyXsT_PpOMXamAXT4sTNAg&usg=AFQjCNFrZvG8Oy3p4_nOQAyihtRTyHZoFg .. Thanks!
by farrah hannah vicentinoi on July 05th, 2012 at 07:43 am
haaits! thank u nkita qo n! :)
by queztron23 on July 07th, 2012 at 02:38 am
read along before posting comment!
yung mga nakikita nyo jan na pictures are just a preview of the file.
mas marami pang available na instruments/equipments pag idinownload yung file..
by stephanie on October 19th, 2012 at 12:23 am
http://chemlab.truman.edu/CHEM100Labs/Common%20apparatus%20and%20procedures.pdf
d2 medio buo
by aiza lim on June 22nd, 2013 at 10:03 pm
badtrip !! wala dito yung hinahanap ko :( hahaayy !!
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Content Preview
COMMON LABORATORY APPARATUS


Beakers are useful as a reaction container or to hold liquid or
solid samples. They are also used to catch liquids from titrations
and filtrates from filtering operations.




Bunsen Burners are sources of heat.








Burets are for addition of a precise volume of liquid. The volume
of liquid added can be determined to the nearest 0.01 mL with
practice.





Clay Triangles are placed on a ring attached to a ring stand as a
support for a funnel, crucible, or evaporating dish.







Droppers
are for addition of liquids drop by drop







Erlenmeyer Flasks
are useful to contain reactions or to

hold liquid samples. They are also useful to catch filtrates.









Glass Funnels are for funneling liquids from one container
to another or for filtering when equipped with filter paper.





Graduated Cylinders
are for measurement of an amount of
liquid. The volume of liquid can be estimated to the nearest
0.1 mL with practice.








Hot Plates
can also be used as sources of heat when an
open flame is not desirable.






Pipets are used to dispense small quantities of liquids.







Ring stand with Rings are for holding pieces of
glassware in place.










Test Tubes are for holding small samples or for containing
ll - scale
reactions.







Test tube holders are for holding test tubes when tubes

should not be touched






Tongs
are similar in function to forceps but are useful for
larger items.





Volumetric Flasks are used to measure precise volumes
of liquid
or to make precise dilutions.
Dilution mark















Wash bottles are used for dispensing small quantities of

distilled water.
















Watch glasses are for holding small samples or for

covering beakers or evaporating dishes.








Wire Gauze on a ring supports beakers to be heated by
Bunsen burners





.





LABORATORY EQUIPMENT





Balances are used to determine the mass of a
reagent or object.







Spectrophotometers
are used to measure the
absorbance or transmittance of a liquid sample.









Fume Hoods
are used to ventilate noxious or harmful
gases.


COMMON LABORATORY TECHNIQUES

Reading a Meniscus



In all volumetric glassware (pipet, buret,
volumetric flasks, graduated cylinder, etc.), it is
46
necessary to read the level of a liquid. A liquid
in a small-diameter container will form a meniscus
46.33
or curve at the surface of the liquid. Usually this
meniscus curves downward to a minimum at the
center. To read the level of the liquid properly,
47
the eye should be at the same level as the bottom
of the meniscus. Sometimes a white card or a white
card with a black mark on it will help a person to
100
see the meniscus clearly. For volumetric flasks
and transfer pipets, the volume of the glassware is
Buret
exact when the bottom of the meniscus is even with
the etched line. In a graduated cylinder or a
buret, the volume is read from the graduations
91.7
etched on the glass. To read the volume correctly,
90
visualize the distance between the tenths of
milliliter marks as divided into ten equal amounts.
Graduated
The volume is then found by reading the number of
tenths of milliliters and estimating hundredths of
Cylinder
milliliters.


Care of Reagents



The reagents used by all of the students can be
contaminated by one careless student. Never put
anything back into the reagent bottle
. A certain
amount of liquid can be obtained in several ways. 1)
Pour from the reagent bottle into a beaker and draw up
6M NaOH
the liquid into a pipet from the beaker. 2) Pour from the
beaker into a graduated cylinder to within 0.1 ml of the
desired amount, adding the last drop with an eyedropper
Copper
Sulfate
filled from a beaker. Only use appropriately labeled
spatulas for each reagent bottle. Pour the solid into a
beaker, onto weighing paper, or into a weigh boat. Never
pour excess back into the bottle. Reagents are to remain on the plastic on the center
bench. This will 1)prevent spills and accidents from occurring at your work area, 2)save
time for everyone because all of the chemicals will be relatively easy to find in a central
location, and 3)make clean-up easier if a spill does occur. When you are finished using
a chemical, replace the lid! A mix-up of lids could also contaminate an expensive
chemical.




Care and Use of Balances










Each of the balances you will be using costs somewhere in the neighborhood of $2000 to
$2500. Therefore, care must be exercised in using them. Below is a simple outline that
will help you to use the balance more effectively, safely, and will assist in reducing the
speed at which the Stockroom Manager’s hair is turning prematurely gray.
1.
Select a suitable container (usually a weigh boat, weigh paper, or glassware) to
weigh the chemical in.
2.
Remove the balance cover.
3.
Place the container on the balance pan and replace the balance cover. Replacing
the balance cover will greatly reduce fluctuations in the balance reading!
4.
Allow the balance reading to stabilize. Zero the balance by pressing the TARE
button or bar which is located at the front of the balance. DO NOT hold down the
tare button/bar! This will cause the balance to change units and you may end up
weighing your chemical in units other then grams which will cause your data to be
in error!
5.
Remove the balance cover and carefully transfer the desired chemical to the
container. If you use a spatula, use only a clean, dry spatula for obtaining dry
chemicals. If you should spill a chemical on the balance pan, use the brush that is
attached to the balance to clean the balance pan IMMEDIATELY! Chemicals left
on the balance pan will corrode the pan.
6.
Replace the balance cover and allow the balance reading to stabilize. In the event
you weigh out too much chemical, remove the excess to a secondary container.
NEVER return a chemical to its original container! There will always be some left
over. Try to find someone else who needs it before disposing of it.
7.
Discard chemicals as directed in each experiment (See the Safety and Disposal
section for each experiment).

8.
Record the balance reading in your notebook.
9.
Remove the container from the balance pan and replace the balance cover.
10.
Replace the appropriate lids on all reagent bottles when finished.



Titration



The titration procedure is accomplished by adding
small amounts of one reactant to a beaker or flask
containing the other until the reaction is completed. In an
acid-base reaction, the reaction is complete when the
amount of acid equals the amount of base. The
experimenter is aware of this condition by the change in pH
that occurs. The change in pH is indicated by a color
change of an indicator or by a pH meter. In other types of
reactions, the completion of the reaction is usually also
indicated by a color change. Titrations are often
accomplished using a buret. A small amount (~ 5 - 10 mL)
of the solution is used to rinse a clean buret. The rinse
solution is discarded. The buret is filled to just below the zero
mark. The liquid level is read and recorded as the initial volume. A
buret has zero at the top as shown in the figure on page 12. Small

amounts of the solution are allowed to flow out of the buret into the
flask by turning the stopcock. Often localized color changes will be evident for a short
period of time. Mixing the solution by swirling the flask will usually cause the color to
return to the original color. As the color lasts longer, the next addition of solution needs
to be smaller. Close to the endpoint (reaction completion), the additions are one drop at
a time. When the endpoint is reached, the liquid level is read and recorded as the final
volume. The volume added is the final volume minus initial volume.

Using A Bunsen Burner


Lighting the Bunsen burner - Make sure the
rubber tubing is connected to the Bunsen
burner and the gas jet. Turn the gas valve
High Temp.
until it is parallel to the gas jet. You should be
Cool Inner Region
able to hear the gas flow. Use a flint striker to
cause a spark and ignite the gas.
Adjusting the Bunsen burner - First, adjust
the height of the flame using the gas valve at
the bottom of the burner. For a clean burning
flame, more air is required than is available
from the gas exhaust. The air vents can be
Air Vents
adjusted to produce an inner blue cone in the
flame with no yellow tip. Too little air produces
Gas
a sooty, orange-yellow tipped flame that is
Valve
To Gas Outlet
quite noisy. Too much air supply may cause
the flame to separate from the burner and
even blow itself out. The ideal working flame
is bluish-green with a light blue cone and it
burns quietly.


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