89:, who used a variant of them extensively during his research. In the past, there was no equipment to transfer a chemical solution without exposing it to the external environment. The hygiene and purity of chemical compounds is necessary for the expected result of each experiment. The eye dropper, both glass and plastic types, can be sterilized and plugged with a rubber bulb at the open end of the pipette preventing any contamination from the atmosphere. Generally, they are considered cheap enough to be disposable, however, so long as the glass point is not chipped, the eye dropper may be washed and reused indefinitely.
98:
using a dropper, the tip should be carefully examined for cracks. To increase accuracy, the pipette is to be rinsed with the reagent. To use the dropper, the bulb is squeezed to expel air out of the pipette and the tip of the pipette is submerged into the solution vertically. The bulb is slowly released to draw the solution up, making sure that the solution does not overshoot into the bulb or else it may get contaminated. To dispense the reagent, the tip is held against the side of the target container at a 30 to 45 degrees angle.
348:
252:
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147:
324:
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46:
185:. Borosilicate glass is a widely used glass for laboratory apparatus, as it can withstand chemicals and temperatures used in most laboratories. Borosilicate glass is also more economical since the glass can be fabricated easily compared to other types. Soda lime glass, although not as chemically resistant as borosilicate glass, are suitable as a material for inexpensive apparatus such as the Pasteur pipette.
135:
208:. The bulb portion is thinner and therefore "squeezable", while the pipette portion is thick enough to be rigid. They commonly come in 1, 2, 3, and 5 ml which comes with a specific drop size of 10, 20, 25, 35, and 50 ÎĽL. The volumes are usually marked on the stem, though the markings are rather crude and are not particularly accurate.
311:
required high efficiency and precision for drug test and observation of diseases. Pasteur pipettes are commonly used in the medical lab because of its essential accuracy. The design of the
Pasteur pipette allows for high effective performance in the medical lab. It produces a constant volume of drop.
291:
one-half to two-thirds of the way up the inside of the tube. After squeezing the bulb to expel air, a pasteur pipette is inserted into the tube just below the level of the ring of refluxing liquid (into the vapor). The vapor is then drawn into the relatively cold pipette tip, causing it to condense
97:
In laboratory use, droppers should not be used for work involving high accuracy since droppers are not designed to measure specific volume; however, it can be used to add drops of reagents. Each type of dropper is designed to produce a specific drop volume, but this is not highly precise. Before
211:
A plastic dropper is relatively inexpensive and disposable, so they are often used to avoid cross-contamination. In a solution containing cells and/or protein, it reduces the loss of cell and/or protein that binds to glass. Some plastic pipettes include a long flexible tube that can be bent for
259:
The constriction toward the tip of the
Pasteur pipettes may be plugged with a bit of tissue paper or cotton wool to filter off solids from small amounts of liquids. The bulb can be attached and squeezed to help viscous solutions filter more rapidly.
493:
65:, is a device used to transfer small quantities of liquids. They are used in the laboratory and also to dispense small amounts of liquid medicines. A very common use was to dispense
81:
at the top, although many styles of both plastic and glass droppers exist. The combination of the pipette and rubber bulb has also been referred to as a teat pipette. The
727:
231:
cannot be used in plastic
Pasteur pipettes as the solvent can dissolve the plastic.) The pipettes are also hard to wash and are usually discarded with other
686:
238:
Plastic bulb pipettes are generally not precise enough to be used for exact measurements, whereas their glass counterparts can be extremely precise.
786:
2015:
1994:
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651:
571:
2104:
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Heat can be applied to the tip of a plastic
Pasteur pipette to seal the solution and create a liquid-tight storage.
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17:
683:
703:
2123:
1959:
1848:
1189:
772:
444:
1663:
751:
287:. The liquid to be distilled is placed into a small reaction tube along with a boiling chip and heated to
113:
This liquid handling tool, known as the "Pasteur
Pipette," was first discovered by the renowned scientist
547:
272:
1739:
1708:
1620:
470:"Laboratory Glassware Disposal | Laboratory Waste Management | Environmental | Safety Programs | EHRS"
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39:
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The two types of glass that are usually found in the laboratory and in the
Pasteur pipette are
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1169:
881:
525:
264:
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618:
596:
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1247:
1089:
659:
30:
This article is about the laboratory tool. For the digital tool in graphics software, see
8:
1275:
1084:
999:
936:
182:
204:, have their stems and bulbs in the form of a single piece made of soft plastic such as
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220:
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690:
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1920:
1894:
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1039:
921:
886:
848:
833:
572:"How to Choose Pasteur Pipettes, Pasteur Liquid Transfer Pipette, Eye Droppers"
118:
2117:
2025:
1904:
1734:
1403:
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1004:
838:
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where most media are aqueous and solvent resistance is not important. (Most
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1817:
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31:
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843:
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268:
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421:"Pasteur Pipettes (transfer pipettes) – A History of glass to plastic"
263:
With a bit of skill, Pasteur pipettes may also be used for microscale
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911:
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66:
2020:
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after pulling it over a flame, though it may take some practice.
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35:
117:
in the 19th century. He is widely recognized for developing the
101:
Broken pasteur pipettes should be disposed of in an appropriate
1393:
288:
255:
Column chromatography constructed using plastic
Pasteur pipette
224:
2010:
1989:
548:"Pasteur Pipette - Pasteur Pipettes Manufacturer from Mumbai"
312:
This reduces the concern of liquid remaining in the pipette.
134:
1564:
863:
188:
Glass pasteur pipettes can be used to make spotters for
684:
Procedure for
Microscale Flash Column Chromatography
246:
27:
Device used to transfer small quantities of liquids
283:Pasteur pipettes can also be used for microscale
2115:
652:"Helpful Hints on the Use of a Volumetric Pipet"
69:into the eye. The commonly recognized form is a
200:Plastic Pasteur pipettes, also referred to as
780:
295:
121:, and the pipettes were named in his honor.
1740:Nuclear magnetic resonance (NMR) instrument
215:Plastic Pasteur pipettes are often used in
787:
773:
278:
271:, the bulb may be squeezed for microscale
212:drawing solution from small volume tubes.
195:
752:"DISPOSABLE PIPETTES | BENEFITS AND USES"
704:"Microscale Techniques - Complete Manual"
621:Essentials of Clinical Laboratory Science
2105:Instruments used in medical laboratories
1586:
794:
728:"Transfer pipette, polyethylene Z354368"
250:
133:
129:
44:
1621:Inductively coupled plasma (ICP) device
303:
14:
2116:
1669:Transmission electron microscope (TEM)
616:
292:and accumulate inside of the pipette.
1946:
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1585:
1245:
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768:
612:
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315:
141:
34:. For the pipette more broadly, see
24:
1664:Scanning electron microscope (SEM)
607:
85:name is from the French scientist
25:
2135:
680:University of Colorado at Boulder
649:
1709:Thermogravimetric analyzer (TGA)
1519:Nuclear magnetic resonance (NMR)
358:
346:
334:
322:
247:Microscale column chromatography
145:
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720:
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597:"Plastic Serological Pipettes"
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13:
1:
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625:. Cengage Learning. pp.
382:
73:tapered to a narrow point (a
7:
807:
370:
273:flash column chromatography
92:
10:
2140:
1947:
494:"Pasteur Pipette Archives"
267:. With appropriately fine
108:
29:
2102:
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2003:
1970:
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1913:
1882:
1864:Time-domain reflectometer
1826:
1778:
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1677:
1654:
1631:Liquid chromatograph (LC)
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817:
813:
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708:www.chemistry.mcmaster.ca
296:Microscale liquid storage
190:thin layer chromatography
124:
49:Plastic Pasteur pipettes
40:Dropper (disambiguation)
1699:Melting-point apparatus
1080:Cryogenic storage dewar
400:www.merriam-webster.com
396:"Definition of DROPPER"
329:Plastic Pasteur pipette
279:Microscale distillation
196:Plastic Pasteur pipette
1636:Mass spectrometer (MS)
1626:Gas chromatograph (GC)
693:. Accessed 1 Nov 2006.
552:www.ajoshabioteknik.in
445:"Proper Pipette Usage"
256:
139:
138:Glass Pasteur pipettes
119:pasteurization process
50:
38:. For other uses, see
2011:Acid-resistant gloves
1692:differential scanning
617:Ridley, John (2010).
576:Green BioResearch LLC
518:"Physical Properties"
449:Bioscience Technology
265:column chromatography
254:
235:waste after one use.
137:
130:Glass Pasteur pipette
48:
2124:Laboratory glassware
1588:Analytical chemistry
1090:Laminar flow cabinet
796:Laboratory equipment
309:Medical laboratories
304:Medical laboratories
77:) and fitted with a
1960:Personal protective
869:Meker–Fisher burner
103:glassware container
1803:Function generator
1786:Bench power supply
1725:Analytical balance
1486:Ostwald viscometer
1481:Graduated cylinder
1220:Inoculation needle
689:2013-05-24 at the
601:Argos Technologies
528:on 5 December 2017
474:www.ehrs.upenn.edu
353:Pipette glass tube
257:
179:borosilicate glass
157:. You can help by
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51:
2111:
2110:
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2097:
2094:
2093:
2071:Fire extinguisher
2061:Biosafety cabinet
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2048:
1938:
1937:
1934:
1933:
1869:Transistor tester
1859:Spectrum analyzer
1757:
1756:
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1576:
1573:
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1449:Measuring devices
1271:Soxhlet extractor
1237:
1236:
1233:
1232:
1185:Spectrophotometer
1180:Pipeclay triangle
932:Mortar and pestle
365:Pipette container
316:Additional images
202:transfer pipettes
175:
174:
16:(Redirected from
2131:
1968:
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1849:Network analyzer
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1225:Inoculation loop
1095:Microtiter plate
1035:Test tube holder
927:Magnetic stirrer
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658:. Archived from
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524:. Archived from
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2016:Eyewash station
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1962:equipment (PPE)
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1779:Control devices
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1461:Conical measure
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1050:Lab drying rack
1009:Extension clamp
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691:Wayback Machine
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183:soda–lime glass
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155:needs expansion
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83:Pasteur pipette
59:Pasteur pipette
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28:
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18:Pasteur pipette
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2081:Safety cabinet
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2041:Safety goggles
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2036:Safety glasses
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2031:Nitrile gloves
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2026:Medical gloves
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1369:Vacuum (Dewar)
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57:, also called
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1995:Safety shower
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1905:Wire stripper
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1735:Spiral plater
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1599:Compositional
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1141:Balance brush
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1117:Weighing dish
1116:
1114:Weighing boat
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1005:Burette clamp
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839:Bunsen burner
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758:. 6 May 2014.
757:
756:m2scientifics
753:
747:
733:
732:Sigma-Aldrich
729:
723:
709:
705:
699:
692:
688:
685:
681:
676:
662:on 2013-06-30
661:
657:
656:www.csudh.edu
653:
646:
638:
636:9781435448148
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522:www1.udel.edu
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156:
153:This section
151:
148:
144:
143:
136:
122:
120:
116:
115:Louis Pasteur
106:
104:
99:
90:
88:
87:Louis Pasteur
84:
80:
76:
72:
68:
64:
60:
56:
47:
41:
37:
33:
19:
2066:Fire blanket
2004:Eye and hand
1990:Rubber apron
1854:Oscilloscope
1818:Potentiostat
1745:Plate reader
1641:pH indicator
1611:CHN analyzer
1606:AutoAnalyzer
1470:
1399:Round-bottom
1292:Boston round
1155:Filter paper
1110:Refrigerator
1027:Retort stand
995:Clamp holder
991:Beaker clamp
957:Vortex mixer
952:Stirring rod
947:Static mixer
877:Teclu burner
755:
746:
735:. Retrieved
731:
722:
711:. Retrieved
707:
698:
675:
664:. Retrieved
660:the original
655:
645:
620:
600:
591:
580:. Retrieved
578:. 2017-01-02
575:
566:
555:. Retrieved
551:
542:
530:. Retrieved
526:the original
521:
512:
501:. Retrieved
497:
488:
477:. Retrieved
473:
464:
453:. Retrieved
451:. 2003-01-14
448:
439:
428:. Retrieved
424:
415:
403:. Retrieved
399:
390:
341:Pipette bulb
307:
299:
285:distillation
282:
262:
258:
242:Other usages
237:
214:
210:
206:polyethylene
201:
199:
187:
176:
163:
159:adding to it
154:
112:
100:
96:
82:
62:
58:
54:
52:
32:Color picker
2054:Other items
1980:Face shield
1827:Measurement
1808:Galvanostat
1768:Electronics
1718:Other items
1704:Thermometer
1687:Calorimeter
1616:Colorimeter
1560:Gas syringe
1543:Other items
1471:Eye dropper
1346:Watch glass
1331:Evaporating
1310:Cold finger
1125:Other items
1031:Screw clamp
1023:Pinch clamp
1012:Flask clamp
962:Wash bottle
917:Homogenizer
498:Glasscolabs
79:rubber bulb
55:eye dropper
1985:Respirator
1926:Test probe
1844:Multimeter
1656:Microscopy
1476:Eudiometer
1440:Separatory
1409:Volumetric
1374:Erlenmeyer
1302:Condensers
1266:Dean–Stark
1215:Wire brush
1175:Microscope
1170:Centrifuge
1145:Cork borer
1100:Petri dish
1075:Agar plate
1062:Containers
1045:Wire gauze
882:Water bath
844:Desiccator
737:2017-05-30
713:2017-06-13
666:2017-06-13
582:2017-05-30
557:2017-05-30
503:2024-09-04
479:2017-06-06
455:2017-06-06
430:2017-06-22
383:References
269:silica gel
223:, such as
71:glass tube
61:or simply
2076:Fume hood
2021:Glove box
1874:Voltmeter
1259:Apparatus
1248:Glassware
1137:Autoclave
1132:Aspirator
1085:Incubator
1019:Iron ring
942:Sonicator
912:Chemostat
854:Hot plate
233:biohazard
166:June 2017
67:eye drops
2118:Category
1975:Lab coat
1900:Tweezers
1890:Heat gun
1646:pH meter
1555:Bell jar
1435:Dropping
1389:Florence
1379:Fernbach
1341:Syracuse
1200:Scoopula
1150:Crucible
859:Lab oven
687:Archived
532:21 April
425:Pastette
405:21 April
371:See also
93:Overview
1914:General
1834:Ammeter
1534:Thistle
1491:Pipette
1466:Cuvette
1456:Burette
1425:BĂĽchner
1418:Funnels
1404:Schlenk
1384:Fleaker
1364:BĂĽchner
1285:Bottles
1205:Spatula
1195:Stopper
1165:Forceps
1065:Storage
982:Holders
902:Shakers
873:Striker
821:Heaters
808:General
603:. 2017.
377:Pipette
229:acetone
217:biology
109:History
75:pipette
63:dropper
36:Pipette
1948:Safety
1550:Beaker
1529:Thiele
1514:Cragie
1509:Drying
1430:Hirsch
1394:Retort
1356:Flasks
1324:Dishes
1315:Liebig
1276:Kipp's
1190:Splint
1000:Tripod
978:Clamps
974:Stands
937:Shaker
899:Mixers
824:Dryers
633:
289:reflux
225:hexane
1883:Tools
1501:Tubes
1336:Petri
125:Types
1565:Vial
1524:Test
1160:File
864:Kiln
631:ISBN
534:2018
407:2018
227:and
181:and
627:199
161:.
53:An
2120::
754:.
730:.
706:.
682:,
654:.
629:.
609:^
599:.
574:.
550:.
520:.
496:.
472:.
447:.
423:.
398:.
275:.
105:.
788:e
781:t
774:v
740:.
716:.
669:.
639:.
585:.
560:.
536:.
506:.
482:.
458:.
433:.
409:.
168:)
164:(
42:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
