44:
20:
96:, or house vacuum. Preferably this is done through a trap (see below), which is designed to prevent the sucking back of water from the aspirator into the Büchner flask. The purpose of applying a vacuum is to speed the filtration by providing a pressure differential across the filter medium that is greater than that produced by gravity alone.
83:
The short tube and hose barb effectively act as an adapter over which the end of a thick-walled flexible hose (tubing) can be fitted to form a connection to the flask. The other end of the hose can be connected to source of
123:
The Büchner flask can also be used as a vacuum trap in a vacuum line to ensure that no fluids are carried over from the aspirator or vacuum pump (or other vacuum source) to the evacuated apparatus or vice versa.
28:
104:
The thick wall of the Büchner flask provides it the strength to withstand the pressure difference while holding a vacuum inside. It is primarily used together with a
192:
265:
1494:
1473:
1583:
35:
is attached to the flask via a black elastomer adapter. The hose barb is connected via vacuum hose to a vacuum source such as an
1109:
120:. During filtration, the filtrate enters and is held by the flask while the residue remains on the filter paper in the funnel.
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139:, who invented it, despite the mistaken belief held by many people that it's named after
213:
116:
of samples. The Büchner funnel holds the sample isolated from the suction by a layer of
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39:. The flask should be clamped before use or the hose will likely cause it to tip.
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193:"The Origins of the Hirsch and Büchner Vacuum Filtration Funnels"
140:
108:
fitted through a drilled rubber bung or an elastomer adapter (a
43:
872:
85:
19:
1489:
1468:
1043:
342:
63:, filter flask, suction flask, side-arm flask, or
1594:
259:
51:pointing right for attaching a vacuum source.
47:Cross section of a Büchner Flask. Note the
1219:Nuclear magnetic resonance (NMR) instrument
266:
252:
112:) at the neck on top of the flask for the
16:Laboratory glassware: filtration apparatus
75:protruding about an inch from its neck.
1584:Instruments used in medical laboratories
1065:
273:
42:
26:
18:
1100:Inductively coupled plasma (ICP) device
160:
1595:
1148:Transmission electron microscope (TEM)
187:
1425:
1244:
1064:
724:
285:
247:
170:sometimes causes confusion with the
13:
1143:Scanning electron microscope (SEM)
14:
1619:
1188:Thermogravimetric analyzer (TGA)
998:Nuclear magnetic resonance (NMR)
1245:
78:
1:
725:
201:Journal of Chemical Education
180:
132:The flask is named after the
99:
71:with a short glass tube and
7:
286:
10:
1624:
1426:
1581:
1532:
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1449:
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1421:
1392:
1361:
1343:Time-domain reflectometer
1305:
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1156:
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1110:Liquid chromatograph (LC)
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1021:
978:
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153:
1178:Melting-point apparatus
559:Cryogenic storage dewar
127:
1115:Mass spectrometer (MS)
1105:Gas chromatograph (GC)
52:
40:
24:
1490:Acid-resistant gloves
1171:differential scanning
46:
30:
22:
1603:Laboratory glassware
1067:Analytical chemistry
569:Laminar flow cabinet
275:Laboratory equipment
166:The use of the term
67:, is a thick-walled
1608:Air-free techniques
1439:Personal protective
348:Meker–Fisher burner
214:2006JChEd..83.1283J
1282:Function generator
1265:Bench power supply
1204:Analytical balance
965:Ostwald viscometer
960:Graduated cylinder
699:Inoculation needle
222:10.1021/ed083p1283
191:(September 2006).
189:Jensen, William B.
134:industrial chemist
59:, also known as a
53:
41:
25:
1590:
1589:
1577:
1576:
1573:
1572:
1550:Fire extinguisher
1540:Biosafety cabinet
1528:
1527:
1417:
1416:
1413:
1412:
1348:Transistor tester
1338:Spectrum analyzer
1236:
1235:
1232:
1231:
1056:
1055:
1052:
1051:
928:Measuring devices
750:Soxhlet extractor
716:
715:
712:
711:
664:Spectrophotometer
659:Pipeclay triangle
411:Mortar and pestle
1615:
1447:
1446:
1434:
1433:
1423:
1422:
1328:Network analyzer
1255:
1254:
1242:
1241:
1075:
1074:
1062:
1061:
735:
734:
722:
721:
704:Inoculation loop
574:Microtiter plate
514:Test tube holder
406:Magnetic stirrer
294:
293:
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239:
237:
236:
230:
224:. Archived from
197:
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164:
69:Erlenmeyer flask
1623:
1622:
1618:
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1616:
1614:
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1612:
1593:
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1565:Solvent cabinet
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1495:Eyewash station
1478:
1443:
1441:equipment (PPE)
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1409:
1388:
1357:
1301:
1292:Pulse generator
1258:Control devices
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1228:
1192:
1158:Thermochemistry
1152:
1129:
1069:
1048:
1017:
974:
940:Conical measure
923:
892:
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729:
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689:Test tube brush
599:
584:Picotiter plate
547:
533:
529:Lab drying rack
488:Extension clamp
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1560:Safety cabinet
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1520:Safety goggles
1517:
1515:Safety glasses
1512:
1510:Nitrile gloves
1507:
1505:Medical gloves
1502:
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1400:Alligator clip
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1374:Soldering iron
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1318:Logic analyzer
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1275:Voltage source
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1270:Current source
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848:Vacuum (Dewar)
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519:Test tube rack
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494:Funnel support
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401:Liquid whistle
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366:Vacuum dry box
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328:Heating mantle
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313:Alcohol burner
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148:Eduard Buchner
145:Nobel Laureate
129:
126:
106:Büchner funnel
101:
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33:Büchner funnel
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1474:Safety shower
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1384:Wire stripper
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1214:Spiral plater
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1078:Compositional
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627:
625:
622:
620:Balance brush
619:
617:
614:
612:
609:
608:
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602:
596:Weighing dish
595:
593:Weighing boat
592:
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485:
484:Burette clamp
482:
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319:
318:Bunsen burner
316:
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246:
231:on 2007-03-15
227:
223:
219:
215:
211:
207:
203:
202:
194:
190:
186:
185:
173:
172:thermos flask
169:
163:
159:
151:
149:
146:
142:
138:
137:Ernst Büchner
135:
125:
121:
119:
115:
111:
107:
97:
95:
91:
87:
76:
74:
70:
66:
62:
58:
57:Büchner flask
50:
45:
38:
34:
29:
23:Büchner flask
21:
1545:Fire blanket
1483:Eye and hand
1469:Rubber apron
1333:Oscilloscope
1297:Potentiostat
1224:Plate reader
1120:pH indicator
1090:CHN analyzer
1085:AutoAnalyzer
878:Round-bottom
842:
771:Boston round
634:Filter paper
589:Refrigerator
506:Retort stand
474:Clamp holder
470:Beaker clamp
436:Vortex mixer
431:Stirring rod
426:Static mixer
356:Teclu burner
233:. Retrieved
226:the original
205:
199:
168:vacuum flask
167:
162:
131:
122:
118:filter paper
110:Büchner ring
109:
103:
82:
65:Bunsen flask
64:
61:vacuum flask
60:
56:
54:
1533:Other items
1459:Face shield
1306:Measurement
1287:Galvanostat
1247:Electronics
1197:Other items
1183:Thermometer
1166:Calorimeter
1095:Colorimeter
1039:Gas syringe
1022:Other items
950:Eye dropper
825:Watch glass
810:Evaporating
789:Cold finger
604:Other items
510:Screw clamp
502:Pinch clamp
491:Flask clamp
441:Wash bottle
396:Homogenizer
208:(9): 1283.
94:vacuum pump
88:such as an
79:Description
1597:Categories
1464:Respirator
1405:Test probe
1323:Multimeter
1135:Microscopy
955:Eudiometer
919:Separatory
888:Volumetric
853:Erlenmeyer
781:Condensers
745:Dean–Stark
694:Wire brush
654:Microscope
649:Centrifuge
624:Cork borer
579:Petri dish
554:Agar plate
541:Containers
524:Wire gauze
361:Water bath
323:Desiccator
235:2006-09-08
181:References
114:filtration
1555:Fume hood
1500:Glove box
1353:Voltmeter
738:Apparatus
727:Glassware
616:Autoclave
611:Aspirator
564:Incubator
498:Iron ring
421:Sonicator
391:Chemostat
333:Hot plate
100:Operation
90:aspirator
73:hose barb
49:hose barb
37:aspirator
1454:Lab coat
1379:Tweezers
1369:Heat gun
1125:pH meter
1034:Bell jar
914:Dropping
868:Florence
858:Fernbach
820:Syracuse
679:Scoopula
629:Crucible
338:Lab oven
1393:General
1313:Ammeter
1013:Thistle
970:Pipette
945:Cuvette
935:Burette
904:Büchner
897:Funnels
883:Schlenk
863:Fleaker
843:Büchner
764:Bottles
684:Spatula
674:Stopper
644:Forceps
544:Storage
461:Holders
381:Shakers
352:Striker
300:Heaters
287:General
210:Bibcode
141:chemist
1427:Safety
1029:Beaker
1008:Thiele
993:Cragie
988:Drying
909:Hirsch
873:Retort
835:Flasks
803:Dishes
794:Liebig
755:Kipp's
669:Splint
479:Tripod
457:Clamps
453:Stands
416:Shaker
378:Mixers
303:Dryers
86:vacuum
1362:Tools
980:Tubes
815:Petri
229:(PDF)
196:(PDF)
154:Notes
1044:Vial
1003:Test
639:File
343:Kiln
143:and
128:Name
218:doi
1599::
216:.
206:83
204:.
198:.
150:.
92:,
55:A
31:A
267:e
260:t
253:v
238:.
220::
212::
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