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34:. The raw product (6) is in the bottom of the outer tube (4) which is heated (7) while under vacuum (through side-arm 3). The sublimated material collects (5) on the cold finger proper, cooled by a coolant (blue) circulated through ports 1 and 2.
93:, for example. When used as a condenser in a rotary evaporator, cold fingers can be cooled to a lower temperature of −78 °C (dry ice), compared with water condensers that can be cooled to −40 °C (
54:. The device usually consists of a chamber that a coolant fluid (cold tap water, or perhaps something colder) can enter and leave. Another version involves filling the device with a cold material (examples:
244:
133:. The crude product in the bottom is dark brown; the white purified product on the bottom of the cold finger above is hard to see against the light background.
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97:/water mixture). The lower temperature achieved reduces the quantity of volatile material exhausted into the air.
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that is used to generate a localized cold surface. It is named for its resemblance to a
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205:(10th ed.). United States of America: John Wiley & Sons. pp. 192–194.
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203:
The
Organic Chem Lab Survival Manual: A Student's Guide to Techniques
78:
47:
1468:
1447:
25:
1022:
321:
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1043:
703:
264:
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55:
19:
For the medical condition causing cold fingers, see
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428:
353:
275:
173:
89:can be purchased with a cold finger in place of a
238:
114:A cold finger which includes a vacuum outlet.
8:
1198:Nuclear magnetic resonance (NMR) instrument
73:, or can be used as a compact version of a
1425:
1412:
1401:
1233:
1220:
1053:
1040:
713:
700:
272:
261:
245:
231:
223:
201:Zubrick, James W. (2016). "Sublimation".
176:Laboratory Technique in Organic Chemistry
1563:Instruments used in medical laboratories
1079:Inductively coupled plasma (ICP) device
164:
104:
85:apparatus. Many commercially available
1127:Transmission electron microscope (TEM)
69:Typically a cold finger is used in a
7:
1122:Scanning electron microscope (SEM)
14:
1167:Thermogravimetric analyzer (TGA)
977:Nuclear magnetic resonance (NMR)
138:
119:
107:
1:
62:or a mixture such as dry ice/
1598:
172:Kenneth B. Wiberg (1960).
18:
1560:
1428:
1411:
1400:
1322:Time-domain reflectometer
1232:
1219:
1089:Liquid chromatograph (LC)
1052:
1039:
712:
699:
271:
260:
1157:Melting-point apparatus
538:Cryogenic storage dewar
145:Dark green crystals of
1094:Mass spectrometer (MS)
1084:Gas chromatograph (GC)
35:
1469:Acid-resistant gloves
1150:differential scanning
71:sublimation apparatus
29:
1582:Laboratory glassware
1046:Analytical chemistry
548:Laminar flow cabinet
254:Laboratory equipment
44:laboratory equipment
30:Cold finger used in
16:Laboratory equipment
1418:Personal protective
327:Meker–Fisher burner
1261:Function generator
1244:Bench power supply
1183:Analytical balance
944:Ostwald viscometer
939:Graduated cylinder
678:Inoculation needle
87:rotary evaporators
36:
1569:
1568:
1556:
1555:
1552:
1551:
1529:Fire extinguisher
1519:Biosafety cabinet
1507:
1506:
1396:
1395:
1392:
1391:
1327:Transistor tester
1317:Spectrum analyzer
1215:
1214:
1211:
1210:
1035:
1034:
1031:
1030:
907:Measuring devices
729:Soxhlet extractor
695:
694:
691:
690:
643:Spectrophotometer
638:Pipeclay triangle
390:Mortar and pestle
153:on a cold finger.
91:Dimroth condenser
50:and is a type of
1589:
1426:
1413:
1402:
1307:Network analyzer
1234:
1221:
1054:
1041:
714:
701:
683:Inoculation loop
553:Microtiter plate
493:Test tube holder
385:Magnetic stirrer
273:
262:
247:
240:
233:
224:
217:
216:
198:
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142:
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111:
21:Raynaud syndrome
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1588:
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1586:
1572:
1571:
1570:
1565:
1548:
1544:Solvent cabinet
1503:
1474:Eyewash station
1457:
1422:
1420:equipment (PPE)
1419:
1407:
1388:
1367:
1336:
1280:
1271:Pulse generator
1237:Control devices
1228:
1207:
1171:
1137:Thermochemistry
1131:
1108:
1048:
1027:
996:
953:
919:Conical measure
902:
871:
808:
777:
754:
738:
708:
687:
668:Test tube brush
578:
563:Picotiter plate
526:
512:
508:Lab drying rack
467:Extension clamp
443:
424:
363:
349:
285:
267:
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221:
220:
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200:
199:
195:
188:
180:. McGraw-Hill.
171:
170:
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161:
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143:
134:
124:
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103:
95:ethylene glycol
66:or ice/water).
24:
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5:
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1539:Safety cabinet
1536:
1531:
1526:
1521:
1515:
1513:
1509:
1508:
1505:
1504:
1502:
1501:
1499:Safety goggles
1496:
1494:Safety glasses
1491:
1489:Nitrile gloves
1486:
1484:Medical gloves
1481:
1476:
1471:
1465:
1463:
1459:
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1381:
1379:Alligator clip
1375:
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1355:
1353:Soldering iron
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1309:
1304:
1299:
1297:Logic analyzer
1294:
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1254:Voltage source
1251:
1249:Current source
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1188:Colony counter
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827:Vacuum (Dewar)
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498:Test tube rack
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473:Funnel support
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380:Liquid whistle
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345:Vacuum dry box
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307:Heating mantle
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292:Alcohol burner
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212:978-1118875780
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42:is a piece of
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1453:Safety shower
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1363:Wire stripper
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1193:Spiral plater
1191:
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1057:Compositional
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611:
609:
606:
604:
601:
599:Balance brush
598:
596:
593:
591:
588:
587:
585:
581:
575:Weighing dish
574:
572:Weighing boat
571:
569:
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463:Burette clamp
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297:Bunsen burner
295:
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57:
53:
49:
45:
41:
33:
28:
22:
1524:Fire blanket
1462:Eye and hand
1448:Rubber apron
1312:Oscilloscope
1276:Potentiostat
1203:Plate reader
1099:pH indicator
1069:CHN analyzer
1064:AutoAnalyzer
857:Round-bottom
767:
750:Boston round
613:Filter paper
568:Refrigerator
485:Retort stand
453:Clamp holder
449:Beaker clamp
415:Vortex mixer
410:Stirring rod
405:Static mixer
335:Teclu burner
202:
196:
175:
167:
83:distillation
81:reaction or
68:
39:
37:
1512:Other items
1438:Face shield
1285:Measurement
1266:Galvanostat
1226:Electronics
1176:Other items
1162:Thermometer
1145:Calorimeter
1074:Colorimeter
1018:Gas syringe
1001:Other items
929:Eye dropper
804:Watch glass
789:Evaporating
768:Cold finger
583:Other items
489:Screw clamp
481:Pinch clamp
470:Flask clamp
420:Wash bottle
375:Homogenizer
147:nickelocene
40:cold finger
32:sublimation
1443:Respirator
1384:Test probe
1302:Multimeter
1114:Microscopy
934:Eudiometer
898:Separatory
867:Volumetric
832:Erlenmeyer
760:Condensers
724:Dean–Stark
673:Wire brush
633:Microscope
628:Centrifuge
603:Cork borer
558:Petri dish
533:Agar plate
520:Containers
503:Wire gauze
340:Water bath
302:Desiccator
187:0070700958
159:References
149:, freshly
77:in either
1534:Fume hood
1479:Glove box
1332:Voltmeter
717:Apparatus
706:Glassware
595:Autoclave
590:Aspirator
543:Incubator
477:Iron ring
400:Sonicator
370:Chemostat
312:Hot plate
75:condenser
52:cold trap
1576:Category
1433:Lab coat
1358:Tweezers
1348:Heat gun
1104:pH meter
1013:Bell jar
893:Dropping
847:Florence
837:Fernbach
799:Syracuse
658:Scoopula
608:Crucible
317:Lab oven
151:sublimed
131:sublimed
1372:General
1292:Ammeter
992:Thistle
949:Pipette
924:Cuvette
914:Burette
883:BĂĽchner
876:Funnels
862:Schlenk
842:Fleaker
822:BĂĽchner
743:Bottles
663:Spatula
653:Stopper
623:Forceps
523:Storage
440:Holders
360:Shakers
331:Striker
279:Heaters
266:General
127:Camphor
64:acetone
60:dry ice
1406:Safety
1008:Beaker
987:Thiele
972:Cragie
967:Drying
888:Hirsch
852:Retort
814:Flasks
782:Dishes
773:Liebig
734:Kipp's
648:Splint
458:Tripod
436:Clamps
432:Stands
395:Shaker
357:Mixers
282:Dryers
209:
184:
129:being
79:reflux
48:finger
1341:Tools
959:Tubes
794:Petri
101:Media
1023:Vial
982:Test
618:File
322:Kiln
207:ISBN
182:ISBN
56:ice
1578::
58:,
38:A
246:e
239:t
232:v
215:.
190:.
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