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Low form •
Wide-mouth •
Narrow-mouth •
Aldrich high-efficiency cold trap/Dewar
Aldrich NMR-tube Dewar flask
Low form
.gif) |
For use in reactions requiring low temperatures
and magnetic stirring. Shallow design in hemispherical or cylindrical
(semiflat bottom) configurations. Borosilicate glass with protective
outer aluminum housing.
|
Cap.
(mL)
|
I.D.
(cm)
|
Depth
(cm)
|
Catalog
Number
|
Hemispherical |
|
|
|
|
2,100
|
7
|
3
|
|
|
2,150
|
8
|
4
|
|
|
2,275
|
10
|
5.5
|
|
|
2,600
|
14
|
6.5
|
|
Cylindrical |
|
|
|
|
150
|
8
|
3.5
|
|
|
220
|
6.5
|
6.5
|
|
|
350
|
8
|
7.5
|
|
|
550
|
10.5
|
9
|
|
|
850
|
13
|
7.5
|
|
|
2,500
|
17
|
13.5
|
|
|
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Wide-mouth
 |
Borosilicate glass with protective aluminum
or plastic mesh housing and extended aluminum base weighted for stability.
|
Cap.
(mL)
|
I.D.
(cm)
|
Depth
(cm)
|
Catalog
Number
|
A. Aluminum housing |
|
350
|
7.0
|
11.3
|
|
|
665
|
7.0
|
19.5
|
|
|
1,000
|
7.0
|
30.2
|
|
|
1,900
|
12.0
|
19.8
|
|
|
4,300
|
14.3
|
30.0
|
|
B. Plastic mesh housing |
|
350
|
7.0
|
12.5
|
|
|
665
|
7.0
|
19.5
|
|
|
1,000
|
7.0
|
30.2
|
|
|
1,900
|
12.0
|
19.8
|
|
|
4,300
|
14.3
|
30.0
|
|
|
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Narrow-mouth
|
Cap.
(mL)
|
I.D.
(cm)
|
Depth
(cm)
|
Neck
I.D. (cm)
|
Catalog
Number
|
|
A. Aluminum housing, extended
aluminum base
|
|
|
|
440
|
6.1
|
19.5
|
3.3
|
|
|
B. Spherical, extended aluminum
base
|
|
|
|
2,000
|
15.8
|
-
|
3.2
|
|
|
5,000
|
21.6
|
-
|
5.3
|
|
|
C. Dewar caddies
|
|
|
|
for Z12,072-3
|
|
|
|
|
|
for Z12,073-1
|
|
|
|
|
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Aldrich high-efficiency
cold trap/Dewar
 |
Extremely efficient design minimizes warming of
liquid nitrogen or dry ice/acetone coolant that is added through
a side port in the wall of the Dewar and then plugged with a vented
stopper. Dewar approx. 325mm L. Order cold-finger separately, below,
to seal in the coolant.
|
Description
|
Catalog
Number
|
| A. Dewar |
|
| B.
Cold-fingers, S.T. 45/50 joint |
|
B. Standard
|
|
|
B. Silvered
and evacuated
|
|
|
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Aldrich NMR-tube Dewar
flask
Borosilicate
glass with protective aluminum housing is designed for freezing NMR samples
in vacuum-thaw work. Attaches to lattice rack with clamp. Compact size
minimizes volume of liquid nitrogen required. 2.0 i.d. x 23cm D.
Z24,729-4
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