TRAPS
Dean-Stark Traps •
Cold-Traps & Vacuum Traps
Cold-traps & Vacuum Traps
On this page:
Dry ice condenser-traps • Double-surface cold-trap
• Two-piece vacuum traps
Large capacity cold traps • Cold-traps with ball joint
• High-efficiency cold-trap/Dewar
KOH & cold-trap system •
Vacuum traps •
Double-chamber vacuum trap
Dry ice condenser-traps
 |
4mm PTFE stopcock.
|
Reservoir
Cap. (mL)
|
Overall
Height (mm)
|
Catalog
Number
|
|
250
|
450
|
|
|
500
|
470
|
|
|
1,000
|
490
|
|
|
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Double-surface cold-trap
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Two-piece vacuum traps
 |
Threaded S.T. 45/50 joint. 48 o.d.
x 420mm L; 13mm o.d. hose barbs. Constructed for easy removal of condensates.
|
Description
|
Catalog
Number
|
| A. Hose
barbs at 180° |
|
| B.
Hose barbs at 90° |
|
| Replacement
bulb for Z17,421-1 and Z17,423-8 |
|
| Replacement
inside finger for Z17,421-1 |
|
| Replacement
inside finger for Z17,423-8 |
|
|
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Large capacity cold-traps
With removable cold-fingers and a choice of
S.T. 55/50 joint or 50mm O-ring joint. Traps with O-ring joint include
pinch clamp
|
 |
|
Description
|
Complete
Catalog Number
|
Repl. bulb
Catalog Number
|
| A. Traps with
S.T. 55/50 joint |
| 500mL
bulb capacity |
|
|
| 1,000mL bulb
capacity |
|
|
| Replacement
finger |
|
-
|
| B. Traps with
50mm O-ring joint |
| 500mL bulb capacity |
|
|
| 1,000mL bulb capacity |
|
|
| Replacement
finger |
|
-
|
| Replacement
pinch clamp |
|
-
|
| Replacement
O-rings |
|
-
|
|
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Cold-traps with ball joint
 |
7cm i.d., 30cm L. Includes pinch
clamp. 75 o.d. x 470mm L; 20mm o.d. side tubes.
|
Description
|
Catalog
Number
|
| 65/40 joint |
|
| 75/50
joint |
|
| Replacement
parts |
|
| Pinch
clamp, for Z12,151-7 |
|
| Pinch
clamp, for Z12,152-5 |
|
| Bulb,
for Z12,151-7 |
|
| Bulb,
for Z12,152-5 |
|
| Inside
finger, for Z12,151-7 |
|
| Inside
finger, for Z12,152-5 |
|
|
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High-efficiency cold-trap/Dewar
 |
Dewar approx. 325mm L. Order cold-finger
separately, below, to seal in the coolant.
|
Desicription
|
Catalog
Number
|
| A. Dewar |
|
| B.
Cold-fingers, S.T. 45/50 joint |
|
| Standard |
|
| Strip-silvered
and evacuated |
|
|
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KOH & cold-trap system
Use Aldrich KOH and cold-traps
in tandem to eliminate acidic gases and water vapor, which can damage
expensive vacuum pumps. Traps have a 50mm O-ring joint with pinch clamp.
 |
Features:
KOH traps
- Effective with multiple cold traps
- Flat-bottom design for maximum stability
- Glass wool chamber prevents KOH from entering pump
Cold-trap
- Large capacity
- Removable cold-finger
|
|
|
|
Size
|
L (mm)
|
I.d. (mm)
|
Catalog
Number
|
| KOH traps |
|
|
|
| Standard |
450
|
50
|
|
| Large |
610
|
90
|
|
| |
| Cold-traps |
|
|
|
| 500mL bulb |
460
|
50
|
|
| 1,000mL bulb |
475
|
50
|
|
| |
| Pyrex glass wool |
|
|
|
| Potassium hydroxide,
pellets, 85+%; A.C.S. reagent [1310-58-3] KOH |
|
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Vacuum traps
 |
The top inlet tube is available
in either a straight version or with a 90° angled bend.
|
O.d
(mm)
|
Overall
H (mm)
|
O.d.
inlet (mm)
|
Inlet,
straight
Catalog Number
|
Inlet,
90° bend
Catalog Number
|
|
13
|
75
|
6
|
|
|
|
25
|
150
|
13
|
|
|
|
25
|
200
|
13
|
|
|
|
35
|
250
|
19
|
|
|
|
45
|
300
|
22
|
|
|
|
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Double-chamber vacuum
trap
 |
97 W x 250mm H. Inlet and outlet
have serrated fittings, 14 to 16mm.
Can be used in a 2L Dewar flask.
Z15,425-3 |
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