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Glassware Catalog
Cold Traps & Vacuum Traps
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Dean-Stark 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
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4mm PTFE stopcock.
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Reservoir Cap. (mL)
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Overall Height (mm)
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Catalog Number
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250
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450
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500
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470
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1,000
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490
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Double-surface cold-trap
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Two-piece vacuum traps
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Threaded S.T. 45/50 joint. 48 o.d. x 420mm L; 13mm o.d. hose barbs. Constructed for easy removal of condensates.
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Description
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Catalog Number
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| A. Hose barbs at 180° |
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| B. Hose barbs at 90° |
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| Replacement bulb for Z17,421-1 and Z17,423-8 |
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| Replacement inside finger for Z17,421-1 |
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| 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
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Description
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Complete
Catalog Number
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Repl. bulb
Catalog Number
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| A. Traps with S.T. 55/50 joint |
| 500mL bulb capacity |
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| 1,000mL bulb capacity |
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| Replacement finger |
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-
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| B. Traps with 50mm O-ring joint |
| 500mL bulb capacity |
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| 1,000mL bulb capacity |
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| Replacement finger |
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| Replacement pinch clamp |
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| Replacement O-rings |
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Cold-traps with ball joint
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7cm i.d., 30cm L. Includes pinch clamp. 75 o.d. x 470mm L; 20mm o.d. side tubes.
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Description
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Catalog Number
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| 65/40 joint |
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| 75/50 joint |
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| Replacement parts |
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| Pinch clamp, for Z12,151-7 |
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| Pinch clamp, for Z12,152-5 |
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| Bulb, for Z12,151-7 |
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| Bulb, for Z12,152-5 |
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| Inside finger, for Z12,151-7 |
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| Inside finger, for Z12,152-5 |
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High-efficiency cold-trap/Dewar
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Dewar approx. 325mm L. Order cold-finger separately, below, to seal in the coolant.
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Desicription
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Catalog Number
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| A. Dewar |
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| B. Cold-fingers, S.T. 45/50 joint |
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| Standard |
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| 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.
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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
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Size
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L (mm)
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I.d. (mm)
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Catalog Number
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| KOH traps |
| Standard |
450
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50
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| Large |
610
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90
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| Cold-traps |
| 500mL bulb |
460
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50
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| 1,000mL bulb |
475
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50
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| Pyrex glass wool |
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| Potassium hydroxide, pellets, 85+%; A.C.S. reagent [1310-58-3] KOH |
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Vacuum traps
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The top inlet tube is available in either a straight version or with a 90° angled bend.
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O.d (mm)
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Overall
H (mm)
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O.d. inlet (mm)
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Inlet, straight
Catalog Number
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Inlet, 90° bend
Catalog Number
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13
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75
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6
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25
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150
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13
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25
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200
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13
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35
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250
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19
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45
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300
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22
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Double-chamber vacuum trap
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97 W x 250mm H. Inlet and outlet have serrated fittings, 14 to 16mm.
Can be used in a 2L Dewar flask.
Z154253 |
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