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Many commercially available rotary evaporators can be purchased with a cold finger in place of a Dimroth condenser, 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 (ethylene glycol/water mixture ...
A cold finger may be a separate piece of equipment, or may be only a part of a condenser of another type. Cold fingers are also used to condense vapors produced by sublimation in which case the result is a solid that adheres to the finger and must be scraped off, or as a cold-trap, where the liquid or solid condensate is not intended to return ...
A Likens-Nickerson apparatus with a PTFE stopcock and water-jacket condenser in addition to the cold finger condenser. A round-bottom boiling flask with ground glass joints are affixed to either side of the apparatus with Keck clips. The unusually shaped Likens-Nickerson apparatus uses two boiling flasks.
Short-path vacuum distillation apparatus with vertical condenser (cold finger), to minimize the distillation path; 1: Still pot with stirrer bar/anti-bumping granules 2: Cold finger – bent to direct condensate 3: Cooling water out 4: cooling water in 5: Vacuum/gas inlet 6: Distillate flask/distillate.
In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases (hydrogen, oxygen, and nitrogen) into a liquid or solid. [ 2 ] [ needs update ] The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it.
Experts say certain red flags can mean a bigger health issue is at play — for example, episodes of cold hands that are frequent, not easily reversible or are new in those ages 30 years and above ...
A simple short path vacuum distillation apparatus can be used for bulb-to-bulb distillation. 1: Still pot with stirrer bar/anti-bumping granules 2: Cold finger - Condenser with maximum surface to condense most of the vapour. 3: Cooling water outlet 4: cooling water inlet 5: Vacuum Adapter 6: Receiving Flask.
Not least, this was the first Bond film with a sassy opening theme song. "Gold-FING-ah!" Shirley Bassey sang, in her inimitable clenched-jaw style."He's the man, the man with the Midas touch — a ...
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