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Nigel Colebrook

Distilling small volume

Donald Canton  Follow

In order to both achieve sufficient separation and minimize loss during fractional distillation, you want

  • a large inner column surface for optimal contact of the vapour phase (upstream) and the liquid phase (downstream)
  • a rather small inner column volume

Often, these destillation are performed using a Spaltrohr distillation apparatus. Here, the vertical column consists of two concentrical, threaded glas tubes with a gap of 1-2 mm in between.

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