The Vespiary

The Hive => Chemicals & Equipment => Topic started by: ShaiGuy on September 24, 2003, 08:22:00 AM

Title: Vaccum distilation/Fine Hair Capillary
Post by: ShaiGuy on September 24, 2003, 08:22:00 AM

When performing a vacuum distillation - is a fine hair capillary necessary? What happens if I perfom the distillation without the capillary?

Title: Stirring
Post by: abolt on September 24, 2003, 08:30:00 AM

A capillary would be used, if you have no stirring capabilities. Otherwise, it is not essential.

Title: rapid stirring or capillary necessary
Post by: Pimpo on September 24, 2003, 08:31:00 PM

I think TFSE has something about this, so I'll just give a short answer. If you don't stir (rapidly!) or use a capillary, the liquid will bump bigtime when it boils. Boiling stones DO NOT work under vacuum!

Title: ... unless the are vacuum boiling stones.
Post by: moo on September 25, 2003, 02:20:00 AM

... unless they are vacuum boiling stones. Such exist.

Title: Glass wool
Post by: murmur on September 25, 2003, 11:45:00 AM

Glass wool can be used instead of capillary or boiling stones. The layer of glass wool must be about 1 cm above than liquid layer in a flask. It gives good results