These columns have an accurately fitted Dufton glass spiral which can be removed for cleaning purposes etc. This type of column has proved exceedingly successful in gas analysis.
Socket size
QFC1/12 QFC1/22
19/26 19/26
Vigreux columns
For ease of operation, relative efficiency and throughput, the Vigreux is probably the most practical and commonly used fractionating column. The shape of the indentations, which project towards the centre of the column, ensures intimate contact between the vapour and the liquid adhering to and running from them and has exceptional efficiency for such a simple unit.
Socket size
QFC3/23 24/29
Cone size
24/29
Approx. effective
length, mm 600
Sets of points
12
Cone size
19/26 19/26
Approx. effective length mm
150 300
Approx. overall height mm
270 425
Plain columns Designed for use with the various types of column packing which are available.
Socket size
QFC7/23 QFC7/43
24/29 24/29
Cone size
24/29 24/29
effective overall length mm
250 500
Raschig ring packing for plain columns
Raschig rings are short lengths of glass tubing, usually having the same length as the diameter.
Approx. diameter mm
Raschig rings
QFC8/06 66 QFC8/09 99
Note: The above column packings are supplied in minimum quantities of 1 litre.
Packing support These packing supports will hold the smallest column packing normally used. To fit
