BUCHI Syncor Polyvap - Manual (Page 34)

Syncore ® Accessories
32 version E
Direct concentration
We recommend direct concentration of reaction mixtures
for sensitive reaction products, which are further processed
directly in the same size (without transfer into another
vessel).
If you directly evaporate after a parallel reaction, the follo-
wing procedure is used after the reaction:
• Inert gas supply and discharge is interrupted (for ex-
ample via hose clamps or by using a three-way cock).
• The suitable vacuum is applied, vibrating motion and
heating of rack are started according to the Operating
Instructions of the Syncore Apparatus Line.
If the shaking movement is concluded before the sample
temperature is below the lowest boiling point, the mixture
can start to intensely boil in a boiling delay, which can lead
to a loss of the reaction mixture.
The vacuum conditions are to be adapted to the sample
temperature. Make sure that the samples in the rack cool
slowly after the reaction and that too low vacuum can lead
to boiling delay.
Function,putting into operation, operation and maintenace