Buchi Rotavapo R-220 SE User Manual download pdf (Page 21)

4 Description of function

21 R-220 SE Operation Manual, Version F

4 Description of function

This chapter explains the basic working principle of the Rotavapor R-220 SE. It also shows how the

instrument is structured and provides a general functional description of its assemblies.

4.1 Functional principle of a Rotavapor evaporation

The Rotavapor R-220 SE offers efﬁcient, time saving single-stage distillations for small and medium

stage productional applications. The process is based on the evaporation and condensation of

solvents or drying of powders and pasty materials in a rotating evaporating ﬂask .

Standard vacuum applications

Due to its sophisticated seal system a highly stable vacuum level can be reached in combination

with a vacuum controller and a vacuum pump. The vacuum also eliminates unwanted or hazardous

emissions of vapors during the process and serves as an important safety feature. The low pres-

sure decreases the boiling point of the medium inside the Rotavapor. This allows to treat the product

gently at even higher evaporation performance compared to environmental pressure operation.

Special applications

• In combination with the dry ice condenser (conﬁguration ‘C’) distillations at lowest temperatures

can be achieved

• For the oxydation of sensitive products, the processing can take place under inert gas conditions

1 ... 20 21 22 ... 109

No comments

Buchi Rotavapo R-220 SE User Manual Page 21