BÜCHI Labortechnik AG Installation | 5
Operation Manual Rotavapor® R-100 23/60
5.4 Fitting the glass stopcock
Materials required:
Grease Glisseal 40 blue (order number 048197)
u Connect a supply tubing for solvent (2).
u Apply a thin coat of Grease Glisseal 40 blue to the glass stopcock (1).
u Insert glass stopcock into the condenser and turn to the desired position.
The glass stopcock performs various functions depending on its position:
Glass stopcock handle pointing forwards or backwards: the system is sealed. This
is the standard position for distillation.
Glass stopcock handle pointing upwards: system is being vented.
Glass stopcock handle pointing downwards: additional solvent can be fed into the
evaporating flask via a connected feeding tubing.
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