BUCHI Rotavapo R-215 - Manual (Page 48)

6 Operation
48 R-210/215 Operation Manual, Version F
6 .7 When the distillation “dies out”
When the distillation “dies out”, replace the receiving flask to eliminate the risk of back evapo ration.
Then, continue distillation. Repeat this process until all desired solvent is distilled off.
At the end of the distillation, stop the rotation, pull the flask off and aerate the system.
If you do not intend to immediately perform another distillation, turn off the heating bath and cooling
water supply to save energy and resources.