The basic rules for the correct usage of rotary evaporators
1.The solvent collection flask of the unit should always be emptied prior use to prevent accidentally mixing of incompatible chemicals! Safety first!
2. The flask with the solution is placed on the rotary evaporator. The use of a bump trap prevents the solution from accidentally splashing into the condenser (and being contaminated). It is highly advisable to start with a clean bump bulb in case something bumps over after all! This would allow the experiment to recover the solution or solid.
3. A metal or Kech clip is used to secure the flask and the bump trap. Be sure it is the correct clip for the ground glass joints.
4. The dial on the motor is used for speed control of the flask rotation. A typical “rotavap” uses a variable speed sparkles induction motor that spins at 0-200 rpm and provides high constant torque.
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