Factors affecting the rotary evaporator evaporation rate

Rotary evaporator is a widely used evaporation instrument, suitable for reflux operation, rapid evaporation of large amounts of solvents, concentration of trace components and reaction processes requiring stirring, etc. It is developed based on the principle of constant temperature heating and thin film evaporation under vacuum negative pressure conditions.

Four factors that affect the evaporation rate of the vacuum rotary evaporator:

1. The temperature of the water bath:

The solvent in the distillation flask is heated with a heating bath, and the heating temperature can be close to the boiling point of the solvent;

2. The vacuum degree in the rotary evaporator;

3. Whether the condensation recovery unit is efficient:

Under the action of the cooler, the hot steam can be quickly liquefied to accelerate the evaporation rate;

4. The rotation speed of the sample bottle:

The speed is 50 to 160 rpm, so that the solvent forms a thin film and increases the evaporation area.

Rotary distillation evaporator is an essential instrument for evaporation, concentration, crystallization, drying, separation, solvent recovery and other processes in the scientific research and production processes of the pharmaceutical, chemical, biological products and other industries. It is also used in teaching experiments in laboratories.