Rotary evaporator composition, working principle, , Elbasan

The lower the temperature of the condensed water, the better the effect. The upper end is equipped with a vacuum pump, which is used for vacuum pumping. 3. Before starting the machine, turn the speed control knob to the left, connect the power switch indicator light, and then slowly turn it to the right to the required speed. Use medium and low speed for half of the large evaporation bottle, and use lower speed for the solution with high viscosity. The flask is standard interface No.224, with 500ml and 1000ml flasks attached, and the amount of solution is generally not more than 505. Typically in rotary evaporation applications, the constituent liquid of interest is the study solvent that one wishes to remove from the sample after extraction, for example after a step in natural product isolation or organic synthesis, where the liquid solvent can be removed without undue heating of the often complex and sensitive solvent mixture. Rotary evaporation is commonly and conveniently used to separate "low-boiling" solvents such as n-hexane or ethyl acetate from compounds that are solid at room temperature and pressure. However,cbd crystallization equipment, if there is minimal co-evaporation (azeotropic behavior), and sufficient difference in boiling points at the selected temperature and reduced pressure, careful application also allows the solvent to be removed from the sample containing the liquid compound. Return to Sohu to see more Responsible Editor:. toptiontech.com