TOPTION Best Laboratory Rotary Evaporator Factory Price - TOPTION,We have our own team to research, design, produce and sell.Working principle of rotary evaporator is under the vacuum condition, constant temperature heating, evaporation bottle be rotary by constant speed, material forming a large area film at the wall of bottle, efficient evaporation. Solvent vapors through the efficient glass condenser cooling, recycling in the collection bottle, improve the efficiency of evaporation.