Rotary Evaporator

A rotary evaporator (rotovap) is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation. The primary purpose of distillation is separating a particular mixture into components that are based on their respective volatilities via evaporation and condensation.

Features of our rotary evaporators include:

• Capacity: 1L, 2L, 3L, 5L, and 10L to 50L meet the needs of different sample volumes
• Heating bath material: stainless steel or aluminum alloy for durability and stability
• Condenser type: vertical or diagonal for efficient cooling and solvent recovery
• Evaporating flask material: borosilicate glass or GG-17 high borosilicate glass for chemical resistance and transparency
• Rotating speed range: 0-120rpm for precise control of evaporation rate
• Motor power: 40W for smooth and reliable operation
• Temperature range: ambient to 99°C for accurate temperature control
• Vacuum degree: 0.098Mpa for efficient solvent removal

How a Rotary Evaporator Works

• A rotary evaporator works by heating a sample in a flask under vacuum conditions to remove the solvent from the sample. The main components of a rotary evaporator are:
• A motor unit that rotates the evaporation flask or vial containing the user’s sample.
• A vapor duct that is the axis for sample rotation, and is a vacuum-tight conduit for the vapor being drawn off the sample.
• A vacuum system, to substantially reduce the pressure within the evaporator system.
• A heated fluid bath (generally water) to heat the sample.
• A condenser with either a coil passing coolant, or a “cold finger” into which coolant mixtures such as dry ice and acetone are placed.

The process of rotary evaporation involves:

• The sample is placed in a flask and rotated under vacuum conditions.
• The solvent evaporates and is drawn off via the vacuum system.
• The solvent vapor is condensed and collected in a separate flask.