The role of the tabletop rotovap：

Rotary evaporator installation is mainly used for continuous distillation of large quantities of volatile solvents under reduced pressure. In particular, the concentration of the extract and the distillation of the receiving liquid during chromatographic separation can separate and purify the reaction product. The basic principle of the rotary evaporator is vacuum distillation, that is, under reduced pressure, when the solvent is distilled, the distillation flask is continuously rotating.

 

Vacuum degree of tabletop rotovap system:

①The rotovap machine is composed of vacuum pump and its pipeline, evaporating bottle and receiving bottle, condenser tube and other components. Among them, the key factors affecting the degree of vacuum are: the power of the vacuum pump and the airtightness of the system. Among them, the equipment includes: a vacuum pump, a sealing ring and a vacuum tube.
②The lower the vacuum pump limit is, the lower the vacuum value of the system is. However, the vacuum value that the system can form is determined by the equipment pressure resistance of the tabletop rotovap and the avoidance of bumping when ensuring the distillation efficiency. To set a reasonable vacuum value, it is necessary to combine the above two factors and adjust it by the vacuum controller.
③Sealing ring: Connect the key components of the seal between the tabletop rotovap tube and the condenser tube. Wear resistance and corrosion resistance are the main performance requirements. The common materials are PTFE and rubber. Among them, the wear resistance and corrosion resistance of PTFE are better than those of rubber.
④Vacuum pump and sealing ring are consumable parts. During the use of the vacuum pump, its vacuum degree should be tested frequently to ensure the stability of its vacuum degree. As a detachable accessory, the sealing ring can be directly replaced. Silicone tubing is often used in vacuum tubes instead of rubber due to its slow aging efficiency.
 

Heating power of rotary evaporator:

The higher the temperature of the oil bath, the faster the tabletop rotovap rate of the solvent. In the actual distillation process, the distillation efficiency is often not pursued by setting an excessively high reaction temperature. Reasons include:
①If the distillation substance is a heat-sensitive substance, it is easy to decompose and deteriorate at high temperature;
②Excessive temperature will easily lead to high temperature softening of sealing rings and other components, reducing their service life and reducing the airtightness of the system. Usually, the oil bath is heated with a water bath, and the temperature is set below 60°C. The temperature is higher than 80 ℃, and the oil bath is used for heating.
 
Motor speed of rotary evaporator:
The faster the motor rotates, the larger the infiltration area in the evaporation bottle, the larger the heating area, the thicker the formed liquid film thickness, the larger the heat transfer temperature difference, and the higher the distillation efficiency. In actual use, the speed is not as fast as possible. It is mainly due to:
①The faster the rotation speed, the greater the centrifugal force formed, which is easy to cause the bottle to drop;
②The viscosity of the material is different, and there is an investigation of the rotation speed.
 
Cooling system:
For better distillation efficiency, the temperature of the cooling system and the temperature of the heating pot are maintained at a temperature difference of 40°C, so that the formed hot steam can be rapidly condensed and the influence of the steam on the vacuum degree of the system is reduced. The commonly used cooling medium is circulating condensate. If there are substances with a particularly low boiling point, ice-water baths and ice-ethanol baths with circulating freezers as carriers are also common choices.

 

Rotary evaporator application range:

The tabletop rotovap is a device that uses a rotary evaporation bottle to increase the evaporation area and place it in a water bath under reduced pressure while rotating and heating, so that the solution in the bottle is diffused and evaporated. Is the chemical industry, pharmaceutical industry, cafes, bars, scientific research units, etc...
 
From affordable entry-level to high-end performance fully automatic models, IKA's extensive product line has everything you need for a rotary evaporator. The ZZKD rotary evaporator series, consisting of R1020, R1050, and R5002, provide customers with excellent distillation solutions. Not only are they great value for money, but their advanced design and technology make your work easy and comfortable.
 
where can i buy a rotovap?
The new R1050 Rotary Evaporator is both the ideal entry-level device and a true all-rounder for the chemical, pharmaceutical and biotechnological fields, whether in the laboratory or on the factory floor in R&D, production or quality control.
The R5002 is known for being economical and efficient. It is equipped with an easy-to-operate manual lifting device, and integrates a safety lifting function, which automatically lifts when the power is interrupted. R5002 is suitable for all standard evaporation applications. The digital display of rotational speed and heating pot temperature helps the user to optimally control all distillation processes. The equipment is simple and convenient to operate, and can accurately distill the required solvent and obtain accurate distillation results.
The R5002 series rotary evaporator is famous for its excellent performance of high-end products, including: digital temperature display, forward and reverse operation function; smooth start; adjustable drop end point and identification function, which can effectively prevent glass components from breaking.
There are 15 products in the ZZKD rotary evaporator series, and there is always one that can meet your needs.