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Introduction to controlling the vacuum degree of the rotary evaporator Rotary evaporator, also called rotary evaporator, is a commonly used laboratory equipment.
Through electronic control, the flask is rotated at a constant speed at a suitable speed to increase the evaporation area
.
So, do you know how to control the vacuum of the rotary evaporator? Let’s find out with me below
.
The rotary evaporator is composed of vacuum pump and its pipeline, evaporating flask and receiving flask, 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
.
Sealing ring: The key components for sealing between the evaporation tube and the condenser tube, and corrosion resistance is the main performance requirement.
Common materials are PTFE and rubber
.
Among them, the corrosion resistance of PTFE is better than that of rubber
.
The lower the vacuum pump limit, the lower the vacuum value of the system
.
However, the vacuum value that the system can form is determined by the equipment pressure resistance of the rotary evaporator 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
.
At present, the vacuum of the diaphragm vacuum pump is as low as 2 mbar, and the vacuum of the circulating pump is about 50 mbar
.
Vacuum pumps and seals 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
.
The above is the relevant introduction on how to control the vacuum degree of rotary evaporation.
I believe that everyone has a corresponding understanding of this after reading, and I hope it will be helpful to everyone
.
Through electronic control, the flask is rotated at a constant speed at a suitable speed to increase the evaporation area
.
So, do you know how to control the vacuum of the rotary evaporator? Let’s find out with me below
.
The rotary evaporator is composed of vacuum pump and its pipeline, evaporating flask and receiving flask, 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
.
Sealing ring: The key components for sealing between the evaporation tube and the condenser tube, and corrosion resistance is the main performance requirement.
Common materials are PTFE and rubber
.
Among them, the corrosion resistance of PTFE is better than that of rubber
.
The lower the vacuum pump limit, the lower the vacuum value of the system
.
However, the vacuum value that the system can form is determined by the equipment pressure resistance of the rotary evaporator 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
.
At present, the vacuum of the diaphragm vacuum pump is as low as 2 mbar, and the vacuum of the circulating pump is about 50 mbar
.
Vacuum pumps and seals 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
.
The above is the relevant introduction on how to control the vacuum degree of rotary evaporation.
I believe that everyone has a corresponding understanding of this after reading, and I hope it will be helpful to everyone
.
