Vacuum pump: ultimate buyer’s Guide
When calculating the value of these products in the laboratory, it is important to weigh the upfront cost with the continuous maintenance cost. As one study has shown, the initial price tag can only tell part of the story.
With so many different vacuum pumps, choosing the right vacuum pump for your application may be a challenge.
A variety of factors need to be considered when selecting the appropriate model, including final vacuum depth, free air displacement (flow rate), wet or dry operation (oil or oil free) and chemical resistance.
These are the basic starting points for making a wise decision to buy a decision that suits you.
At present, there are various types of vacuum pumps on the market, including direct drive, rotating blade, diaphragm, scroll and so on.
When choosing a pump, it is important to consider which chemicals you will use and the concentration. This will ensure that you do not choose the wrong product for the task at hand.
According to the application requirements, each type can be used in various applications; this is why it is very important to choose the right model and size for your application for equipment life and system operation.
Quick Comparing Table for Optimum Vacuum Pump
| Product | Title | Details | |
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Liquid Ring Vacuum Pump |
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Rotary Vane Vacuum Pump |
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Roots Vacuum Pump |
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Roots Blowers |
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Dry Scroll Vacuum Pump |
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Six Questions to be Questioned in Purchasing Vacuum Pumps
What kind of vacuum cleaner would you use? Filtration requires a moderate vacuum. Evaporation requires a deeper vacuum. Molecular distillation needs more. Make the pump match the use.
Can you use a dry (oil-free) vacuum pump? Oil-free vacuum pumps can support most laboratory applications. In order to serve the advantage, choose the dry pump as far as possible.
What is the pumping capacity at the expected vacuum level? With the increase of vacuum depth, the actual pumping speed decreases from nominal speed. The drop rate of the pump is different.
Do you use corrosive media? The purchase cost of standard working pumps is low, but the service life of corrosion resistant pumps will be reduced if the corrosion agent is used.
Should you invest in vacuum control? When vacuum conditions need to be maintained, electronic devices can improve repeatability, protect samples and shorten processing time.
What is the lifetime operating cost? Includes procurement costs, maintenance intervals, maintenance costs, pump protection (e.g., filters, cold traps) and employee operating time.
Safety tips
Mechanical vacuum pumps used in laboratories share a common danger. Make sure that the pump has belt cover during operation and that the maintenance line and switch are not defective. Do not put the pump in a closed, non-ventilated cabinet, nor operate the pump near inflammable chemical containers. If your pump uses oil, place a pan under it to catch oil droplets. Used pump oil must be treated as hazardous waste. All vacuum operations are performed after the desktop shield or ventilator, and safety glasses are always worn.
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