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What to Consider When Choosing a Vacuum Pump

Jan 23rd 2020

What to Consider When Choosing a Vacuum Pump

Vacuum pumps are utilized in various industries to create a vacuum by removing gas molecules from a sealed volume. There are many different types of vacuum pumps to choose from, such as diaphragm pumps, rotary vane pumps, hybrid pumps, and diffusion pumps. Each type of pump offers different capabilities. To determine what type of vacuum pump is right for your applications, we discuss what to consider when choosing a vacuum pump.

Chemical compatibility

It is essential to determine that the vacuum pump you choose is compatible with the chemicals you’ll use before making a purchase. While some vacuum pumps can accommodate solid particles and highly explosive samples, others exclusively work with liquid and gas samples. Failing to choose a pump that corresponds with the chemicals you will use in it can pose significant safety hazards.

Desired vacuum level

One of the main aspects to consider when choosing a vacuum pump is your desired vacuum level. Different types of vacuum pumps will offer varying vacuum levels. For example, diaphragm vacuum pumps offer ultimate vacuums down to 0.3 mbar, while rotary vane vacuum pumps offer ultimate vacuums down to 2 x 10-3 mbar. Determining your desired vacuum level will help you choose the vacuum pump that is right for you.

Vacuum depth

Greater vacuum depths allow for lower boiling points. When considering what type of vacuum pump to purchase, account for the boiling points of the compounds that you will utilize. If you expect to work with compounds that have high boiling points, it may be advantageous to purchase a vacuum pump with a greater vacuum depth.

The flow rate of the pump

Another important factor to consider when choosing a vacuum pump is the amount of time it takes to drain gases and air. While some vacuum pumps have fast flow rates, others have slow ones. The flow rate directly relates to the draining time of the pump. Typically, pumps with higher flow rates will take less time to drain gases, air, and vapor. Before purchasing a vacuum pump, it is important to evaluate its capacity to produce the required volume flow rate and mass flow rate.

USA Lab Equipment is a leading provider of high-quality lab and extraction instruments. Our wide range of lab equipment includes vacuum distillation kits, pumps, gauges, and ovens as well as glassware, extractors, and rotary evaporators. To provide your lab with all the essential equipment it requires, shop with us today.