What Comprises a Complete Rotary Evaporator System?

By Aimee O'Driscoll, 18 April 2018

A rotary evaporation system is a complex set of apparatus. Find out about the separate components involved and the role each plays in the overall setup. We cover the rotary evaporator itself, glassware, chillers, vacuum pumps and controllers, and more.

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Why Vacuum is Important for Rotary Evaporation

By Harmen Zijlstra, 19 September 2017

We explore the importance of having a controllable vacuum source as part of your rotary evaporation system. We discuss the practical and safety benefits of evaporating under vacuum versus using heat alone.

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Choosing the Right Chiller Pump

By Harmen Zijlstra, 27 July 2017

When deciding which chiller pump to use with your rotary evaporation system, internal pressure is an important consideration. We explain the need to factor in the maximum pressure of your pump to help ensure you don't end up with broken glassware.

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How to Minimize Bumping and Foaming

By Harmen Zijlstra, 26 June 2017

Bumping or foaming of a sample can lead to lower yields and contamination of glassware. We explain why bumping and foaming occur and what you can do to prevent or mitigate these issues.

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Keeping Your Cooling Liquid Cool

By Harmen Zijlstra, 19 June 2017

It is important to cool the cooling liquid running through your rotary evaporator's condenser. We explain why this is crucial and what you can do to avoid problems and maintain a safe environment.

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Matching Incompatible Joint Sizes

By Harmen Zijlstra, 02 June 2017

If you're worried that the rotary evaporator you're thinking of buying doesn't fit your existing glassware, you don't need to be. We explain how you can convert one glass size to another and use evaporation flasks with a glass size dissimilar to that of your rotovap's joints.

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Half Full or Half Empty?

By Harmen Zijlstra, 17 May 2017

Over-filling your rotary evaporation flask can cause issues such as spillage and sample loss. We explain why it's important to use the right size flask for your solvent volume and offer tips to help you mitigate the risk of wasting your product.

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To Grease or Not to Grease

By Harmen Zijlstra, 04 May 2017

When using a rotary evaporator, greasing the ground glass joint holding your flask is generally not recommended. We explain why and also discuss situations when it might be beneficial to use grease or an alternative.

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How Scientists Select an Evaporator for Their Laboratories

By Joshua Delos Reyes, 11 April 2017

Knowing what other scientists look out for when buying an evaporator can help you with your own purchasing decision. In this post we reveal which factors others deem most important and explore some of the top-ranked features in a bit more detail.

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Juryrigging a Vacuum Controller

By Carlton Hoyt, 07 May 2016

A vacuum controller can be a very expensive part of your overall setup. To avoid this cost, juryrigging a vacuum controller might be an option. We explain how you can run a system at your desired pressure without having to fork out for a controller.

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Cooling Liquids for Rotary Evaporator Condensers

By Carlton Hoyt, 11 April 2016

The appropriate liquid to use in your coiled condenser will depend on what temperature you are working at. We explore which liquids are suitable for each temperature range and some of the pros and cons of working with each.

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