in vacuo vs under vacuum

Both "in vacuo" and "under vacuum" are correct phrases, but they are used in different contexts. "In vacuo" is a Latin phrase meaning "in a vacuum" and is commonly used in scientific contexts to describe experiments conducted in a vacuum. On the other hand, "under vacuum" is used to describe the condition of being in a vacuum or the process of creating a vacuum.

Last updated: April 05, 2024 • 1142 views

in vacuo

This phrase is correct and commonly used in scientific contexts to describe experiments conducted in a vacuum.

The phrase "in vacuo" is used to describe experiments or processes that are conducted in a vacuum, where there is an absence of air or other gases.

Examples:

The samples were analyzed in vacuo to prevent contamination.
The experiment was carried out in vacuo to study the behavior of the particles in a vacuum environment.

Show examples from the web [+]

Extraction with solvent, distillation in vacuo. Chromatographyc separation and analysis of a mixture of drugs.
It is available in anhydrous form, and if water has been absorbed it is easy to dry by heating at 100 ºC for two hours in vacuo.
The dried preparation shall be kept in an atmosphere of nitrogen or in vacuo, in a sterile vial, stoppered so as to exclude all micro-organisms and, as far as possible, all humidity.
The method for determining the densities in vacuo of spirits calls for the use of a twin-pan balance, a pycnometer and a tare bottle of the same outside external volume to cancel out the effect of air buoyancy at any given moment.

Alternatives:

in a vacuum
under vacuum conditions
in a vacuum environment
in a vacuum chamber
in a low-pressure environment

under vacuum

This phrase is correct and is used to describe the condition of being in a vacuum or the process of creating a vacuum.

The phrase "under vacuum" is used to describe the state of being in a vacuum or the process of creating a vacuum, such as in vacuum sealing or vacuum distillation.

Examples:

The food was stored under vacuum to prolong its shelf life.
The distillation process was carried out under vacuum to prevent the loss of volatile compounds.

Show examples from the web [+]

This vault is not under vacuum.
Batch operation of pharma & chemical industry (also under vacuum or pressure).
KUV1, the innovative BORELLI group kit for under vacuum closure.
It is very useful to put food sensitive to crushing under vacuum.
Evaporative loss by thermal stress under vacuum.
The PLGA-b-PEG block copolymer is dried under vacuum.
Filter through a filter paper under vacuum.
Evaporate the solvent by distillation on a rotary evaporator at 30 ºC under vacuum.
Filter the solution under vacuum by decantation.
The sample is dried under vacuum.
The polymer solution is extruded and granulated under vacuum to remove residual volatile components.
Created under vacuum, the pure crystalline structure of TAD beryllium is audibly superior to other drivers.
93% of the filtering surface is constantly under vacuum.
This unit operates under vacuum to facilitate the evaporation of some water of the cooling circuit.
This lab allows tests for large scale ACC HX condensing steam under vacuum under a wide range of operating conditions.
If such a reciprocator is designed as a "tube" then it contains a mixture of ordinary kitchen salt with mercury, kept under vacuum.
If the camera is inside the house settled under vacuum, then cold air flowing in from the outside seems on the Wärmebild as blue flag.
Equipment with a warm recovery under vacuum
Description: Novelty tray dedicated to the special cuts, but can be used for any food to be packaged under vacuum.
KENT Ultra Flex Filler 2 is manufactured under vacuum to give an ultra smooth, pore free finish.

Alternatives:

in a vacuum
in a vacuum environment
in a vacuum chamber
in a low-pressure environment
in a controlled atmosphere

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