Vacuum column may refer to
* A device used in
vacuum distillation
Vacuum distillation is distillation performed under reduced pressure, which allows the purification of compounds not readily distilled at ambient pressures or simply to save time or energy. This technique separates compounds based on differences i ...
* A feature of a
tape drive
A tape drive is a data storage device that reads and writes data on a magnetic tape. Magnetic tape data storage is typically used for offline, archival data storage. Tape media generally has a favorable unit cost and a long archival stability. ...
that serves as a low-inertia magnetic tape buffer:
9-track tape#Typical operation;
Tape drive#Technical problems
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