rotary evaporator
Definition of rotary evaporator
(Chem.)
a
device
used in
laboratories
in which a
liquid
is
evaporated
by
reducing
the
pressure
and
applying
heat
, while
rotating
the
liquid
in a
vessel
such as a
round-bottomed
flask
. The
reduced
pressure
speeds
the
evaporation
process
and
allows
the
evaporation
to be
conducted
at
temperatures
lower
than would
otgherwise
be
possible
,
thus
reducing
decomposition
of
unstable
substances
. The
rotation
also
serves
to
increase
the
surface
area
from which
evaporation
takes
place
and to
reduce
the
effect
of "
bumping
", the
sudden
burst
of
vaporization
that can
scatter
liquid
exposed
to
reduced
pressure
.
See also:
Evaporator
Word:
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-rotary evaporator-
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