REFLUX
Dan will show you how to set up a
reaction under refluxing conditions.
Scroll down.
REFLUX STEP #1
Clamp a round
bottom flask to a
ring stand 10-15
cm above bench
height.
Don’t forget a
boiling stone.
REFLUX STEP #2
Support a
heating mantle
of proper size
on a ring, and
fit the mantle
to the flask.
Plug the
mantle into a
Variac with the
switch in the
off position,
and plug the
Variac into the
wall outlet.
REFLUX STEP #3
Lightly
grease the
male
ground
glass joint
of the
condenser.
REFLUX STEP #4
Attach the
condenser
to the flask.
Attach thinwalled
hoses to the
condenser.
REFLUX STEP #5
First turn on the
water faucet
and adjust the
flow to a gentle
stream.
Then connect
the bottom hose
to the faucet.
Be sure the
drain hose is in
the sink!
Now it is okay
to turn on the
Variac.
REFLUX APPARATUS
water out
mantle
plugged
into
Variac
flask
clamped
at a
height
water in
For takedown, see
the next
slide.
REFLUX TAKEDOWN
Remove the
mantle but
keep the water
on and the
condenser in
place until the
solution has
cooled to
lukewarm or
room
temperature.