Start Your Reaction Heating; After Reaction - Heidolph DrySyn Multi Mode D'emploi

5. USE A LAB JACK IF AVAILABLE
We strongly advise that you support the hotplate stirrer and DrySyn on a lab jack, this will
offer the ability to lower the DrySyn away from the flask when cooling post synthesis as
well as ensuring in an emergency the reaction flask can be lowered from the heat source.
Lowering the DrySyn down by just 2-3mm during cooling will ensure that in the unlikely
event that an oversize flask (See point 2) has been used it will not jam in the block.
6. ENSURE THAT THE FLASK IS VERTICALY POSITIONED IN THE INSERT
Flasks may not be spherical on the angle. You could increase stress on the flask if it is not
vertically positioned.
7. Add a condenser or other glassware as desired. Solvents and reagents can be
added more easily using a 2-neck flask.
8. Adjust the stirring speed to a suitable level for good mixing.
1. Set the appropriate temperature on the temperature controller (if fitted) or via the
hotplate control.
2. DO NOT SET THE TEMPERATURE TOO HIGH
For low boiling solvents 5-10°C above the bpt is sufficient for reflux. For higher boiling
solvents 10-20°C above the bpt will give good refluxing.
3. Ensure that there is adequate cooling water supply to the condenser to minimise
loss of solvent.
4. IF YOUR OPERATING TEMPERATURE IS ABOVE 150°C WE RECOMMENED
THAT YOU INSULATE THE FLASK WITH ALUMINIUM FOIL
This reduces the thermal gradient across the glass and reduces stress on the flask at high
temperatures. Important note! The maximum recommended temperature of the base for
prolonged operation is 250°C. Exceeding this temperature may reduce the life of the
stirring hotplate.
1. Please make your colleagues aware that the DrySyn could still be hot for some time
after the hotplate has been switched off if you are leaving it unattended.

START YOUR REACTION HEATING

AFTER REACTION

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