cmos6667 - 7-5-2015 at 13:04
The reason why you can't separate substances that boil less than 40-50C apart is because the temp/pressure isn't homogenous in the pre-condensation
path, right?
Is there a piece (electronic maybe) which inserts between heated flask and claisen adapter (or vigreux) which contains a thermometer (ntc or ptc) and
solenoid valve, controlled by computer to only open the valve when a given temperature is/isn't reached?
The heating is also computer/microcontroller controlled, using the din 5 connector at the back of the hotplate
Zombie - 7-5-2015 at 16:17
There are PID controllers that have been adapted to operate valves in all sorts of temperature control applications.
For ready made??? you will have to search around. In Lab glass I have only seen custom made bits on Youtube videos.
https://www.youtube.com/watch?v=7wzFx6j6OA8