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[vsboost]

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Would there be any benefit in having a 4" column bend into a 4" product condenser, what i mean is all the plated/bubbler's I see seem to have a reducer right after the reflux condenser then bend into a smaller gauge pipe.

Is this because of cost or is there some other theory behind the reduced size pipe?

[MacStill]

There's many answers to this, but you can run a smaller tube after the reflux condenser as you're not really taking all the vapour.... when it's important/hearts collection.