Yes, we used variations on the Laboratory Glass Distillation Flask.
And there was a mantel top and bottom
Pyrex has a low coefficient of thermal conductivity, so the stoppered end got hot, some time burned the stopper a little, but not much.
And there was a mantel top and bottom
Pyrex has a low coefficient of thermal conductivity, so the stoppered end got hot, some time burned the stopper a little, but not much.
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