Sometimes I have to apply vacuum to all kind of different borosilicate glass equipment like:
round bottom flasks
fractional distillation apparatus
and so on...
While I know that a thick walled round bottom flask will pretty much stand any vacuum my vacuum pump can produce, I am not so sure for something as fragile as a spiral condenser.
Is there a kind of rule of thumb how much mBar thin walled glass equipment like spiral condensers or chromatography columns can stand without risk of implosion?