Fyndium
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What are reaction flasks used for?
What are the large opening reaction flasks generally best suited for, apart from anything that can be done in a glass flask? Is there some specific
use for them which they suit better than ordinary flasks? The large opening would allow solids to be added much more easily, as cleaning the flask,
and using different types of feeders like inverted funnel to dissolve gases.
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enlight
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They also allow for the use of overhead stirrers, which are typically much more powerful than magnetic stirrers. in most cases, it would be impossible
to insert an overhead stir rod into a normal boiling flask due to the size of the ground glass joint(s).
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Fyndium
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My stir paddles fit through 24* joints like they have been made for it, and freely through 29*. I've been using only overhead stirring for the last
half a year now.
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CharlieA
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If nothing else, they should be easier to clean after using them. 
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pneumatician
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Some say: "explosion proof" so in theorie in an explosion the lid fly away and the flask do not go to your face... but I doubt the builders make test
of this like the car industry with test dummies. read my thread on lids. I end with a conclusion, nobody have no idea about this type of flask, the
lids, etc... so if you find any info or video... about test of this lab piece put here the info.
For charred plant material or salts ending in a very hard stone... with lower volumes you can break the flask every time or throw it away but with 2,
5, 10 liters.. too much money throw it away :-)
some idiot with a lot of money of these making absurd videos exploding everything you can imagine can make a video putting some explosive shit inside
of one of this flask and see what the Hell happend? :-=
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Fyndium
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No glass flask is explosion proof. They all will shatter. The explosion proof reactor vessels are packed in a thick polycarbonate mantle, which
reduces the shrapnel if the device explodes or implodes due to pressure difference. Explosion proof does not mean you can conduct detonation tests in
them.
Only major benefit I see is the ease of charging and removing solid material.
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pneumatician
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I already said that this sounded very suspicious and pompous! :-)
Anyway the explosion wave always search the low resistence point to scape and in a reaction flask is in the contact flask-lid. The clamp have the form
to facilitate this "fly away lid". So put the clamp exerting the least possible force to mantaing the union free of leaks.
on the other hand if the explosion is very great the flask and the heating mantle in pieces fly at your face! :-(
well I never work with explosive things and mixes but always protection is good, so I have in mind to make a shield of 2 or 4 layers of transparent
plastic like a bank cristal bulletproof. if unfortunately someday something happens I think with this shield people are protected in a 90-100%
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