Bert - 10-1-2015 at 12:50
Been interested in this little item since first seeing the below diagram, maybe 30 years ago.
I've seen jury rigged setups, but never the purpose built apparatus.
Has anyone ever actually SEEN, let alone used one? Or is it one of those great equipment ideas experts have, but never implement?
Can't expect there were ever enough made to be found second hand. When past use, the pieces were likely quite small and widely scattered...
dermolotov - 10-1-2015 at 13:27
Honestly... This just looks way too overcomplicated. I can understand why someone would want if nitrations is a very common practice in their
research. Is that why you have an accumlated interest in this?
A mutual mate of mine is a specialised glass blower in the Northern Toronto area who makes countless supplies like these. It's often asked whether or
not people need these things and it seems that it's not NEEDED but removes one or two steps from simple reactions.
But I have performed countless nitrations using the simple 3 neck flask set ups and simple maths and have never found it too tedious (stressful, yes).
S.C. Wack - 10-1-2015 at 16:28
I don't see why everything can't come through the top of an ordinary sep funnel (with plastic bag melted on, with pump hoses in the bag) held by an
iron (I cover with paper towels) ring clamped on a ringstand, so that's probably what anyone else would have done.
ecos - 12-1-2015 at 02:38
Hi Bert,
I saw this nitrating funnel in BBC documentary video : http://youtu.be/01pjt_K-94M?t=28m2s
unfortunately , I never found it in market 
ecos - 12-1-2015 at 08:55
it seems I am mistaken , it might be 3 neck flask.
the item you have in your figure = 3 neck flask + separation funnel
ecos - 25-7-2015 at 09:46
Hi Bert,
I think this will work :
http://www.sla-scientificglass.com/shop/category.asp?catid=6...
Fulmen - 25-7-2015 at 13:49
Is there really anything in this design that limits it to nitrations? To me it looks like an excellent general purpose reactor that could be ideal for
many reactions.
Dr.Bob - 26-7-2015 at 16:12
There are several variations on the flask with bottom stopcock widely used in pilot plant work and scale ups. I have had a few, but they are very
fragile, which is why most don't use them. The bottom piece is so easy to snap off if the flask is not fixed in a frame, which is why those are
mostly used in a fixed system that protects the flask. I think I might have one jacketed flask with a bottom stopcock, but it is more of a
cylindrical shape. I don't think I have ever seen a jacketed sep. funnel shaped flask, but I have seen a few like the one ocos posted.