04-07-04 04:05
No 499447
Hello lads, how are you all?
Swim has the oppurtunity to purchase, you guessed it, a 3 port pyrex manifold, however, this litle black duck has no idea what a 3 port manifold is good for and therefore he is debating whether to purchase it or not. Under $50!
Now he is assuming that this rig IS capable of vacuum pressure, so without knowing its exact specs, is there any way to tell how much pressure it can roughly hold?
Unfortunately, the main question swim has is:
"What does one do with a 3 port vacuum manifold?"
Now for all the guys that went to university, that sounds pretty stupid/lame whatever, however the only chem knowledge swim knows, has been learned from experience and he tells me that it hasn't been a very nice experience..so far!
I'll upload the picture i have below and wait to see what becomes of this post...
I'm a diamond that is tired, of all the faces i've aquired.
(Hive Bee)
04-07-04 08:39
No 499476
Yeah swim saw that too, used to port several vacuum ports on apparatus, or several inert outlets (N2 gas) for inert atmosphere reactions.
Can handle as much vacuum as normal glassware, because thats what it is... as for pressure input, swim would not want to put to much into it due to explosion risk from even small cracks in the glass, if you look further into it the peice is 50cm long, big parcel, big risk of breakage in transport esp with the distance it must travel and the postal service who is carrying it...
(Hive Bee)
04-07-04 12:57
No 499501
Yeh, the postage is a gamble for the exact reasons you have pointed out, so swim is still debating!
Exploding glass sounds rather nasty so swim will be cautious and debate further.
Swim is usually pretty damn careful with everything lab related because he has seen some terrible things.
On the other hand, swim's mate has scored him a tank of argon which he will need to use often, in the future so the extra outlets may save time.
However, he doubts whether the manifold can cope with compressed argon gas. Swim will research, wish him luck!!
I'm a diamond that is tired, of all the faces i've aquired.
(Hive Bee)
04-07-04 14:53
No 499513
better idea for argon (guessing for use as inert atmosphere reactions?) would be pressure lines, like you find at the same place that sells the argon tanks.... think for that they just use normal braided hose, you can buy secure Y adaptors/multi tap adaptors to make the number of required connections, better not to use the glass thing... thats for vacuum.
(Hive Bee)
04-08-04 02:09
No 499601
Hmmm, swims argon cylinder kinda fell of the back of a truck and it doesnt have lines attached. It doesnt even have the pressure regulator attached for some strange reason.
Yes you are correct in your assumption, swim will use argon to form an inert atmosphere, in some of his experiments.
Although, swim is currently being tempted with the prospect of borrowing 45kg NH3 cylinder's, so swim may indeed abandon inert eda/li reductions in preference to textbook birches.
Swim will have to sleep on this one
Thanks for sharing your knowledge AC!
I'm a diamond that is tired, of all the faces i've aquired.
(Hive Bee)
04-08-04 05:51
No 499641
well goto the place people normally get the argon cylinders from and buy a regulator tap and lines, they have all the acc there, just say you have a cylinder you own and broke the damn reg, dunno, maybe you dropped it and it hit the wall?