[khemikuhlz]

I have found some glassware recently that I'd like to buy buy I'm not sure if I can find other pieces that will fit with it.
The piece is a 3-neck flask.
Right and left joints are 24/40
Center joint is 34/45

I can seem to find and still heads or anything that are the appropriate size for that center joint. 

Bah!

Am I not looking in the right places?

[skyjumper]

http://www.lehmanscientific.com/glasware.html Is that where your getting the flask from? because some quick google searches only gave me that for a link to any glassware of that size/

[hobobot]

I've never used a 34/45. 24/40 is much more useful and common. Ebay has a few things, no heads. But, I did find this adapter:

http://cgi.ebay.com/Pyrex-Laboratory-Reducing-Adapter-34-45-24-40-/300186801191?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item45e4871427

[skyjumper]

http://cgi.ebay.com/Pyrex-Laboratory-Stopper-34-45-/370295844652?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item56375a2f2c

At least a stopper... May be worthwhile

[khemikuhlz]

Dang those are expensive!

I really wish there was a head or 3 way adapter that would fit it!

Man... I kinda wish I didn't bid on it yet. (I'm getting it from an e-bay seller).

gah.. United Nuclear fails at having that stuff.

OR...

Is there any way I could make a good adapter? say... out of glass tubing?

[billnotgatez]

Working with glass is an art

This is a group devoted to it
http://www.asgs-glass.org/

this is a person that has written books on it
see bottom of
Gary Coyne Scientific Glassblower,
http://www.phantomranch.net/folkdanc/teachers/coyne_g.htm

i watched break glass and make a condenser
it was awesome

[cpncoop]

The 34 head is great for charging materials, as solids sometimes lodge in the 24/40 neck.  Also, the 34 size is ideal for an overhead stirrer.  There are many, many adapters available to go from 34 to 24, or just stoppers.  Here's a link to chemglass, where you can buy one if you want:

http://www.chemglass.com/product_view.asp?pnr=CG-1000 (adapter, 30 bucks)

http://www.chemglass.com/product_view.asp?pnr=CG-3000 (stopper, 25 bucks)

The cheapest way out is probably just to buy a rubber plug.  You can get these at any home depot, or certainly at a pool supply store etc....  You can get a pack of 8 from lab safety supply for 11 bucks....

http://www.labsafety.com/Solid-Rubber-Stoppers-Size-8-41mm-Top-dia-33mm-Bottom-dia-Pkg-of-10_s_137307/Stoppers_24550678/?CID=9PP001