Sciencemadness Discussion Board

Need help with purchasing a still head for my condenser

lewisjay1 - 20-6-2012 at 11:16

Hi guys, I recently brought a used condenser and im not sure what still head to purchase for it, im not sure of the joint size or and measurements of the condenser apart from its length (18 inches), its not ground glass and I was wondering if that was a problem or not? I measured the widest part of the joint and It was 24mm across and I know you can purchase still heads that are 24/40 but I am not sure if this would fit? and I don't really want to have to spend money and then find out that I have bought the wrong sized attachment.
Here is the condenser http://tinyurl.com/bnj4rpy
Sorry if I seem noobish asking these kinds of questions, im knew to this kinda of thing :)
Any help would be greatly appreciated.
Thanks in advance,
Lewis

Rogeryermaw - 20-6-2012 at 11:33

you would have to use bored out rubber or cork stoppers to make sealed attachments.


th_53752_CE_DIKIT2B_122_70lo.jpg - 8kB

Hexavalent - 20-6-2012 at 11:34

Quote: Originally posted by lewisjay1  
I measured the widest part of the joint and It was 24mm across


Is that the internal or external diameter?

lewisjay1 - 20-6-2012 at 11:42

That is the external diameter

Hexavalent - 20-6-2012 at 12:07

Ah, you need the internal diameter to measure up for the possibility of finding a ground glass fitted condenser - but as Roger said, you'd be better off using rubber stoppers or just buying ground glassware to begin with.