Sciencemadness Discussion Board

what is this?

sinai - 23-9-2011 at 04:29

I bought an chemistry collection from the 1940`s and came across the pictured item.

There are around 30 of them and they seem to get smaller in size. I've asked around and no one so far seems to know their purpose. Perhaps someone here knows?

I personally think it may be used for factionating distillations.

IMG_20110923_131052_edit0_edit0.jpg - 73kB IMG_20110923_131114_edit0_edit0.jpg - 57kB

blogfast25 - 23-9-2011 at 04:38

Quote: Originally posted by sinai  
I bought an chemistry collection from the 1940`s and came across the pictured item.

There are around 30 of them and they seem to get smaller in size. I've asked around and no one so far seems to know their purpose. Perhaps someone here knows?

I personally think it may be used for factionating distillations.



What size are they? I don't recall ever seeing anything like them...

sinai - 23-9-2011 at 04:47

Around 7cm height, and 5cm diameter at the widest point. They came with other glassware originating from germany. Though these are not marked, the other glassware'weremarked "Assistent" and "Made in Germany".

blogfast25 - 23-9-2011 at 05:15

They looik like electrical insulators to me but I could be so wrong... :(

sinai - 23-9-2011 at 05:29

Perhaps, though insulators are normally porcelain or ordinary glass, these melt like borosillicate glass. I'm trying to think what I can use them for-?

Panache - 24-9-2011 at 06:23

Column inserts perhaps, I have similar ones although much smaller that fit into a b29 column, do they stack one upon each other?

sinai - 26-9-2011 at 07:05

Yeah they stack up and decrease in neck size.