greenyppols
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Raschig Rings
Which would you prefer? Ceramic or Borosilicate glass Raschig rings? For overall use?
I've seen the glass ones on ebay and I was curious of opinions here.
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MadHatter
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Rings
If you're using these in a reflux column, I would go with the glass rings. However, if reflux
is your goal, I found that glass beads from the local arts and craft shops work well and are cheaper.
From opening of NCIS New Orleans - It goes a BOOM ! BOOM ! BOOM ! MUHAHAHAHAHAHAHA !
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greenyppols
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Thanks.
I have 6mm ceramic rings which I found that work fine as boiling stones. I figured more porous the better. When I noticed the glass ones on Ebay,
which look like anyone could make 'em with enough patience, I was just wondering what anyone else thought, 'cause they seemed to cost mucho
$$$ to me.
The rings are currently sometime used in a fractionating column..essential oil distiller...I just snag a few when I need 'em.
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Esplosivo
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For my fractionating column I use the glass pieces of roughly 4x4mm from a broken glass bottle (place in a bag or two, and break it, no extra details
needed  ). It is fairly efficient and surely much cheaper.
If you have the patience (and some skill) you could make some glass rachig rings from glass rods IIRC. Check out the book recently posted on the threa
'books' regarding glass manipulation for laboratory purposes. Hope this helps.
Theory guides, experiment decides.
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unionised
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I'm sure they both work fine. Glass has the advantages that its totally non-porous so you can clean it easily and it's clear so you can see
if it's clean.
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Mahlzahn
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Don`t exist modern resist rings for a
reflux column ?
polyuretane rings  ?
[Edited on 4-5-2005 by Mahlzahn]
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