vmelkon
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Solid glass stopper or empty glass stopper?
Solid glass stopper or empty glass stopper?
Which one is better?
My glassware is 24/40 in size.
I prefer "penny head" stoppers.
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Sulaiman
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I like cheap hollow stoppers
with a flat top that allows me to put it down, with no contamination,
freeing one hand.
Solid glass is heavier so vents at higher pressure,
solid glass stoppers chip and can usually continue service ....
EDIT: also, hollow stoppers have less thermal mass, which makes distillation a little more precise ?
[Edited on 13-11-2016 by Sulaiman]
CAUTION : Hobby Chemist, not Professional or even Amateur
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j_sum1
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I only have hollow stoppers with a flat hexagonal top. I agree that being able to stand them upside down on end is useful.
Somehow the lack of weight feels wrong -- especially when I am washing up and they float.
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RocksInHead
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Solid glass, because if you drop them, there is a littler chance they will break into a million pieces. Also, if they do chip, you (most likely) will
still be able to use them.
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Dr.Bob
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If you are mailing them overseas, then hollow is better, otherwise I use them interchangeably. There are a few times one is better than the other,
but no big deal, I often give people a few of each in kits or purchases, as that way they can use whichever is best. The penny heads are easier to
wire down or hold sometimes with wet hands. I have seen at least 10 shapes and sizes of 24/40 stoppers alone, several varieties of hex top, square
top, round top, and a few others in hollow, and penny top, flat round top, and huge flange to grab hold of and way heavy solid ones.
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Metacelsus
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I would just get whichever kind is cheaper, since they're pretty much functionally equivalent.
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