jamit
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gas collecting tube
Does anyone know how to use one of these gas collecting tube.
My guess is that it doesn't operate using a displacement of water. What I'm asking is, once you allow gas to enter the tube
through one end, how do you know if the container is full, so that you can shut the other end ...without building pressure and causing a dangerous
implosion?
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paw_20
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I believe that those are sampling tubes, and "full" is a moot point; there just has to be enough to test chemically what gas is in the tube.
Someone correct me if wrong, I don't have firsthand experience with this
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jamit
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thanks paw_20 for your reply. Are you saying that this glassware is not meant for collecting and measuring the volume of gases captured but for
"sampling" some gases to be tested in general? I guess, i must be mistaken about its function. but thanks for your thought.
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paw_20
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Pretty sure. A gas burette is for quantitative measurements.
http://www.chemglass.com/product_view.asp?pnr=CG-1808
this is chemglass' description of a similar piece of glass, but with a sampling port for a septum. I suppose you could use it in conjunction with a
gas burette to store a given quantity of gas.
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