April 21, 2019, 07:05:25 AM
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Topic: Substitutes/options for cotton wool?  (Read 468 times)

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Offline gutrending

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Substitutes/options for cotton wool?
« on: February 02, 2019, 05:18:39 PM »
Hullo! I'm working on a lab in chemistry regarding reaction rates, particularly through letting a reaction proceed on a mass balance and letting CO2 escape (I'm working with HCl and CaCO3). However, I've run into a bit of a problem while preparing...which is that I don't have any cotton stoppers. I tried googling for alternatives, but I haven't really come up with anything aside from the fact that most cotton balls sold in stores (at least in the USA); everything else is irrelevant and mostly food-related.

Is there anything I can find at a store that I can use as a stopper that would let gas escape? Would cotton balls (that are definitively made of cotton) be OK to use for this experiment?

Offline billnotgatez

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Re: Substitutes/options for cotton wool?
« Reply #1 on: February 03, 2019, 02:33:17 PM »
...
Is there anything I can find at a store that I can use as a stopper that would let gas escape? Would cotton balls (that are definitively made of cotton) be OK to use for this experiment?

I have seen cotton balls used where a barrier was needed to protect against bacteria but let air through.

Offline gutrending

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Re: Substitutes/options for cotton wool?
« Reply #2 on: February 03, 2019, 04:31:29 PM »
Okay, thank you!

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