The Planted Tank Forum - View Single Post - Affordable CO2 sensor?
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Old 12-08-2012, 02:41 PM   #81
UDGags
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Non-porous Teflon lets gas pass through but not liquids. It's used for this application when you bag and autoclave a composite.

The math at the beginning brought me back to Transport Phenomena class from undergrad. We always had to do those stupid gas diffusion problems.
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