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turbowagon · 11-30-2006, 07:24 AM

I thought of a situation where these drop checkers could potentially indicate a higher concentration of CO2 than is in the tank, when using a CO2 mist application.

Suppose the mist bubbles accumulate a little pocket of CO2 in the air chamber of the drop checker. If these bubbles are accumulating faster than they can dissolve, there will be an artificially higher concentration of CO2 in that little air pocket than in the rest of the tank. Since the little chamber of water in the drop checker is very small, the CO2 levels will become in equilibrium with the air pocket a lot faster than with the tank.

A way to test this hypothesis would be to surround the drop checker with a shield that prevents the mist bubbles from entering the chamber and seeing if the indicated CO2 level changes.

11-30-2006, 07:24 AM	#117 (permalink)
turbowagon Member Join Date: Jan 2006 Posts: 35 iTrader Ratings: 2 iTrader Positive Rating: 100% Plant Points: 5350	I thought of a situation where these drop checkers could potentially indicate a higher concentration of CO2 than is in the tank, when using a CO2 mist application. Suppose the mist bubbles accumulate a little pocket of CO2 in the air chamber of the drop checker. If these bubbles are accumulating faster than they can dissolve, there will be an artificially higher concentration of CO2 in that little air pocket than in the rest of the tank. Since the little chamber of water in the drop checker is very small, the CO2 levels will become in equilibrium with the air pocket a lot faster than with the tank. A way to test this hypothesis would be to surround the drop checker with a shield that prevents the mist bubbles from entering the chamber and seeing if the indicated CO2 level changes.