How to biuld a home CO2 carbonation system (the nozzle part)

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On Tue, 6 Apr 2010 19:28:32 +0000 (UTC), Elmo

Ummm... arithmetic? Weigh the empty tank (or ask the supplier for the empty weight). Weigh the tank with whatever amount of C02 you have left. The difference is how many pounds of C02 you have left.
You can also sorta do it the same way as with a propane tank. Get a liquid crystal thermometer strip and glue it vertically to the side of the tank. Leak a little gas and you should see the warm/cold liquid dividing line. The problem is that the propane tank is quite thin compared to most CO2 tanks, thus making the thicker CO2 tank more difficult to see the dividing line. It also works best with steel tanks, and doesn't work at all with aluminum. < You can also use an IR thermometer to locate the liquid level.
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