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CO2 bubble rate related to flow rate( mL/min)
Maybe my data is better than my memory.
Meter Setting Flow Rate *Time for 100 bubbles Bub. rate
10 3.11 mL/min 127 s 0.787 per sec
40 12.43 52 1.923
60 18.65 32 3.125
*Average of 10 runs.
Cole Parmer Flow Meter P-03266-02 has max flow of 20.2 mL/min for CO2
Meter is gradated 0 to 65
Meter setting: gradation touched by bottom of ball in flow tube.
Regulator pressure 15 psi.
Doubling pressure ~ doubles flow meter reading.
Outlet: 1 meter of 3/16” ID tubing, submerged in 10 cm of water.
Not linear? Extrapolate flow at 1 bubble/sec to be 4.0 mL/min from first
data point, but ~ 6 mL/min for higher flow rate data.
Joe K in Maryland
blooming: Ranuculus ficaria, various corydalis
a few drops o rain