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QF = V / t

QF = volumetric flow rate in mL per hr

V = volume in mL

t = time in hr

t = 1.5 hr

V = 250 mL

QF = ( 250 mL ) / ( 1.5 hr ) = 167 mL per hr <--------------------

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Q: What is the ml per hour from a 250ml bag dripping for one and a half hours with a drip factor of 12 gtt per ml?
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