An air-to-O2ratio of roughly 8:1 results from this. Add the two ratio components together (8 + 1 = 9) and multiply by the total flow rate (9 5 = 45 L/min) to get the overall flow.
How can total flow be calculated?
A venturi mask's entire gas flow should be measured. A ratio is used to represent the amounts of air and oxygen mixed in a venturi to produce a particular oxygen concentration (air:oxgen or a:o). (a x L/min) + (o x L/min) is the formula to calculate the total gas flow from the device.
35% Venturi mask is how many liters?
BLUE = 2-4L/min = 24% oxygen. BLACK = 4-6L/min = 28% O2. 8–10 L/min = 35% O2 for yellow. 40% O2 at 10–12 L/min in the red.
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