Mountain High Cylinder Duration Chart
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How Long Will My Oxygen Last?
Determining how long your oxygen tank will last depends on how high you expect to fly, the size of your oxygen tank, and the delivery mechanism used (e.g., Pulse-Demand™ vs. constant flow). We’ve created a handy chart to help estimate the duration of your oxygen supply. We call it the Cylinder Duration Chart. Find the row for the cylinder size you expect to use in the left-hand column, then move across the row until you reach your altitude and delivery mechanism.